National Library of Energy BETA

Sample records for abe 96b cdf

  1. Abe Van Luik

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsicloudden Documentation DataStreamsTotalproposals INITIATEDAbdelhalim AmerAbe Van Luik

  2. ME 227 CE 212 MATH 223 GE 210 CMPT 116 ABE 211CHE 210 GE 213# MATH 224

    E-Print Network [OSTI]

    Saskatchewan, University of

    GE 120 ME 227 CE 212 MATH 223 GE 210 CMPT 116 ABE 211CHE 210 GE 213# MATH 224 ABE 295 ABE 212Elective* Elective* AB E 311 ABE 313 ABE 312 GE 348#ABE 323 co-requisite ABE 327 HSS#@ HSS#@ ABE 324 GE 300# ABE 395 4TH YEAR ABE Elec* ABE Elec* ABE Elec*ABE 422 GE 449# Ag Elec* T.E.* T.E.* ABE Elec* Ag Elec

  3. Identification of FAM96B as a novel prelamin A binding partner

    SciTech Connect (OSTI)

    Xiong, Xing-Dong; Wang, Junwen; Zheng, Huiling; Jing, Xia; Liu, Zhenjie; Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang 524023; Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Dongguan 523808 ; Zhou, Zhongjun; Department of Biochemistry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong ; Liu, Xinguang; Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang 524023; Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Dongguan 523808

    2013-10-11

    Highlights: •We screen the binding protein of prelamin A by yeast two-hybrid screen. •FAM96B colocalizes with prelamin A in HEK-293 cells. •FAM96B physically interacts with prelamin A. -- Abstract: Prelamin A accumulation causes nuclear abnormalities, impairs nuclear functions, and eventually promotes cellular senescence. However, the underlying mechanism of how prelamin A promotes cellular senescence is still poorly understood. Here we carried out a yeast two-hybrid screen using a human skeletal muscle cDNA library to search for prelamin A binding partners, and identified FAM96B as a prelamin A binding partner. The interaction of FAM96B with prelamin A was confirmed by GST pull-down and co-immunoprecipitation experiments. Furthermore, co-localization experiments by fluorescent confocal microscopy revealed that FAM96B colocalized with prelamin A in HEK-293 cells. Taken together, our data demonstrated the physical interaction between FAM96B and prelamin A, which may provide some clues to the mechanisms of prelamin A in premature aging.

  4. CDF THERORY SOFTWARE

    Energy Science and Technology Software Center (OSTI)

    003883WKSTN00 cDF Theory Software for mesoscopic modeling of equilibrium and transport phenomena  store.pnnl.gov 

  5. Bibliography [1] E. Abe, Hopf algebras. Cambridge University Press, 1980.

    E-Print Network [OSTI]

    Ruzhansky, Michael

    Bibliography [1] E. Abe, Hopf algebras. Cambridge University Press, 1980. [2] M. Abramowitz and I. An introduction. Springer- Verlag, 1976. [15] G. Boole, Finite differences. 4th edition, Library of Congress

  6. Electroweak results from CDF

    SciTech Connect (OSTI)

    D. S. Waters

    2004-06-02

    Inclusive W and Z production cross-sections have been measured by CDF and certain electroweak parameters extracted with high precision from these measurements. New results on diboson production at the Tevatron are also presented.

  7. Policy-Based Non-interactive Outsourcing of Computation using multikey FHE and CP-ABE

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Policy-Based Non-interactive Outsourcing of Computation using multikey FHE and CP-ABE Michael Clear.McGoldrick}@scss.tcd.ie Keywords: Non-interactive computing delegation, multikey FHE, CP-ABE, homomorphic encryption, access policy Encryption (CP-ABE) and Identity Based Encryption (IBE). We introduce a new primitive that captures

  8. New Physics at CDF

    E-Print Network [OSTI]

    Melisa Rossi

    2010-06-06

    We present the current status of searches for physics beyond the Standard Model at the Tevatron 1.96-TeV proton-antiproton collider using data collected with the CDF experiment. We cover searches for supersymmetry, extra dimensions and new gauge bosons.

  9. Top physics at CDF

    SciTech Connect (OSTI)

    Julia Thom

    2004-06-24

    Precision studies of top quark properties are a primary goal of the Run II physics program at the Fermilab Tevatron. Marking the first stages of this program, the CDF collaboration presents recent results on top pair production cross section, single top physics and top mass, using between 109 and 200 pb{sup -1} of Run II data.

  10. Pipelineable On-Line Encryption Farzaneh Abed1

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Pipelineable On-Line Encryption Farzaneh Abed1 , Scott Fluhrer2 , Christian Forler1, Eik List1 chosen-ciphertext attacks with pipelineability to support efficient implementations. POE combines a block POET, a provably secure on-line AE scheme, which inherits pipelineability and chosen

  11. Where's Abe? Corresponding MATLAB script is lincoln2.m

    E-Print Network [OSTI]

    Born, Richard

    Where's Abe? Corresponding MATLAB script is lincoln2.m See: pp. 54-79 of David Marr's monograph. What is going on here? In 1980, David Marr and Ellen Hildreth wrote a very important paper in whichG" or "Laplacian of Gaussian" filter. Marr went on to argue in his monograph that one important function of early

  12. The CDF Central Analysis Farm

    SciTech Connect (OSTI)

    Kim, T.H.; Neubauer, M.; Sfiligoi, I.; Weems, L.; Wurthwein, F.; /UC, San Diego

    2004-01-01

    With Run II of the Fermilab Tevatron well underway, many computing challenges inherent to analyzing large volumes of data produced in particle physics research need to be met. We present the computing model within CDF designed to address the physics needs of the collaboration. Particular emphasis is placed on current development of a large O(1000) processor PC cluster at Fermilab serving as the Central Analysis Farm for CDF. Future plans leading toward distributed computing and GRID within CDF are also discussed.

  13. Top Physics at CDF

    SciTech Connect (OSTI)

    Moon, Chang-Seong

    2011-06-01

    We present the recent results of top-quark physics using up to 6 fb{sup -1} of p{bar p} collisions at a center of mass energy of {radical}s = 1.96 TeV analyzed by the CDF collaboration. Thanks to this large data sample, precision top quark measurements are now a reality at the Tevatron. Further, several new physics signals could appear in this large dataset. We will present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

  14. Top Physics at CDF

    E-Print Network [OSTI]

    Chang-Seong Moon

    2011-07-01

    We present the recent results of top-quark physics using up to 6 fb$^{-1}$ of $p \\bar p$ collisions at a center of mass energy of $\\sqrt s$ = 1.96 TeV analyzed by the CDF collaboration. Thanks to this large data sample, precision top quark measurements are now a reality at the Tevatron. Further, several new physics signals could appear in this large dataset. We will present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

  15. Fermilab | Tevatron | Experiments | CDF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article) | SciTechSubmitted More OftenFrontierScience2011 CDF

  16. NetCDF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications TheScience4.21 4.43EnergyAuthor: MonthlyNetCDF

  17. CDF Search for the Higgs at Fermilab

    SciTech Connect (OSTI)

    Barbara Alvarez

    2009-03-10

    Fermilab CDF experiment representative Barbara Alvarez explains the experiment and the search for the Higgs Boson

  18. CDF Search for the Higgs at Fermilab

    ScienceCinema (OSTI)

    Barbara Alvarez

    2010-01-08

    Fermilab CDF experiment representative Barbara Alvarez explains the experiment and the search for the Higgs Boson

  19. Top physics at CDF

    SciTech Connect (OSTI)

    Hughes, R.E. [Univ. of Rochester, NY (United States)

    1997-01-01

    We report on top physics results using a 100 pb{sup -1} data sample of p{bar p} collisions at {radical}s = 1.8 TeV collected with the Collider Detector at Fermilab (CDF). We have identified top signals in a variety of decay channels, and used these channels to extract a measurement of the top mass and production cross section. A subset of the data (67 pb{sup -1}) is used to determine M{sub top} = 176 {+-} 8(stat) {+-} 10(syst) and {sigma}(tt) = 7.6 {sub -2.0}{sup +2.4} pb. We present studies of the kinematics of t{bar t} events and extract the first direct measurement of V{sub tb}. Finally, we indicate prospects for future study of top physics at the Tevatron.

  20. Two novel applications of bilinear groups to ABE Riccardo Longo riccardolongomath@gmail.com

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    coordination. A party can simply act as an ABE authority by creating its own public parameters and issuing, enhancing the efficiency of encryption and decryption. We prove our systems secure under algebraic version of ABE was invented by Sahai and Waters [SW05] in 2005. Immediately af- terwards, Goyal, Pandey

  1. ME 227 CE 212 MATH 223 GE 210 CMPT 116 ABE 211CHE 210 GE 213# MATH 224

    E-Print Network [OSTI]

    Saskatchewan, University of

    GE 120 ME 227 CE 212 MATH 223 GE 210 CMPT 116 ABE 211CHE 210 GE 213# MATH 224 ABE 295 ABE 212 can be taken in either term. GE 124 MATH 110 MATH 124CHEM 115 PHYS 155 3RD YEAR GE 125 GE 110 COMM 102

  2. Blackbox Traceable CP-ABE: How to Catch People Leaking Their Keys by Selling Decryption Devices on eBay

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Blackbox Traceable CP-ABE: How to Catch People Leaking Their Keys by Selling Decryption Devices@cityu.edu.hk Abstract. In the context of Ciphertext-Policy Attribute-Based Encryption (CP-ABE), if a decryption device with policies satisfied by SD, no one including the CP-ABE authorities can identify the malicious user(s) who

  3. The CDF silicon vertex trigger

    SciTech Connect (OSTI)

    B. Ashmanskas; A. Barchiesi; A. Bardi

    2003-06-23

    The CDF experiment's Silicon Vertex Trigger is a system of 150 custom 9U VME boards that reconstructs axial tracks in the CDF silicon strip detector in a 15 {mu}sec pipeline. SVT's 35 {mu}m impact parameter resolution enables CDF's Level 2 trigger to distinguish primary and secondary particles, and hence to collect large samples of hadronic bottom and charm decays. We review some of SVT's key design features. Speed is achieved with custom VLSI pattern recognition, linearized track fitting, pipelining, and parallel processing. Testing and reliability are aided by built-in logic state analysis and test-data sourcing at each board's input and output, a common inter-board data link, and a universal ''Merger'' board for data fan-in/fan-out. Speed and adaptability are enhanced by use of modern FPGAs.

  4. Higgs Bosons Searches at CDF

    SciTech Connect (OSTI)

    Cuenca Almenar, Cristobal [University of California Irvine, CA 92697 (United States)

    2010-02-10

    Advanced analysis techniques together with increasing data samples are bringing the sensitivity of CDF to the Higgs boson very close to the SM predictions. These improvements translate into more stringent exclusions of parameter space in BSM Higgs sectors and of the SM mass range. The CDF Collaboration has a very active program on Higgs searches that comprises most accessible production mechanisms and decay channels in pp-bar collisions at sq root(s) = 1.96 TeV. This contribution will also review the combination of the different channels, data samples and analysis techniques that currently produces one of the most exciting experimental results in our field.

  5. Latest Electroweak Results from CDF

    SciTech Connect (OSTI)

    Lancaster, Mark

    2010-05-01

    The latest results in electroweak physics from proton anti-proton collisions at the Fermilab Tevatron recorded by the CDF detector are presented. The results provide constraints on parton distribution functions, the mass of the Higgs boson and beyond the Standard Model physics.

  6. Top physics results at CDF

    SciTech Connect (OSTI)

    Vickey, Trevor; /Illinois U., Urbana

    2005-05-01

    The most recent results on top quark physics at CDF are reported. Measurements of cross-section and mass are presented, and the status of single top quark production searches are discussed. The results obtained from probing various top quark properties are also presented.

  7. Jet Physics at CDF Sally Seidel 1 for the CDF Collaboration

    E-Print Network [OSTI]

    Seidel, Sally

    Jet Physics at CDF Sally Seidel 1 for the CDF Collaboration Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA seidel@phys.unm.edu 1 Jets at CDF Jets have been studied. Unless otherwise indicated below, the jets were reconstructed us- ing a cone algorithm [2] with cone

  8. Collider Detector at Fermilab (CDF): Data from Supersymmetry, New Phenomena Research of the CDF Exotics Group

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The Exotics group searches for Supersymmetry and other New Phenomena. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  9. Top quark physics at CDF

    E-Print Network [OSTI]

    Karolos Potamianos

    2011-12-01

    We present the recent results of top-quark physics using up to 6 fb$^{-1}$ of $p\\bar{p}$ collisions analyzed by the CDF collaboration. The large number of top quark events analyzed, of the order of several thousands, allows stringent checks of the standard model predictions. Also, the top quark is widely believed to be a window to new physics. We present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

  10. Heavy quark production at CDF

    SciTech Connect (OSTI)

    M. Bishai

    2002-12-13

    Heavy quark production cross-sections, correlations and polarizations have been measured at the Collider Detector at Fermilab (CDF) using 118 pb{sup -1} of data collected from the 1992 to 1995 Run I of the Fermilab Tevatron. There is still disagreement between theoretical predictions of bottom and charm hadro-production cross-sections and the Run I results. The observed transverse momentum spectrum of the prompt J/{psi} production polarization is still not understood. Run II of the Tevatron began in July of 2001 and the CDF Run II detector [11] has collected 70 pb{sup -1} of physics quality data since January 2002. Large statistics of onia states have been collected. Exclusive B meson decay modes have been reconstructed and the SVT level 2 displaced track trigger has produced large samples of D mesons. The prompt charm and b {yields} cX fractions in both charmonium and D meson samples have been measured. Run II is now poised to greatly enhance the knowledge of heavy quark production dynamics well beyond the reach of the Run I detector.

  11. A transmission electron microscopy study of presolar spinel Thomas J. Zega a,b,e,

    E-Print Network [OSTI]

    Nittler, Larry R.

    A transmission electron microscopy study of presolar spinel Thomas J. Zega a,b,e, , Larry R of Washington, 5241 Broad Branch Rd NW, Washington, DC 20015, United States d Laboratory for Space Sciences, 4555 Overlook Ave. SW, Washington, DC 20375, United States Received 6 November 2012; accepted

  12. DNA Damage by Fasicularin Sanjay Dutta, Hideki Abe, Sakae Aoyagi, Chihiro Kibayashi, and Kent S. Gates*,

    E-Print Network [OSTI]

    Gates, Kent. S.

    DNA Damage by Fasicularin Sanjay Dutta, Hideki Abe, Sakae Aoyagi, Chihiro Kibayashi, and Kent S that a DNA repair- deficient cell line is hypersensitive to fasicularin suggest that an ability to damage DNA of DNA damage. For example, oxidatiVe damage at guanine residues can also generate base-labile lesions.13

  13. AusgAbe 04 | 2010 Am 8. November war es so-

    E-Print Network [OSTI]

    Schiller, Stephan

    AusgAbe 04 | 2010 Am 8. November war es so- weit: Nach eineinhalb Jahren Vorbereitungs- und Program- senz der HHu erwartet wurde. Ziel des 2009 angelaufenen Projektes war es, der Hein- rich Grafiksammlung ,,Mensch und Tod" zu sehen. Informationen auf seite 10 Oeconomicum: Am 30. November war einweihung

  14. ABE@IllinoisAgricultural and Biological Engineering Alumni Newsletter. Spring 2009 Rausch Travels to Brazil with

    E-Print Network [OSTI]

    Lee, Tonghun

    Rausch Travels to Brazil with ACES Academy for Global Engagement Kent Rausch, Ph.D. '93 AgE, an associate, an overarching theme in the College has been biofuels," said Rausch. "So our class chose to go to Brazil, since of Rausch Travels to Brazil ...Continued http://abe.illinois.edu Page 2 Mato Grosso. "Mato Grosso could

  15. Top physics results from CDF

    SciTech Connect (OSTI)

    Gomez, Gervasio; /Cantabria Inst. of Phys.

    2005-05-01

    The top quark is by far the most massive fundamental particle observed so far, and the study of its properties is interesting for several reasons ranging from its possible special role in electroweak symmetry breaking to its sensitivity to physics beyond the Standard Model. They present recent top physics results from CDF based on 160-320 pb{sup -1} of p{bar p} collision data at {radical}s = 1.96 TeV. The t{bar t} cross section and the top mass have been measured in different decay channels and using different methods. they have searched for evidence of single top production, setting upper limits on its production rate. Other results shown in this conference include studies of the polarization of W bosons from top decays, a search for charged Higgs decaying from top, and a search for additional heavy t' quarks.

  16. CDF/PUB/JET/PUBLIC/8548 STUDYING THE UNDERLYING EVENT AT CDF

    E-Print Network [OSTI]

    Field, Richard

    CDF/PUB/JET/PUBLIC/8548 STUDYING THE UNDERLYING EVENT AT CDF R. D. FIELD*1 Department of Physics (with multiple parton interactions) and they are extrapolated to the LHC. Keywords: QCD, Jets, Hadron outgoing partons (i.e. the initial two "jets") plus the particles that arise from initial and final state

  17. CDF/PUB/JET/PUBLIC/7728 Page 1 of 6

    E-Print Network [OSTI]

    Field, Richard

    CDF/PUB/JET/PUBLIC/7728 Page 1 of 6 JET PHYSICS IN RUN 2 AT CDF Rick Field1 (for the CDF Run 2 results on the inclusive jet cross section (KT algorithm) and the b-jet cross section (Mid the direction of the leading jet to isolate regions of - space that are very sensitive to the "beam

  18. CDF/PUB/JET/ PUBLIC/10199 June 19, 2011

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/JET/ PUBLIC/10199 June 19, 2011 Version 2.3 The Substructure of High Transverse Momentum Jets Observed by CDF II CDF II Collaboration Abstract We present the results of a study of jets with transverse momentum (pT ) greater than 400 GeV/c with particular emphasis given to the mass of the jets

  19. Level-2 Calorimeter Trigger Upgrade at CDF

    SciTech Connect (OSTI)

    Flanagan, G.U.; /Purdue U.

    2007-04-01

    The CDF Run II Level-2 calorimeter trigger is implemented in hardware and is based on an algorithm used in Run I. This system insured good performance at low luminosity obtained during the Tevatron Run II. However, as the Tevatron instantaneous luminosity increases, the limitations of the current system due to the algorithm start to become clear. In this paper, we will present an upgrade of the Level-2 calorimeter trigger system at CDF. The upgrade is based on the Pulsar board, a general purpose VME board developed at CDF and used for upgrading both the Level-2 tracking and the Level-2 global decision crate. This paper will describe the design, hardware and software implementation, as well as the advantages of this approach over the existing system.

  20. CDF/PHYS/TOP/PUBLIC/10776 Search for top+jet resonances in tt+jet(s) at CDF.

    E-Print Network [OSTI]

    Quigg, Chris

    CDF CDF/PHYS/TOP/PUBLIC/10776 Search for top+jet resonances in t¯t+jet(s) at CDF. The CDF to a resonance in the ¯t/t+jet system of t¯t+extra jet events. We use events with exactly one lepton, missing transverse energy and at least five jets in data with an integrated luminosity of 8.7 fb-1 . We find the data

  1. Top Quark Physics at the CDF Experiment

    E-Print Network [OSTI]

    Bernd Stelzer; for the CDF Collaboration

    2010-07-21

    Fermilab's Tevatron accelerator is recently performing at record luminosities that enables a program systematically addressing the physics of top quarks. The CDF collaboration has analyzed up to 5/fb of proton anti-proton collisions from the Tevatron at a center of mass energy of 1.96 TeV. The large datasets available allow to push top quark measurements to higher and higher precision and have lead to the recent observation of electroweak single top quark production at the Tevatron. This article reviews recent results on top quark physics from the CDF experiment.

  2. CDF/ANAL/EXOTIC/PUBLIC//11103 Tests of the Spin and Parity of the Higgs Boson with CDF

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/ANAL/EXOTIC/PUBLIC//11103 Tests of the Spin and Parity of the Higgs Boson with CDF The CDF and parity of the Higgs boson using dedicated searches for two specific non-standard Higgs boson hypotheses: a pseudoscalar Higgs boson with JP = 0- and a graviton-like Higgs boson, with JP = 2+, both assuming a boson mass

  3. Collider Detector at Fermilab (CDF): Data from B Hadrons Research

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group is organized into six working groups, each with a specific focus. The Bottom group studies the production and decay of B hadrons. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  4. Top quark measurement in the CDF

    E-Print Network [OSTI]

    Hyun Su Lee; for the CDF Collaboration

    2009-05-28

    We present recent top physics results in the CDF including updates of top mass, \\ttbar cross section, single top search, forward-backward asymmetry, and the differential cross section of \\ttbar. Most of measurements utilize close to the integrated luminosity of 3 fb$^{-1}$.

  5. Heavy flavor physics at CDF II

    SciTech Connect (OSTI)

    A. Cerri

    2001-07-12

    Tevatron experiments will soon begin Run II data taking with an aggressive B physics program. The B physics reach of the CDF and D0 experiments already seems competitive and complementary to that of B factories. We report on the future plans for B physics and CP violation measurements at the Tevatron.

  6. CP and charge asymmetries at CDF

    SciTech Connect (OSTI)

    Morello, Michael; /Pisa U. /INFN, Pisa

    2007-11-01

    We present CDF results on the branching fractions and time-integrated direct CP asymmetries for B0 and B0s decay modes into pairs of charmless charged hadrons (pions or kaons). We report also the first observation of B0s->DsK mode and the measurement of its branching fraction.

  7. Top quark mass measurements at CDF

    SciTech Connect (OSTI)

    Brubaker, Erik; /Chicago U., EFI

    2006-05-01

    The mass of the top quark M{sub top} is interesting both as a fundamental parameter of the standard model and as an important input to precision electroweak tests. The Collider Detector at Fermilab (CDF) has a robust program of top quark mass analyses, including the most precise single measurement, M{sub top} = 173.4 {+-} 2.8 GeV/c{sup 2}, using 680 pb{sup -1} of p{bar p} collision data. A combination of current results from CDF gives M{sub top} = 172.0 {+-} 2.7 GeV/c{sup 2}, surpassing the stated goal of 3 GeV/c{sup 2} precision using 2 fb{sup -1} of data. Finally, a combination with current D0 results gives a world average top quark mass of 172.5 {+-} 2.3 GeV/c{sup 2}.

  8. Vista at CDF: Results of a model-independent search for new physics...

    Office of Scientific and Technical Information (OSTI)

    Vista at CDF: Results of a model-independent search for new physics in 927 pb**-1 at CDF Citation Details In-Document Search Title: Vista at CDF: Results of a model-independent...

  9. Tools for top physics at CDF

    SciTech Connect (OSTI)

    Palencia, E.; /Fermilab

    2008-07-01

    The authors describe here the different tools used for top physics analysis in the CDF Collaboration. In particular, they discuss how the jet energy scale, lepton identification, b tagging algorithms and the neural networks help to improve the signal to background ratio of the top sample in some cases and to reduce the dominant uncertainties in other. Results using each one of these tools are also presented.

  10. CDF Searches for New Physics with Photons

    E-Print Network [OSTI]

    Andrey Loginov

    2007-10-10

    We present results of searches for new physics in final states with photons at CDF in approximately 1 fb-1 of ppbar collisions at 1.96 TeV. We give an overview of the data-driven photon background estimation techniques used for the analyses. We report on a search for diphoton peaks and signature-based searches for diphoton+X, lepton+photon+X (X = electron, muon, missing transverse energy, photon) and ttbar+photon.

  11. CDF computing and event data models

    SciTech Connect (OSTI)

    Snider, F.D.; /Fermilab

    2005-12-01

    The authors discuss the computing systems, usage patterns and event data models used to analyze Run II data from the CDF-II experiment at the Tevatron collider. A critical analysis of the current implementation and design reveals some of the stronger and weaker elements of the system, which serve as lessons for future experiments. They highlight a need to maintain simplicity for users in the face of an increasingly complex computing environment.

  12. Status of the CDF silicon detector

    SciTech Connect (OSTI)

    Grinstein, Sebastian; /Harvard U.

    2006-05-01

    The CDF Run II silicon micro-strip detector is an essential part of the heavy flavor tagging and forward tracking capabilities of the experiment. Since the commissioning period ended in 2002, about 85% of the 730 k readout channels have been consistently provided good data. A summary of the recent improvements in the DAQ system as well as experience of maintaining and operating such a large, complex detector are presented.

  13. Initial experience with the CDF layer 00 silicon detector

    SciTech Connect (OSTI)

    C. Hill

    2003-03-17

    We report on initial experience with the CDF Layer 00 Detector. Layer 00 is an innovative, low-mass, silicon detector installed in CDF during the upgrade for Run 2A of the Tevatron. Noise pickup present during operation at CDF is discussed. An event-by-event pedestal correction implemented by CDF is presented. This off-line solution prevents L00 from being used in the current incarnation of the on-line displaced track trigger. Preliminary performance of Layer 00 is described.

  14. Patterned Polymer Multilayers as Etch Resists Wilhelm T. S. Huck, Lin Yan, Abe Stroock, Rainer Haag, and

    E-Print Network [OSTI]

    Prentiss, Mara

    Patterned Polymer Multilayers as Etch Resists Wilhelm T. S. Huck, Lin Yan, Abe Stroock, Rainer Haag. The procedure used to build polymer multilayers consisted of five steps: (i) A polar thiolsHS(CH2)15COOHswas polymer layer was attached to the PEI layer by allowing the amine-terminated surface to react with poly

  15. CDF/TOP/DOC/6265 Version 1.1

    E-Print Network [OSTI]

    CDF/TOP/DOC/6265 Version 1.1 January 14, 2003 Description of data samples for Top and Electroweak a complete description of the high p T electron and muon data samples which will be used for Top from the Top Group Data page http://www-cdf.fnal.gov/internal/physics/top/topdata/newtopdata.html 1

  16. Recent Top Properties Measurements at CDF

    E-Print Network [OSTI]

    Giorgio Chiarelli

    2014-10-09

    We present the most recent CDF results in the measurements of the decay and production vertex of the top-quark. New results on forward-backward asymmetry in top-antitop events are presented. Also, recent measurements of the branching fractions of top-quark are discussed. Finally, measurements in single top events, where top-quark is produced through electroweak processes, are presented. Despite the much larger number of top events collected at the LHC, due to the symmetric initial state and the better signal-to-background ratio in specific channels, some results will be lasting heritage of the Tevatron.

  17. CDF note 9642 Search for the Standard Model Higgs boson in the ET plus jets sample

    E-Print Network [OSTI]

    Fermilab

    CDF note 9642 Search for the Standard Model Higgs boson in the ET plus jets sample The CDF Collaboration URL http://www-cdf.fnal.gov (Dated: August 17, 2009) We search for the Higgs boson produced; the Higgs boson decays into a bb pair. This analysis is an update of the previous one to 3.6 fb-1 of CDF

  18. CDF note 9321 Measurement of the b Jet Production Cross Section

    E-Print Network [OSTI]

    Quigg, Chris

    CDF note 9321 CDF Measurement of the b Jet Production Cross Section in Events with a W± Boson The CDF Collaboration URL http://www-cdf.fnal.gov (Dated: May 21, 2008) The b jet production cross section is measured for events with a W± boson in pp collisions at 1.96 TeV. The data were collected using

  19. Online b-jets tagging at CDF

    SciTech Connect (OSTI)

    Casarsa, M.; Ristori, L.; Amerio, S.; Lucchesi, D.; Pagan Griso, S.; Torre, S.T.; Cortiana, G.; /Padua U., Astron. Dept.

    2007-04-01

    We propose a method to identify b-quark jets at trigger level which exploits recently increased CDF trigger system capabilities. b-quark jets identification is of central interest for the CDF high-P{sub T} physics program, and the possibility to select online b-jets enriched samples can extend the physics reaches especially for light Higgs boson searches where the H {yields} b{bar b} decay mode is dominant. Exploiting new trigger primitives provided by two recent trigger upgrades, the Level2 XFT stereo tracking and the improved Level2 cluster-finder, in conjunction with the existing Silicon Vertex Tracker (SVT), we design an online trigger algorithm aimed at selecting good purity b-jets samples useful for many physics measurements, the most important being inclusive H {yields} b{bar b} searches. We discuss the performances of the proposed b-tagging algorithm which must guarantee reasonable trigger rates at luminosity greater than 2 x 10{sup 32} cm{sup -2}s{sup -1} and provide high efficiency on H {yields} b{bar b} events.

  20. Precision Top-Quark Mass Measurement at CDF

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present a precision measurement of the top-quark mass using the full sample of Tevatron ?s=1.96??TeV proton-antiproton collisions collected by the CDF II detector, corresponding to an integrated luminosity of ...

  1. Inclusive jet cross-section measurement at CDF

    SciTech Connect (OSTI)

    Norniella, Olga; /Barcelona, IFAE

    2007-05-01

    The CDF Collaboration has measured the inclusive jet cross section using 1992-93 collider data at 1.8 TeV. The CDF measurement is in very good agreement with NLO QCD predictions for transverse energies (E{sub T}) below 200 GeV. However, it is systematically higher than NLO QCD predictions for E{sub T} above 200 GeV.

  2. CDF/TOP/DOC/6548 Version 1.1

    E-Print Network [OSTI]

    CDF/TOP/DOC/6548 Version 1.1 July 1, 2003 Description of data samples for Top Group for Summer 2003 T electron and muon data sam- ples which will be used for Top group analysis results for Summer 2003 conferences. Up-to-date information on these samples is available from the Top Group Data page http://www-cdf.fnal.gov/internal/physics/top

  3. Collider Detector at Fermilab (CDF): Data from W, Z bosons and Drell Yan lepton pairs research of the CDF Electroweak Group

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The Electroweak group studies production and properties of W, Z bosons and Drell Yan lepton pairs. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  4. Sleuth at CDF: A Quasi-model-independent search for new electroweak...

    Office of Scientific and Technical Information (OSTI)

    Sleuth at CDF: A Quasi-model-independent search for new electroweak scale physics Citation Details In-Document Search Title: Sleuth at CDF: A Quasi-model-independent search for new...

  5. CDF Note 9674 Combined Upper Limit on Standard Model Higgs Boson Production for Winter 2009

    E-Print Network [OSTI]

    Fermilab

    CDF Note 9674 Combined Upper Limit on Standard Model Higgs Boson Production for Winter 2009 The CDF of searches for the Standard Model Higgs boson at CDF. The six major analyses combined are the WH bV/c2 in steps of 5 GeV/c2 , assuming Standard Model decay branching fractions of the Higgs boson

  6. CDF Note 9999 Combined Upper Limit on Standard Model Higgs Boson Production

    E-Print Network [OSTI]

    Fermilab

    CDF Note 9999 Combined Upper Limit on Standard Model Higgs Boson Production The CDF Collaboration for the Standard Model Higgs boson at CDF. The six major analyses combined are the WH b¯b channels, the WH + ZH E Model decay branching fractions of the Higgs boson and that the ratios of the rates for the WH, ZH, gg

  7. CDF/PUB/TOP/CDFR/11033 Updated Measurement of the Single Top Quark Production Cross1

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/TOP/CDFR/11033 Updated Measurement of the Single Top Quark Production Cross1 Section in the form of a reconstructed jet.30 The first CDF measurement of electroweak single top quark production 1 URL http://www-cdf.fnal.gov5 (Dated: May 9, 2014)6 Abstract An updated measurement

  8. Collider Detector at Fermilab (CDF): Data from the Top Group's Top Quark Research

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The Top group studies the properties of the top quark, the heaviest known fundamental particle. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  9. SCIPP 07/12 CDF/PUB/EXOTIC/PUBLIC/8837

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    SCIPP 07/12 CDF/PUB/EXOTIC/PUBLIC/8837 Tevatron searches for Higgs bosons beyond the standard model , the final search results are kinematically limited by the center-of-mass energy [2]. The Tevatron. In the MSSM parameter space these rates correspond to tan values greater than 50 or 80 for mA = 100 GeV/c2

  10. CDF Note 10796 Search for Standard Model Higgs Boson Production

    E-Print Network [OSTI]

    Fermilab

    CDF Note 10796 Search for Standard Model Higgs Boson Production in Association with a W± Boson present a search for the standard model Higgs boson produced in association with a W± boson. This search that at least one jet be identified to originate from a bottom quark. Discrimination between the Higgs boson

  11. Direct Top-Quark Width Measurement at CDF

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a measurement of the top-quark width in the lepton+jets decay channel of tt? events produced in pp? collisions at Fermilab’s Tevatron collider and collected by the CDF II detector. From a data sample corresponding ...

  12. Recent physics results from CDF and D0

    SciTech Connect (OSTI)

    Evelyn Thomson

    2004-02-25

    Recent physics results from CDF and D0 on heavy flavor physics, electroweak precision measurements, top physics, QCD and searches for new physics are discussed. The results are based on approximately 140 pb{sup -1} of data collected at {radical}s = 1.96 TeV between 2002 and 2003.

  13. Status of the CDF Run II Silicon Detector

    SciTech Connect (OSTI)

    S. Nahn

    2003-04-10

    A snapshot of the status of the CDF Run II Silicon Detector is presented, with a summary of commissioning issues since the start of Run II, current performance of the detector, and the use of the data in both the trigger and offline reconstruction.

  14. CDF/ANAL/TOP/PUBLIC/10048 version 1.0

    E-Print Network [OSTI]

    Quigg, Chris

    mechanisms such as Z bosons or Kaluza-Klein gluons. In the standard model, top quarks decay weakly before any are the numbers of opposite and same helicity events [3]. This analysis measures fo by fitting the helicity angle CDF measurement [5] uses kinematic reconstruction in the dilepton sample to find the lepton and b

  15. CDF/PHYS/JET/PUBLIC/7898 Page 1 of 12

    E-Print Network [OSTI]

    Field, Richard

    CDF/PHYS/JET/PUBLIC/7898 Page 1 of 12 Jet Physics and the Underlying Event at the Tevatron Rick, Florida, 32611, USA Abstract: Tevatron Run 2 results on the inclusive jet cross section (MidPoint and KT algorithm) and the b-jet and bb ­jet cross section (MidPoint algorithm) are presented and compared

  16. CDF/PHYS/JET/CDFR/6419 Version 1.0

    E-Print Network [OSTI]

    Galtieri, Lina

    CDF/PHYS/JET/CDFR/6419 Version 1.0 June 19, 2003 Systematic Uncertainties Associated with Jet. Schmitt Jet Corrections Group Abstract We present an estimate of the systematic uncertainties on the jet jets, as well as for raw jets are given. 1 Introduction In order to convert the jet E T measured

  17. Measurement of Diffractive Dijet Production at the Tevatron F. Abe, 16 H. Akimoto, 35 A. Akopian, 30 M. G. Albrow, 7 S. R. Amendolia, 26 D. Amidei, 19

    E-Print Network [OSTI]

    Quigg, Chris

    Measurement of Diffractive Dijet Production at the Tevatron F. Abe, 16 H. Akimoto, 35 A. Akopian, 30 M. G. Albrow, 7 S. R. Amendolia, 26 D. Amidei, 19 J. Antos, 32 S. Aota, 35 G. Apollinari, 30 T. Asakawa, 35 W. Ashmanskas, 17 M. Atac, 7 F. Azfar, 25 P. Azzi­Bacchetta, 24 N. Bacchetta, 24 W. Badgett

  18. The Tevatron and the CDF Experiment - A Year in Review

    ScienceCinema (OSTI)

    Rob Roser

    2010-01-08

    The Tevatron has had remarkable success over the years.  With the start of the new year, it is natural to reflect back on 2007 and take stock in what has been accomplished.   In this talk, I will cover some of the many highlights of the tevatron program mostly through the eyes of the CDF program.  I will then discuss where we are heading and the physics motivation behind an additional year of running.

  19. New York, June 5, 2014 Rick Field Florida/CDF/CMS Page 1

    E-Print Network [OSTI]

    Field, Richard

    LHCP 2014 New York, June 5, 2014 Rick Field ­ Florida/CDF/CMS Page 1 Outline of Talk CDF Run 2 300 LHCP2013 8.7 fb-1 Phys. Rev. D 88, 072008 (2013) #12;LHCP 2014 New York, June 5, 2014 Rick Field) Many Data/Theory Comparisons! #12;LHCP 2014 New York, June 5, 2014 Rick Field ­ Florida/CDF/CMS Page 4

  20. CDF/PUB/EXOTIC/PUBLIC/10737 Search for a Standard Model Higgs Boson Decaying Into Photons

    E-Print Network [OSTI]

    Fermilab

    CDF/PUB/EXOTIC/PUBLIC/10737 Search for a Standard Model Higgs Boson Decaying Into Photons at CDF) A search for the SM Higgs boson in the diphoton decay channel is reported using data corre- sponding are set on the production cross section times the H branching fraction for hypothetical Higgs boson

  1. CDF Note 10625 Search for the Standard Model Higgs boson in +

    E-Print Network [OSTI]

    Fermilab

    CDF Note 10625 Search for the Standard Model Higgs boson in + - + jets final state with 8.3fb-1 a search for the Standard Model Higgs boson in + - + jets final state, using CDF Run II data with an integrated luminosity of 8.3 fb-1 . The Signal considered in this search is four Higgs boson production

  2. CDF/PUB/TOP/PUBLIC/11068 Search for an Invisible Decaying Higgs Boson in

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/TOP/PUBLIC/11068 Search for an Invisible Decaying Higgs Boson in Dilepton Events at CDF M Abstract We present the first search at the Tevatron for a Higgs boson decaying to an invisible final state fb at 95% credibility level for a Higgs boson mass of 125 GeV/c2. We perform this analysis across

  3. ARM - Time in ARM NetCDF Files

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrnBarrow, AlaskaManus Site-Inactive TWP Related LinksgovDataTime in ARM NetCDF Files

  4. Collider Detector at Fermilab (CDF): Data from Standard Model and Supersymmetric Higgs Bosons Research of the Higgs Group

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The Higgs group searches for Standard Model and Supersymmetric Higgs bosons. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  5. Collider Detector at Fermilab (CDF): Data from the QCD Group's Research into Properties of the Strong Interaction

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    ,

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The QCD group studies the properties of the strong interaction. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  6. Top quark pair production and top quark properties at CDF

    E-Print Network [OSTI]

    Chang-Seong Moon

    2014-11-01

    We present the most recent measurements of top quark pairs production and top quark properties in proton-antiproton collisions with center-of-mass energy of 1.96 TeV using CDF II detector at the Tevatron. The combination of top pair production cross section measurements and the direct measurement of top quark width are reported. The test of Standard Model predictions for top quark decaying into $b$-quarks, performed by measuring the ratio $R$ between the top quark branching fraction to $b$-quark and the branching fraction to any type of down quark is shown. The extraction of the CKM matrix element $|V_{tb}|$ from the ratio $R$ is discussed. We also present the latest measurements on the forward-backward asymmetry ($A_{FB}$) in top anti-top quark production. With the full CDF Run II data set, the measurements are performed in top anti-top decaying to final states that contain one or two charged leptons (electrons or muons). In addition, we combine the results of the leptonic forward-backward asymmetry in $t\\bar t$ system between the two final states. All the results show deviations from the next-to-leading order (NLO) standard model (SM) calculation.

  7. Top quark mass measurement from dilepton events at CDF II

    SciTech Connect (OSTI)

    Abulencia, A.; Acosta, D.; Adelman, Jahred A.; Affolder, Anthony A.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara /Cantabria Inst. of Phys.

    2005-12-01

    We report a measurement of the top quark mass using events collected by the CDF II Detector from p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron. We calculate a likelihood function for the top mass in events that are consistent with t{bar t} {yields} {bar b}{ell}{sup -}{bar {nu}}{sub {ell}}b{ell}{prime}{sup +}{nu}{sub {ell}}{prime} decays. The likelihood is formed as the convolution of the leading-order matrix element and detector resolution functions. The joint likelihood is the product of likelihoods for each of 33 events collected in 340 pb{sup -1} of integrated luminosity, yielding a top quark mass M{sub t} = 165.2 {+-} 6.1(stat.) {+-} 3.4(syst.) GeV/c{sup 2}. This first application of a matrix-element technique to t{bar t} {yields} b{ell}{sup +}{nu}{sub {ell}}{bar b}{ell}{prime}{sup -}{bar {nu}}{sub {ell}}, decays gives the most precise single measurement of M{sub t} in dilepton events. Combined with other CDF Run II measurements using dilepton events, we measure M{sub t} = 167.9 {+-} 5.2(stat.) {+-} 3.7(syst.) GeV/c{sup 2}.

  8. Measurement of B Hadron Lifetimes Using J=/ Final States at CDF F. Abe, 17 H. Akimoto, 39 A. Akopian, 31 M. G. Albrow, 7 A. Amadon, 5 S. R. Amendolia, 27 D. Amidei, 20 J. Antos, 33

    E-Print Network [OSTI]

    Quigg, Chris

    , 7 K. L. Byrum, 1 J. Cammerata, 29 M. Campbell, 20 A. Caner, 27 W. Carithers, 18 D. Carlsmith, 40 J

  9. Standard model high mass Higgs search at CDF

    SciTech Connect (OSTI)

    Lucchesi, Donatella; /INFN, Padua

    2010-01-01

    The CDF collaboration has analyzed almost 6 f b{sup -1} of data collected at the Tevatron Collider at {radical}{ovr s} = 1.96 TeV to search for Standard Model Higgs boson through the decay into W{sup +}W{sup -}*. Starting from events with two leptons, advanced analysis techniques are applied to better discriminate signal from background. The Higgs sensitivity is maximized combining together analysis that exploit different event topologies. No significant excess over the expected background is observed and data is used to set a limit in units of Standard Model expectations. The limit plays a fundamental role in the Higgs search excluding the existence of this particle with mass between 158 and 175 GeV/c{sup 2} when combined with D0, the other Tevatron experiment.

  10. Measurement of b_s oscillations at CDF

    SciTech Connect (OSTI)

    Salamanna, G.; /Rome U. /INFN, Rome

    2006-09-01

    The first precise measurement of the B{sub s}{sup 0} - {bar B}{sub s}{sup 0} oscillation frequency {Delta}m{sub s} with the CDFII experiment is summarized in this talk. The measurement is performed with 1 fb{sup -1} of data collected at the Fermilab Tevatron hadron collider. They find a signal consistent with flavor oscillations; the probability that such a signal is originated by random fluctuations is 0.2%. They measure {Delta}m{sub s} = 17.31{sub -0.18}{sup +0.33}(stat.) {+-} 0.07(syst.)ps{sup -1}. After a brief theoretical overview, the author describes the experimental technique and shows the results of the CDF analysis and the |V{sub td}/V{sub ts}| value we infer from this measurement.

  11. Searching for New Physics through Charm at CDF

    SciTech Connect (OSTI)

    Di Canto, Angelo

    2011-05-01

    We report a search for non-Standard Model physics through the measurement of CP-violating asymmetry in the Cabibbo suppressed D{sup 0} {yields} {pi}{sup +}{pi}{sup -} and D{sup 0} {yields} K{sup +}K{sup -} decays reconstructed in about 5.94 fb{sup -1} of CDF data. We use the strong D*{sup +} {yields} D{sup 0} {pi}{sup +} decay (D* tag) to identify the flavor of the charmed meson at production time and exploit CP-conserving strong c{bar c} pair-production in p{bar p} collisions. Large samples of Cabibbo favored D{sup 0} {yields} K{sup -}{pi}{sup +} decays with and without D* tag are used to highly suppress systematic uncertainties due to detector effects. The results are the world's most precise measurements to date.

  12. Updated measurements of hadronic B decays at CDF

    SciTech Connect (OSTI)

    Morello, Michael J.

    2012-01-01

    The CDF experiment at the Tevatron p{bar p} collider established that extensive and detailed exploration of the b-quark dynamics is possible in hadron collisions, with results competitive and supplementary to those from e{sup +}e{sup -} colliders. This provides a rich, and highly rewarding program that has currently reached full maturity. In the following I report some recent results on hadronic decays: the evidence for the charmless annihilation decay mode B{sub s}{sup 0} {yields} {pi}{sup +}{pi}{sup -}, and the first reconstruction in hadron collisions of the suppressed decays B{sup -} {yields} D({yields} K{sup +}{pi}{sup 0})K{sup -} and B{sup -} {yields} D({yields} K{sup +} {pi}{sup -}){pi}{sup -}.

  13. Performance of the CDF Online Silicon Vertex Tracker

    SciTech Connect (OSTI)

    R. Carosi et al.

    2002-03-27

    The Online Silicon Vertex Tracker (SVT) is the new trigger processor dedicated to the 2-D reconstruction of charged particle trajectories at the Level 2 of the CDF trigger. The SVT links the digitized pulse heights found within the Silicon Vertex detector to the tracks reconstructed in the Central Outer Tracker by the Level 1 fast track finder. Preliminary tests of the system took place during the October 2000 commissioning run of the Tevatron Collider. During the April-October 2001 data taking it was possible to evaluate the performance of the system. In this paper we review the tracking algorithms implemented in the SVT and we report on the performance achieved during the early phase of run II.

  14. Observation of the sigma_b baryons at CDF

    SciTech Connect (OSTI)

    Pursley, Jennifer M.; /Johns Hopkins U.

    2007-03-01

    We present a measurement of four new bottom baryons in proton-antiproton collisions with a center of mass energy of 1.96 TeV. Using 1.1 fb{sup -1} of data collected by the CDF II detector, we observe four {Lambda}{sup 0}{sub b}{pi}{+-} resonances in the fully reconstructed decay mode {Lambda}{sup 0}{sub b} {yields} {Lambda}{sup +}{sub c}{pi}{sup -}, where {Lambda}{sup +}{sub c} {yields} pK{sup -}{pi}{sup +}. The probability for the background to produce a similar or larger signal is less than 8.3 x 10{sup -8}, corresponding to a significance of greater than 5.2 {sigma}. We interpret these baryons as the {Sigma}{sub b}{sup (*){+-}} baryons.

  15. CDF note 9640 Search for X ZZ with 3 fb-1

    E-Print Network [OSTI]

    Quigg, Chris

    dilepton pair using the nominal CDF event reconstruction software, we reprocess these events pair of final states from the reprocessed data. The electron criteria listed in Tables I through III

  16. Mechanical Design of the CDF SVX~II Silicon Vertex Detector

    E-Print Network [OSTI]

    J. Skarha for the CDF SVX~II Group

    1995-01-24

    A next generation silicon vertex detector is planned at CDF for the 1998 Tevatron collider run with the Main Injector. The SVX~II silicon vertex detector will allow high luminosity data-taking, enable online triggering of secondary vertex production, and greatly increase the acceptance for heavy flavor physics at CDF. The design specifications, geometric layout, and early mechanical prototyping work for this detector are discussed.

  17. An Approach to Enhance pnetCDF Performance in Environmental Modeling Applications

    SciTech Connect (OSTI)

    Wong, David; Yang, Cheng-En; Fu, Joshua S.; Wong, Kwai; Gao, Yang

    2015-01-01

    I/O has been considered as a bottleneck in parallel applications. The software package, pnetCDF which works with parallel file systems, was developed to address this issue and provide parallel I/O capability. This study examines the performance of a novel approach which performs data aggregation along either row or column dimension of the spatial domain, and then applies the pnetCDF parallel I/O paradigm. The test was done with three different domain sizes which represents small, moderately large and large data domains, using a small scale Community Multi-scale Air Quality model (CMAQ) mocked up code. The examination includes comparing I/O performance with traditional serial I/O technique, straight application of pnetCDF, and the data aggregation along row and column dimension before applying pnetCDF. After the comparison, “optimal” I/O configurations for this new novel approach were quantified. Data aggregation along the row dimension (pnetCDFcr) works better than along the column dimension (pnetCDFcc) although it may perform slightly worse than straight the pnetCDF method with a small number of processors. When the number of processors becomes larger, pnetCDFcr out performs pnetCDF significantly. If the number of processors keeps increasing, pnetCDF reaches a point that the performance is even worse than the serial I/O technique. This new approach has also been tested on a real application where it performs two times better than the straight pnetCDF paradigm.

  18. CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production in 7.5 fb-1 of CDF Data Using a measurement of single top quark production in lepton plus jets final state using 7.5 fb-1 of p¯p collision. We measure a cross section of 3.04+0.57 -0.53pb (stat+syst) and set a lower limit |Vtb| > 0

  19. CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production in 7.5 fb-1 of CDF Data Using a measurement of single top quark production in lepton plus jets final state using 7.5 fb-1 of p¯p collision. We measure a cross section of 3.04+0.57 -0.53pb (stat. + syst.) and set a lower limit |Vtb| > 0

  20. CDF/PHYS/EXO/PUBLIC/10464 An inclusive search for new physics in like-sign dilepton events at CDF with 6.1 fb-1

    E-Print Network [OSTI]

    Quigg, Chris

    a search for new physics in events with two high pT leptons of the same electric charge using data the statistical consistency. Companion notes interpret the sample in terms of supersymmetry [7] and same-sign top quarks [8]. II. DATASET AND SELECTION Events were recorded by CDF II [9, 10], a general purpose detector

  1. Top quark mass measurement using the template method at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T

    2011-06-03

    We present a measurement of the top quark mass in the lepton+jets and dilepton channels of t$\\bar{t}$ decays using the template method. The data sample corresponds to an integrated luminosity of 5.6 fb-1 of p$\\bar{p}$ collisions at Tevatron with ?s = 1.96 TeV, collected with the CDF II detector. The measurement is performed by constructing templates of three kinematic variables in the lepton+jets and two kinematic variables in the dilepton channel. The variables are two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decay in the lepton+jets channel, and amore »reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of Mtop = 172.1±1.1 (stat)±0.9 (syst) GeV/c2.« less

  2. Precision Top-Quark Mass Measurements at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2012-07-01

    We present a precision measurement of the top-quark mass using the full sample of Tevatron {radical}s = 1.96 TeV proton-antiproton collisions collected by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb{sup -1}. Using a sample of t{bar t} candidate events decaying into the lepton+jets channel, we obtain distributions of the top-quark masses and the invariant mass of two jets from the W boson decays from data. We then compare these distributions to templates derived from signal and background samples to extract the top-quark mass and the energy scale of the calorimeter jets with in situ calibration. The likelihood fit of the templates from signal and background events to the data yields the single most-precise measurement of the top-quark mass, mtop = 172.85 {+-} 0.71 (stat) {+-} 0.85 (syst) GeV/c{sup 2}.

  3. Top quark mass measurement using the template method at CDF

    SciTech Connect (OSTI)

    Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Apresyan, A; Arisawa, T

    2011-06-03

    We present a measurement of the top quark mass in the lepton+jets and dilepton channels of tt? decays using the template method. The data sample corresponds to an integrated luminosity of 5.6 fb-1 of pp? collisions at Tevatron with ?s = 1.96 TeV, collected with the CDF II detector. The measurement is performed by constructing templates of three kinematic variables in the lepton+jets and two kinematic variables in the dilepton channel. The variables are two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decay in the lepton+jets channel, and a reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of Mtop = 172.1±1.1 (stat)±0.9 (syst) GeV/c2.

  4. Top quark mass measurement using the template method at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T [Helsinki Inst. of Phys.; Alvarez Gonzalez, B [Oviedo U.; Cantabria Inst. of Phys.; Amerio, S [INFN, Padua; Amidei, D [Michigan U.; Anastassov, A [Northwestern U.; Annovi, A [Frascati; Antos, J [Comenius U.; Apollinari, G [Fermilab; Appel, J A [Fermilab; Apresyan, A [Purdue U.; Arisawa, T [Waseda U.; Dubna, JINR

    2011-06-03

    We present a measurement of the top quark mass in the lepton+jets and dilepton channels of tt? decays using the template method. The data sample corresponds to an integrated luminosity of 5.6 fb-1 of pp? collisions at Tevatron with ?s = 1.96 TeV, collected with the CDF II detector. The measurement is performed by constructing templates of three kinematic variables in the lepton+jets and two kinematic variables in the dilepton channel. The variables are two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decay in the lepton+jets channel, and a reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of Mtop = 172.1±1.1 (stat)±0.9 (syst) GeV/c2.

  5. CDF Note 10979 Measurement of Single Top Production Cross Section in E/T plus Jets Sample with the

    E-Print Network [OSTI]

    Quigg, Chris

    CDF CDF Note 10979 Measurement of Single Top Production Cross Section in E/T plus Jets Sample a measurement of single top production cross section selecting events consistent with W+jets topology but where, this sample provides, albeit with low precision, an independent measurement of the single top production cross

  6. LOCA with consequential or delayed LOOP accidents: Unique issues, plant vulnerability, and CDF contributions

    SciTech Connect (OSTI)

    Martinez-Guridi, G.; Samanta, P.; Chu, L.; Yang, J.

    1998-08-01

    A loss-of-coolant accident (LOCA) can cause a loss-of-offsite power (LOOP) wherein the LOOP is usually delayed by few seconds or longer. Such an accident is called LOCA with consequential LOOP, or LOCA with delayed LOOP (here, abbreviated as LOCA/LOOP). This paper analyzes the unique conditions that are associated with a LOCA/LOOP, presents a model, and quantifies its contribution to core damage frequency (CDF). The results show that the CDF contribution can be a dominant contributor to risk for certain plant designs, although boiling water reactors (BWRs) are less vulnerable than pressurized water reactors (PWRs).

  7. Testing the Technicolor Interpretation of CDF's Dijet Excess at the LHC

    SciTech Connect (OSTI)

    Eichten, Estia; Lane, Kenneth; Martin, Adam; Pilon, Eric

    2012-01-01

    Under the assumption that the dijet excess seen by the CDF Collaboration near 150 Gev in Wjj production is due to the lightest technipion of the low-scale technicolor process $\\rho_T \\rightarrow W \\pi_T$, we study its observability in LHC detectors with 1--20 inverse femtobarns of data. We describe interesting new kinematic tests that can provide independent confirmation of this LSTC hypothesis. We find that cuts similar to those employed by CDF, and recently by ATLAS, cannot confirm the dijet signal. We propose cuts tailored to the LSTC hypothesis and its backgrounds at the LHC that may reveal $\\rho_T \\rightarrow \\ell\

  8. CDF/PUB/EXOTIC/PUBLIC/9586 Search for a Fermiophobic Higgs Boson with the Diphoton Final

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/EXOTIC/PUBLIC/9586 Search for a Fermiophobic Higgs Boson with the Diphoton Final State for the Higgs boson in the di-photon decay channel is reported. The Standard Model branching fraction is small. INTRODUCTION Low mass Higgs boson searches at the Tevatron usually focus on the dominant b¯b decay channel

  9. Combination of searches for the Higgs boson using the full CDF data set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present a combination of searches for the standard model Higgs boson using the full CDF run II data set, which corresponds to an integrated luminosity of 9.45–10.0??fb[superscript ?1] collected from s? = 1.96??TeV p[¯ ...

  10. Combination of CDF and D0 measurements of the W boson helicity in top quark decays

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of 2.7–5.4??fb[superscript ...

  11. Top-Quark Mass Measurement Using Events with Missing Transverse Energy and Jets at CDF

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a measurement of the top-quark mass using a sample of tt? events in 5.7??fb[superscript -1] of integrated luminosity from pp? collisions at the Fermilab Tevatron with ?s=1.96??TeV and collected by the CDF II ...

  12. Novel inclusive search for the Higgs boson in the four-lepton final state at CDF

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    An inclusive search for the standard model Higgs boson using the four-lepton final state in proton-antiproton collisions produced by the Tevatron at ?s=1.96??TeV is conducted. The data are recorded by the CDF II detector ...

  13. Search for Randall-Sundrum gravitons in the diphoton channel at CDF

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We report on a search for new particles in the diphoton channel using a data sample of pp? collisions at ?s=1.96??[square root of s-1.96] TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated ...

  14. Search for Resonances Decaying to Top and Bottom Quarks with the CDF Experiment

    E-Print Network [OSTI]

    Aaltonen, T.

    We report on a search for charged massive resonances decaying to top (t) and bottom (b) quarks in the full data set of proton-antiproton collisions at a center-of-mass energy of ?s = 1.96??TeV collected by the CDF II ...

  15. Precise Measurement of the W-Boson Mass with the CDF II Detector

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We have measured the W-boson mass M[superscript W] using data corresponding to 2.2??fb[superscript -1] of integrated luminosity collected in pp? collisions at ?s=1.96??TeV with the CDF II detector at the Fermilab Tevatron ...

  16. Search for a Higgs Boson Decaying to Two W Bosons at CDF

    E-Print Network [OSTI]

    Makhoul, K.

    We present a search for a Higgs boson decaying to two W bosons in pp? collisions at ?s=1.96??TeV center-of-mass energy. The data sample corresponds to an integrated luminosity of 3.0??fb-1 collected with the CDF II detector. ...

  17. Combination of CDF and D0 W-Boson mass measurements

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We summarize and combine direct measurements of the mass of the W boson in s? = 1.96??TeV proton-antiproton collision data collected by CDF and D0 experiments at the Fermilab Tevatron Collider. Earlier measurements from ...

  18. PREVENTTVE FACILITIES AND EMERGENCY OPERATIONS IN CASE OFFIRES IN CdF COAL MINES

    E-Print Network [OSTI]

    Boyer, Edmond

    ). The upper group consists of a bituminous soft coal, the lower coke coal. The field is sharply folded alongPREVENTTVE FACILITIES AND EMERGENCY OPERATIONS IN CASE OFFIRES IN CdF COAL MINES J.P. AMARTIN HJSJL a stricl methodology. It has been possjble then to resume coal winning, which has cor.tmued until

  19. CDF Note 11157 Measurement of WW and WZ production in the

    E-Print Network [OSTI]

    Quigg, Chris

    CDF Note 11157 Measurement of WW and WZ production in the lepton+Heavy Flavor jets channel+WZ production in this final state and to extract a cross section measurement of WW+WZ = 13.7 ± 3.9 pb of the secondary-decay vertex properties allow to independently measure the WW and WZ production cross section

  20. CDF Note 10436 Measurement of the Forward Backward Asymmetry in Top Pair Production in the

    E-Print Network [OSTI]

    Quigg, Chris

    CDF Note 10436 Measurement of the Forward Backward Asymmetry in Top Pair Production in the Dilepton) We report on a measurement of the inclusive forward-backward asymmetry in t¯t production production at energies at the Tevatron, which has been measured to be consistent with standard model

  1. CDF note 9988 Measurement of the tt production cross section in the ET + jets channel

    E-Print Network [OSTI]

    Quigg, Chris

    CDF note 9988 Measurement of the t¯t production cross section in the ET + jets channel with 2.2 fb we describe the measurement of the t¯t production cross section in the final state characterized parameterized probabilities of b-jet identification, measured directly from data. The resulting t¯t production

  2. Evidence for a bottom baryon resonance ?[*0 over b] in CDF data

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    Using data from proton-antiproton collisions at s? = 1.96??TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state ?[*0 over b] is presented in its ?[0 over b]?[superscript ...

  3. CDF Note 10355 Search for Anomalous Production of Photon + Jets + Missing

    E-Print Network [OSTI]

    Quigg, Chris

    CDF Note 10355 Search for Anomalous Production of Photon + Jets + Missing Transverse Energy Events Abstract Many new physics models predict mechanisms that could produce a + jets signature. We search for discrepancies in the + jets and + jets + missing transverse energy channels, independent of any model, for new

  4. Measurement of ZZ Production in Leptonic Final States at ?s of 1.96 TeV at CDF

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    In this Letter, we present a precise measurement of the total ZZ production cross section in pp? collisions at ?s=1.96??TeV, using data collected with the CDF II detector corresponding to an integrated luminosity of ...

  5. Testing the Technicolor Interpretation of the CDF Dijet Excess at the 8-TeV LHC

    SciTech Connect (OSTI)

    Eichten, Estia; Lane, Kenneth; Martin, Adam; Pilon, Eric

    2012-10-01

    Under the assumption that the dijet excess seen by the CDF Collaboration near 150 Gev in Wjj production is due to the lightest technipion of the low-scale technicolor process $\\rho_T \\rightarrow W \\pi_T$, we study its observability in LHC detectors for 8 TeV collisions and 20 inverse femtobarns of integrated luminosity. We describe interesting new kinematic tests that can provide independent confirmation of this LSTC hypothesis. We show that cuts similar to those employed by CDF, and recently by ATLAS, cannot confirm the dijet signal. We propose cuts tailored to the LSTC hypothesis and its backgrounds at the LHC that may reveal $\\rho_T \\rightarrow \\ell\

  6. Data production of a large Linux PC Farm for the CDF experiment

    E-Print Network [OSTI]

    J. Antos; M. Babik; A. W. Chan; Y. C. Chen; S. Hou; T. L. Hsieh; R. Lysak; I. V. Mandrichenko; M. Siket; J. Syu; P. K. Teng; S. C. Timm; S. A. Wolbers; P. Yeh

    2006-03-04

    The data production farm for the CDF experiment is designed and constructed to meet the needs of the Run II data collection at a maximum rate of 20 MByte/sec during the run. The system is composed of a large cluster of personal computers (PCs) with a high-speed network interconnect and a custom design control system for the flow of data and the scheduling of tasks on this PC farm. The farm explores and exploits advances in computing and communication technology. The data processing has achieved a stable production rate of approximately 2 TByte per day. The software and hardware of the CDF production farms has been successful in providing large computing and data throughput capacity to the experiment.

  7. Combined upper limit on Standard Model Higgs boson production at CDF

    SciTech Connect (OSTI)

    Adrian, Buzatu; /McGill U.

    2012-02-01

    The Higgs boson is the only elementary particle predicted by the Standard Model (SM) that has neither been confirmed nor refuted. The CDF collaboration has performed SM Higgs searches in many channels using p{bar p} collisions at a centre-of-mass energy {radical}s = 1.96 TeV. We present the latest combined Higgs boson search at CDF. Since the previous year's combination, the sensitivity is increased through the addition of new channels, the improvement of existing channels and the addition of new data samples. We also use the latest parton distribution functions and gg {yields} H theoretical cross sections when modelling the signal event yields. Using integrated luminosities of up to 8.2 fb{sup -1}, we observe a good agreement between data and the background prediction. Since we do not see a Higgs boson excess, we set 95% CL upper limits on the Higgs boson cross section in the range between 100 and 200 GeV/c{sup 2}, with 5 GeV/c{sup 2} increments. The observed (expected) limits for a 115 and a 165 GeV/c{sup 2} Higgs boson are 1.55 (1.49) and 0.75 (0.79) x SM, respectively. Since last year, the Higgs boson excluded range by CDF is extended to 156.5 - 173.7 and 100 - 104.5 GeV/c{sup 2}.

  8. CDF trigger final balance: Offline resolution at low level selections to fight against Tevatron increasing luminosity

    SciTech Connect (OSTI)

    Amerio, S.; /Padua U. /INFN, Padua

    2010-01-01

    The CDF detector at Tevatron collider is at present the most long-lasting high energy physics experiment. Since its first data taking in 1992 it has produced many results of primary importance, such as the discovery of top quark and, more recently, the observations of Bs oscillations and single-top production. None of them would have been possible without a fast and efficient trigger system. Based on a three level architecture, the CDF trigger takes decisions on simple calorimetric and tracking objects and assures both high efficiency on signal events and low dead time. It reduces the data flow rate from 2.53 MHz, the collision rate, to 150 Hz, the current limit on tape writing and is flexible enough to be easily adapted to the continuously growing instantaneous luminosity. In the last years the Tevatron instantaneous luminosity has rapidly increased and is now reaching 4 x 10{sup 32} cm{sup -2} s{sup -1}. The CDF trigger system has been widely upgraded to cope with increasing trigger rates. The upgrade result is online reconstruction of missing transverse energy, jets and tracks with a quality comparable to the offline one. Jet energy and direction can be precisely determined and tracks can be subjected to 3-D reconstruction with good resolution. These upgrades reduce high trigger rates to acceptable levels and have provided invaluable tools to increase the purity of the collected samples. They also represent a helpful experience for LHC experiments where background rates will be much more demanding.

  9. Combined upper limit on Standard Model Higgs boson production at CDF

    E-Print Network [OSTI]

    Buzatu Adrian

    2012-02-09

    The Higgs boson is the only elementary particle predicted by the Standard Model (SM) that has neither been confirmed nor refuted. The CDF collaboration has performed SM Higgs searches in many channels using $p\\pbar$ collisions at a centre-of-mass energy $\\sqrt{s}=1.96\\tev$. We present the latest combined Higgs boson search at CDF. Since the previous year's combination, the sensitivity is increased through the addition of new channels, the improvement of existing channels and the addition of new data samples. We also use the latest parton distribution functions and $gg \\rightarrow H$ theoretical cross sections when modelling the signal event yields. Using integrated luminosities of up to 8.2 $\\invfb$, we observe a good agreement between data and the background prediction. Since we do not see a Higgs boson excess, we set 95% CL upper limits on the Higgs boson cross section in the range between 100 and 200 $\\gevcc$, with 5 $\\gevcc$ increments. The observed (expected) limits for a 115 and a 165 $\\gevcc$ Higgs boson are 1.55 (1.49) and 0.75 (0.79) $\\times$ SM, respectively. Since last year, the Higgs boson excluded range by CDF is extended to 156.5 - 173.7 and 100 - 104.5 $\\gevcc$.

  10. Search for Anomalous Production of Events with Two Photons and Additional Energetic Objects at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; /Helsinki Inst. of Phys.; Adelman, J.; /Chicago U., EFI; Alvarez Gonzalez, B.; /Oviedo U. /Cantabria Inst. of Phys.; Amerio, S.; /Padua U. /INFN, Padua; Amidei, D.; /Michigan U.; Anastassov, A.; /Northwestern U.; Annovi, A.; /Frascati; Antos, J.; /Comenius U. /Kosice, IEF; Apollinari, G.; /Fermilab; Apresyan, A.; /Purdue U.; Arisawa, T.; /Waseda U. /Dubna, JINR

    2009-10-01

    The authors present results of a search for anomalous production of two photons together with an electron, muon, {tau} lepton, missing transverse energy, or jets using p{bar p} collision data from 1.1-2.0 fb{sup -1} of integrated luminosity collected by the Collider Detector at Fermilab (CDF). The event yields and kinematic distributions are examined for signs for new physics without favoring a specific model of new physics. The results are consistent with the standard model expectations. The search employs several new analysis techniques that significantly reduce instrumental backgrounds in channels with an electron and missing transverse energy.

  11. Combination of CDF and D0 Results on the W-Boson Width

    SciTech Connect (OSTI)

    Not Available

    2005-12-01

    The results on the direct measurements of the W-boson width, based on the data collected by the Tevatron experiments CDF and D0 at Fermilab during Run-I from 1992 to 1996 and Run-II since 2001 are summarized. The combination of the published Run-I and preliminary Run-II results, taking correlated uncertainties properly into account, is presented. The resulting preliminary Tevatron average for the total decay width of the W boson is: {Lambda}{sub W} = 2078 {+-} 87 MeV, where the total error consists of a statistical part of 62 MeV and a systematic part of 60 MeV.

  12. Search for Supersymmetry in the Dilepton Final State with Taus at CDF Run II

    SciTech Connect (OSTI)

    Forrest, Robert David; /California U., Davis

    2011-09-01

    This thesis presents the results a search for chargino and neutralino supersymmetric particles yielding same signed dilepton final states including one hadronically decaying tau lepton using 6.0 fb{sup -1} of data collected by the the CDF II detector. This signature is important in SUSY models where, at high tan {beta}, the branching ratio of charginos and neutralinos to tau leptons becomes dominant. We study event acceptance, lepton identification cuts, and efficiencies. We set limits on the production cross section as a function of SUSY particle mass for certain generic models.

  13. Search for non-standard model signatures in the WZ/ZZ final state at CDF run II

    SciTech Connect (OSTI)

    Norman, Matthew; /UC, San Diego

    2009-01-01

    This thesis discusses a search for non-Standard Model physics in heavy diboson production in the dilepton-dijet final state, using 1.9 fb{sup -1} of data from the CDF Run II detector. New limits are set on the anomalous coupling parameters for ZZ and WZ production based on limiting the production cross-section at high {cflx s}. Additionally limits are set on the direct decay of new physics to ZZ andWZ diboson pairs. The nature and parameters of the CDF Run II detector are discussed, as are the influences that it has on the methods of our analysis.

  14. Searches for new physics in the tt-bar events at CDF

    SciTech Connect (OSTI)

    Loginov, Andrey; /Yale U.

    2009-01-01

    The authors review the latest results on searches for physics beyond the Standard Model in the top quark sector at CDF Run II in a data sample with integrated luminosity up to 2.8 fb{sup -1}. Since its discovery, the top quark has appeared to be a very special object. It is distinguished by its large mass ({approx} 170 GeV) close to the scale of electroweak symmetry breaking (EWSB), and a Yukawa coupling surprisingly close to one (0.98). Is the top quark mass generated by the Higgs mechanism as the Standard Model (SM) predicts, or does it play a more fundamental role in the EWSB? How would physics beyond the standard model (SM) affect top quark properties? Searches for new physics (NP) should provide answers to the many open questions left by the SM. In these proceedings they present the latest CDF results on the searches for exotic decay modes of the top quark, as well as the production and decay of new particles into final states with a top quark pair. The analyses of the Run II data are performed with approximately 30 times the statistics of the Run I top quark discovery.

  15. Study of the top quark electric charge at the CDF experiment

    SciTech Connect (OSTI)

    Bartos, Pavol; /Comenius U.

    2011-09-01

    We report on the measurement of the top quark electric charge using the jet charge tagging method on events containing a single lepton collected by the CDF II detector at Fermilab between February 2002 and February 2010 at the center-of-mass energy {radical}s = 1.96 TeV. There are three main components to this measurement: determining the charge of the W (using the charge of the lepton), pairing the W with the b-jet to ensure that they are from the same top decay branch and finally determining the charge of the b-jet using the Jet Charge algorithm. We found, on a sample of 5.6 fb{sup -1} of data, that the p-value under the standard model hypothesis is equal to 13.4%, while the p-value under the exotic model hypothesis is equal to 0.014%. Using the a priori criteria generally accepted by the CDF collaboration, we can say that the result is consistent with the standard model, while we exclude an exotic quark hypothesis with 95% confidence. Using the Bayesian approach, we obtain for the Bayes factor (2ln(BF)) a value of 19.6, that favors very strongly the SM hypothesis over the XM one. The presented method has the highest sensitivity to the top quark electric charge among the presented so far top quark charge analysis.

  16. Measurement of the Branching fraction ratio B ---> D K / B ---> D pi with the CDF II detector

    SciTech Connect (OSTI)

    Squillacioti, Paola; /INFN, Pisa /Siena U.

    2006-11-01

    In this thesis the author has described the first measurement performed at a hadron collider of the branching fraction of the Cabibbo-suppressed mode B{sup +} {yields} {bar D}{sup 0} K{sup +}. The analysis has been performed with 360 pb{sup -1} of data collected by the CDF II detector.

  17. CDF note 10798 Seach for the SM Higgs boson in the ET +b-jets signature with relaxed

    E-Print Network [OSTI]

    Fermilab

    CDF note 10798 Seach for the SM Higgs boson in the ET +b-jets signature with relaxed kinematic cuts) We present a search for the Higgs boson produced in association with a Z or W boson in the ET +b the Higgs boson signal from the remaining background. We check the goodness of our background modeling

  18. Inclusive Search for Standard Model Higgs Boson Production in the WW Decay Channel Using the CDF II Detector

    E-Print Network [OSTI]

    Xie, Si

    We present a search for standard model (SM) Higgs boson production using pp? collision data at ?s=1.96??TeV, collected with the CDF II detector and corresponding to an integrated luminosity of 4.8??fb[superscript -1]. We ...

  19. CDF note 10582 Search for SM Higgs boson production in association with tt using no lepton final state

    E-Print Network [OSTI]

    Fermilab

    CDF note 10582 Search for SM Higgs boson production in association with t¯t using no lepton final is that t¯t decay all hadronic mode (all t decay into bqq ). In both cases we consider that the Higgs boson discriminant variable from different neural network to discriminate the Higgs boson signal from remained

  20. 2012 Update of the Combination of CDF and D0 Results for the Mass of the W Boson

    SciTech Connect (OSTI)

    Tevatron Electroweak Working Group,

    2012-04-01

    We summarize and combine the results on the direct measurements of the mass of the W boson in data collected by the Tevatron experiments CDF and D0 at Fermilab. Earlier results from CDF Run-0 (1988-1989), D0 and CDF Run-I (1992-1995) and D0 results from 1 fb{sup -1} (2002-2006) of Run-II data are now combined with two new, high statistics Run-II measurements: a CDF measurement in both electron and muon channels using 2.2 fb{sup -1} of integrated luminosity collected between 2002 and 2007, and a D0 measurement in the electron channel using 4.3 fb{sup -1} collected between 2006 and 2009. As in previous combinations, the results are corrected for inconsistencies in parton distribution functions and assumptions about electroweak parameters used in the different analyses. The resulting Tevatron average for the mass of the W boson is M{sub W} = 80,387 {+-} 16 MeV and a new world average including data from LEP II is M{sub W} = 80,385 {+-} 15 MeV.

  1. Combined Search for the Standard Model Higgs Boson Decaying to a bb? Pair Using the Full CDF Data Set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We combine the results of searches for the standard model (SM) Higgs boson based on the full CDF Run II data set obtained from ?s=1.96??TeV pp? collisions at the Fermilab Tevatron corresponding to an integrated luminosity ...

  2. CDF/ANAL/TOP/PUB/8272 Measurement of the t t Production Cross Section in SecVtx-and Neural

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/ANAL/TOP/PUB/8272 Measurement of the t #22; t Production Cross Section in SecVtx- and Neural) We present a measurement of the p#22;p ! t #22; t production cross section at p s = 1:96 Te production cross section at such energies is a basic measurement o#11;ering insight into top quark physics

  3. Search for Standard Model Higgs Boson in H to WW Channel at CDF

    E-Print Network [OSTI]

    J. Pursley; for the CDF Collaboration

    2009-10-08

    We present a search for standard model Higgs boson to WW(*) production in dilepton plus missing transverse energy final states in data collected by the CDF II detector corresponding to 4.8/fb of integrated luminosity. To maximize sensitivity, the multivariate discriminants used to separate signal from background in the opposite-sign dilepton event sample are independently optimized for final states with zero, one, or two or more identified jets. All significant Higgs boson production modes (gluon fusion, associated production with either a W or Z boson, and vector boson fusion) are considered in determining potential signal contributions. We also incorporate a separate analysis of the same-sign dilepton event sample which potentially contains additional signal events originating from associated Higgs boson production mechanisms. Cross section limits relative to the combined SM predictions are presented for a range of Higgs boson mass hypotheses between 110 and 200 GeV/c^2.

  4. Search for Electroweak Single-Top Quark Production with the CDF II Experiment

    SciTech Connect (OSTI)

    Buehler, Matthias; /Karlsruhe U., EKP

    2006-08-01

    The CDF II experiment and the Tevatron proton-antiproton collider are parts of the Fermi National Laboratories (Fermilab). The Fermilab is located in the vicinity of Chicago, USA. Today, the Tevatron is the only collider which is able to produce the heaviest known elementary particle, the top quark. The top quark was discovered at the Tevatron by the CDF and the D0 collaborations in 1995 [1]. So far, all the top quarks found are produced via the strong interaction as top-antitop pairs. The Standard Model of elementary particle physics also predicts single-top quark production via the electroweak interaction. This production mode has not yet been observed. The CDF and the D0 collaborations have set upper limits on the cross section for that process in Run I [2, 3] and improved those results in Run II [4, 5]. Single-top quark production is one of the major interests in Run II of the Tevatron as it offers several ways to test the Standard Model and to search for potential physics beyond the Standard Model. The measurement of the cross section of singly produced top quarks via the electroweak interaction offers the possibility to determine the Cabbibo-Kobayashi-Maskawa (CKM) matrix element V{sub tb} directly. The CKM matrix defines the transformation from the eigenstates of the electroweak interactions to the mass eigenstates of the quarks. V{sub tb} gives the strength of the coupling at the Wtb vertex. The single-top quark is produced at this vertex and therefore the cross section of the single-top quark production is directly proportional to |V{sub tb}|{sup 2}. In the Standard Model, three generations of quarks and the unitarity of the CKM matrix are predicted. This leads to V{sub tb} {approx} 1. Up to now, there is no possibility to measure V{sub tb} without using the assumption that there are a certain number of quark generations. Since the measurement of the cross section of single-top quark production is independent of this assumption it could verify another prediction of the Standard Model or give hints towards physics beyond the Standard Model such as a fourth generation of quarks. In addition, electroweak single-top quark production is an important background for the Higgs boson search in the mass range of 90 GeV/c{sup 2} to 130 GeV/c{sup 2} at the Tevatron in the WH channel. Two single-top quark production modes are dominant at the Tevatron, the t-channel or W-gluon fusion and the s-channel or W* process. Since it is challenging to separate the signal from the various background events we use a neural network to combine several variables into one powerful discriminant. The simulated Monte Carlo sample outputs of the neural networks are used as templates for a likelihood fit to the outputs of the neural networks of the data. In this thesis CDF II data corresponding to an integrated luminosity of 695 pb{sup -1} is discussed. As this analysis yields no significant evidence of electroweak single-top production it is not possible to measure any cross sections. Consequently we determine upper limits on the cross sections of the t- and s-channel production separately and combined.

  5. Search for the neutral MSSM Higgs bosons in the ditau decay channels at CDF Run II

    SciTech Connect (OSTI)

    Cuenca Almenar, Cristobal; /Valencia U., IFIC

    2008-04-01

    This thesis presents the results on a search for the neutral MSSM Higgs bosons decaying to tau pairs, with least one of these taus decays leptonically. The search was performed with a sample of 1.8 fb{sup -1} of proton-antiproton collisions at {radical}s = 1.96 TeV provided by the Tevatron and collected by CDF Run II. No significant excess over the Standard Model prediction was found and a 95% confidence level exclusion limit have been set on the cross section times branching ratio as a function of the Higgs boson mass. This limit has been translated into the MSSM Higgs sector parameter plane, tan{beta} vs. M{sub A}, for the four different benchmark scenarios.

  6. Precise measurement of the $W$-boson mass with the CDF II detector

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2012-03-01

    We have measured the W-boson mass M{sub W} using data corresponding to 2.2 fb{sup -1} of integrated luminosity collected in p{bar p} collisions at {radical}s = 1.96 TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470 126 W {yields} e{nu} candidates and 624 708 W {yields} {mu}{nu} candidates yield the measurement M{sub W} = 80 387 {+-} 12{sub stat} {+-} 15{sub syst} = 80 387 {+-} 19 MeV/c{sup 2}. This is the most precise measurement of the W-boson mass to date and significantly exceeds the precision of all previous measurements combined.

  7. Search for anomalous production of multiple leptons in association with $W$ and $Z$ bosons at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2012-02-01

    This paper presents a search for anomalous production of multiple low-energy leptons in association with a W or Z boson using events collected at the CDF experiment corresponding to 5.1 fb{sup -1} of integrated luminosity. This search is sensitive to a wide range of topologies with low-momentum leptons, including those with the leptons near one another. The observed rates of production of additional electrons and muons are compared with the standard model predictions. No indications of phenomena beyond the standard model are found. A 95% confidence level limit is presented on the production cross section for a benchmark model of supersymmetric hidden-valley Higgs production. Particle identification efficiencies are also provided to enable the calculation of limits on additional models.

  8. Search for Randall-Sundrum Gravitons in the Diphoton Channel at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Apresyan, A.; Arisawa, T.; /Waseda U. /Dubna, JINR

    2010-12-01

    We report on a search for new particles in the diphoton channel using a data sample of p{bar p} collisions at {radical}s = 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 5.4 fb{sup -1}. The diphoton invariant mass spectrum of the data agrees well with the standard model expectation. We set upper limits on the production cross section times branching ratio for the Randall-Sundrum graviton, as a function of diphoton mass. We subsequently derive lower limits on the graviton mass of 482 GeV/c{sup 2} and 975 GeV/c{sup 2}, at the 95% confidence level, for coupling parameters (k/{bar M}{sub Pl}) of 0.01 and 0.1 respectively.

  9. Search for a Higgs Boson Decaying to Two W Bosons at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Akimoto, T.; Albrow, Michael G.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, Dante E.; Anastassov, A.; Annovi, Alberto; Antos, J.; Apollinari, G.; /Fermilab /Purdue U.

    2008-09-01

    We present a search for a Higgs boson decaying to two W bosons in p{bar p} collisions at {radical}s = 1.96 TeV center-of-mass energy. The data sample corresponds to an integrated luminosity of 3.0 fb{sup -1} collected with the CDF II detector. We find no evidence for production of a Higgs boson with mass between 110 and 200 GeV/c{sup 2}, and determine upper limits on the production cross section. For the mass of 160 GeV/c{sup 2}, where the analysis is most sensitive, the observed (expected) limit is 0.7 pb (0.9 pb) at 95% Bayesian credibility level which is 1.7 (2.2) times the standard model cross section.

  10. Global Search for New Physics with 2.0 fb88-1 at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Akimoto, T.; Albrow, Michael G.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, Dante E.; Anastassov, A.; Annovi, Alberto; Antos, J.; Apollinari, G.; /Fermilab /Purdue U.

    2008-09-01

    Data collected in Run II of the Fermilab Tevatron are searched for indications of new electroweak-scale physics. Rather than focusing on particular new physics scenarios, CDF data are analyzed for discrepancies with the standard model prediction. A model-independent approach (VISTA) considers gross features of the data, and is sensitive to new large cross-section physics. Further sensitivity to new physics is provided by two additional algorithms: a Bump Hunter searches invariant mass distributions for 'bumps' that could indicate resonant production of new particles; and the Sleuth procedure scans for data excesses at large summed transverse momentum. This combined global search for new physics in 2.0 fb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV reveals no indication of physics beyond the standard model.

  11. Measurement of the Top Quark Mass in the All-Hadronic Mode at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2011-12-01

    A measurement of the top quark mass (M{sub top}) in the all-hadronic decay channel is presented. It uses 5.8 fb{sup -1} of p{bar p} data collected with the CDF II detector at the Fermilab Tevatron Collider. Events with six to eight jets are selected by a neural network algorithm and by the requirement that at least one of the jets is tagged as a b quark jet. The measurement is performed with a likelihood fit technique, which simultaneously determines M{sub top} and the jet energy scale (JES) calibration. The fit yields a value of M{sub top} = 172.5 {+-} 1.4 (stat) {+-} 1.0 (JES) {+-} 1.1 (syst) GeV/c{sup 2}.

  12. Precision measurement of the top quark mass from dilepton events at CDF II

    SciTech Connect (OSTI)

    Abulencia, A.; Adelman, J.; Affolder, T.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; Annovi, A.; /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara

    2006-12-01

    We report a measurement of the top quark mass, M{sub t}, in the dilepton decay channel of t{bar t} {yields} b{ell}{prime}{sup +} {nu}{sub {ell}}, {bar b}{ell}{sup -}{bar {nu}}{sub {ell}} using an integrated luminosity of 1.0 fb{sup -1} of p{bar p} collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M{sub t} = 164.5 {+-} 3.9(stat.) {+-} 3.9(syst.) GeV/c{sup 2}, the most precise measurement of M{sub t} in the dilepton channel.

  13. Search for CP Violation in B0s to J/psi phi at CDF

    E-Print Network [OSTI]

    Chunlei Liu

    2008-07-30

    The CKM mechanism is well established as the dominant mechanism for $CP$ violation, which was first discovered in the neutral kaons in 1964 \\cite{ref:cpkaon}. To search for new sources of CP violation, one can exploit a handful of systems in which the standard model makes a precise prediction of CP violation. In the $B^0_s\\to J/\\psi \\phi$ system, CP violation in the interference of mixing and decay is precisely predicted in the standard model, the prediction being very close to zero. The CDF experiment reconstructs about 2000 signal events in 1.35 fb$^{-1}$ of luminosity. We obtain a confidence region in the space of the parameters $\\beta_s$, the CP phase, and $\\Delta\\Gamma$, the width difference. This result is 1.5 $\\sigma$ from the standard model prediction.

  14. Combination of CDF and D0 W-Boson mass measurements

    E-Print Network [OSTI]

    Baringer, Philip S.; Bean, Alice; Chen, G.; Clutter, Justace Randall; Sekaric, Jadranka; Wilson, Graham Wallace; Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Agnew, J. P.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Amerio, S.

    2013-09-23

    Combination of CDF and D0W-Boson mass measurements T. Aaltonen,21,a V.M. Abazov,13,b B. Abbott,116,b B. S. Acharya,81,b M. Adams,98,b T. Adams,97,b J. P. Agnew,94,b G.D. Alexeev,13,b G. Alkhazov,89,b A. Alton,32,b,ll S. Amerio,40b,40a,a D. Amidei,32...,a A. Anastassov,15,a,y A. Annovi,17,a J. Antos,12,a G. Apollinari,15,a J. A. Appel,15,a T. Arisawa,53,a A. Artikov,13,a J. Asaadi,48,a W. Ashmanskas,15,a A. Askew,97,b S. Atkins,106,b B. Auerbach,2,a K. Augsten,63,b A. Aurisano,48,a C. Avila,61,b F...

  15. Search for the Standard Model Higgs Boson Decaying to a bb? Pair in Events with Two Oppositely Charged Leptons Using the Full CDF Data Set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present a search for the standard model Higgs boson produced in association with a Z boson in data collected with the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.45??fb[superscript ...

  16. Search for a Higgs boson in the diphoton final state using the full CDF data set from pp? collisions at ?s = 1.96 TeV

    E-Print Network [OSTI]

    CDF Collaboration

    A search for a narrow Higgs boson resonance in the diphoton mass spectrum is presented based on data corresponding to 10 fb[superscript ?1] of integrated luminosity collected by the CDF experiment from proton–antiproton ...

  17. Updated search for the standard model Higgs boson in events with jets and missing transverse energy using the full CDF data set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present an updated search for the Higgs boson produced in association with a vector boson in the final state with missing transverse energy and two jets. We use the full CDF data set corresponding to an integrated ...

  18. A Measurement of the Mass of the Top Quark in Lepton + Jets Events at CDF

    SciTech Connect (OSTI)

    Brubaker, Erik Matthews

    2004-12-01

    This document presents a measurement of the top quark mass using the CDF run II detector at Fermilab. Colliding beams of protons and anti-protons at Fermilab's Tevatron ({radical}s = 1.96 TeV) produce top/anti-top pairs, which decay to W{sup +}W{sup -} b{bar b}; events are selected where one W decays hadronically, and one W decays to either e or {mu} plus a neutrino. The data sample was collected between March 2002 and September 2003, and corresponds to an integrated luminosity of approximately 162 pb{sup -1}. Thirty-seven candidate t{bar t} events are found with at least one b jet identified by its displaced vertex. In each event, the best fit top quark invariant mass is determined by minimizing a {chi}{sup 2} for the overconstrained kinematic system. A likelihood fit of the reconstructed masses in the data sample to distributions from simulated signal and background events gives a top mass of 174.9{sub -7.7}{sup +7.1}(stat.) {+-} 6.5(syst.) GeV/c{sup 2}. The dominant systematic error is due to uncertainties in the jet energy measurements.

  19. Top-quark mass measurement using events with missing transverse energy and jets at CDF

    SciTech Connect (OSTI)

    Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Anastassov, A; Amidei, D; Antos, J; Annovi, A

    2013-07-01

    We present a measurement of the top-quark mass with tt? events using a data sample corresponding to an integrated luminosity of 5.7 fb -1 of pp? collisions at the Fermilab Tevatron with ?s = 1.96 TeV and collected by the CDF II Detector. We select events having no identified charged leptons, large missing transverse energy, and four, five, or six jets with at least one jet containing a secondary vertex consistent with the decay of a b quark. This analysis considers events from the semileptonic tt? decay channel, including events that contain tau leptons, which are usually not included in the top-quark mass measurements. The measurement uses as kinematic variables the invariant mass of two jets consistent with the mass of the W boson, and the invariant masses of two different three-jet combinations. We fit the data to signal templates of varying top-quark masses and background templates, and measure a top-quark mass of Mtop = 172.3 ± 2.4 (stat) ± 1.0 (syst) GeV/c2.

  20. Combination of CDF and D0 measurements of the $W$ boson helicity in top quark decays

    SciTech Connect (OSTI)

    Aaltonen, T.; Abazov, V.M.; Abbott, B.; Acharya, B.S.; Adams, M.; Adams, T.; Alexeev, G.D.; Alkhazov, G.; Alton, A.; Alvarez Gonzalez, B.; Alverson, G.; /Northeastern U. /INFN, Padua

    2012-02-01

    We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of 2.7-5.4 fb{sup -1} of p{bar p} collisions collected during Run II of the Fermilab Tevatron Collider. Combining measurements that simultaneously determine the fractions of W bosons with longitudinal (f{sub 0}) and right-handed (f{sub +}) helicities, we find f{sub 0} = 0.722 {+-} 0.081 [{+-} 0.062 (stat.) {+-} 0.052 (syst.)] and f{sub +} = -0.033 {+-} 0.046 [{+-} 0.034 (stat.) {+-} 0.031 (syst.)]. Combining measurements where one of the helicity fractions is fixed to the value expected in the standard model, we find f{sub 0} = 0.682 {+-} 0.057 [{+-} 0.035 (stat.) {+-} 0.046 (syst.)] and f{sub +} = ?0.015 {+-} 0.035 [{+-} 0.018 (stat.) {+-} 0.030 (syst.)]. The results are consistent with standard model expectations.

  1. A Direct Top-Quark Width Measurement from Lepton + Jets Events at CDF II

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Apresyan, A.; Arisawa, T.; /Waseda U. /Dubna, JINR

    2010-08-01

    We present a measurement of the top-quark width using t{bar t} events produced in p{bar p} collisions at Fermilab's Tevatron collider and collected by the CDF II detector. In the mode where the top quark decays to a W boson and a bottom quark, we select events in which one W decays leptonically and the other hadronically (lepton + jets channel) . From a data sample corresponding to 4.3 fb{sup -1} of integrated luminosity, we identify 756 candidate events. The top-quark mass and the mass of W boson that decays hadronically are reconstructed for each event and compared with templates of different top-quark widths ({Lambda}{sub t}) and deviations from nominal jet energy scale ({Delta}{sub JES}) to perform a simultaneous fit for both parameters, where {Delta}{sub JES} is used for the in situ calibration of the jet energy scale. By applying a Feldman-Cousins approach, we establish an upper limit at 95% confidence level (CL) of {Lambda}{sub t} < 7.6 GeV and a two-sided 68% CL interval of 0.3 GeV < {Lambda}{sub t} < 4.4 GeV for a top-quark mass of 172.5 GeV/c{sup 2}, which are consistant with the standard model prediction. This is the first direct measurement of {Lambda}{sub t} to set a lower limit with 68% CL.

  2. Weak-triplet, color-octet scalars and the CDF dijet excess

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Dobrescu, Bogdan A.; Krnjaic, Gordan Z.

    2012-04-24

    We extend the standard model to include a weak-triplet and color-octet scalar. This 'octo-triplet' field consists of three particles, two charged and one neutral, whose masses and renormalizable interactions depend only on two new parameters. The charged octo-triplet decay into a W boson and a gluon is suppressed by a loop factor and an accidental cancellation. Thus, the main decays of the charged octo-triplet may occur through higher-dimensional operators, mediated by a heavy vectorlike fermion, into quark pairs. For an octo-triplet mass below the tb? threshold, the decay into Wb b? through an off-shell top quark has a width comparablemore »to that into cs? or cb?. Pair production with one octo-triplet decaying to two jets and the other decaying to a W and two soft b jets may explain the dijet-plus-W excess reported by the CDF Collaboration. The same higher-dimensional operators lead to CP violation in Bs-B?s mixing.« less

  3. Search for Resonances Decaying to Top and Bottom Quarks with the CDF Experiment

    E-Print Network [OSTI]

    CDF Collaboration; T. Aaltonen; S. Amerio; D. Amidei; A. Anastassov; A. Annovi; J. Antos; F. Anza'; G. Apollinari; J. A. Appel; T. Arisawa; A. Artikov; J. Asaadi; W. Ashmanskas; B. Auerbach; A. Aurisano; F. Azfar; W. Badgett; T. Bae; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; P. Barria; P. Bartos; M. Bauce; F. Bedeschi; S. Behari; G. Bellettini; J. Bellinger; D. Benjamin; A. Beretvas; A. Bhatti; L. Bianchi; K. R. Bland; B. Blumenfeld; A. Bocci; A. Bodek; D. Bortoletto; J. Boudreau; A. Boveia; L. Brigliadori; C. Bromberg; E. Brucken; J. Budagov; H. S. Budd; K. Burkett; G. Busetto; P. Bussey; P. Butti; A. Buzatu; A. Calamba; S. Camarda; M. Campanelli; F. Canelli; B. Carls; D. Carlsmith; R. Carosi; S. Carrillo; B. Casal; M. Casarsa; A. Castro; P. Catastini; D. Cauz; V. Cavaliere; A. Cerri; L. Cerrito; Y. C. Chen; M. Chertok; G. Chiarelli; G. Chlachidze; K. Cho; D. Chokheli; A. Clark; C. Clarke; M. E. Convery; J. Conway; M. Corbo; M. Cordelli; C. A. Cox; D. J. Cox; M. Cremonesi; D. Cruz; J. Cuevas; R. Culbertson; N. d'Ascenzo; M. Datta; P. de Barbaro; L. Demortier; L. Marchese; M. Deninno; F. Devoto; M. D'Errico; A. Di Canto; B. Di Ruzza; J. R. Dittmann; M. D'Onofrio; S. Donati; M. Dorigo; A. Driutti; K. Ebina; R. Edgar; A. Elagin; R. Erbacher; S. Errede; B. Esham; S. Farrington; J. P. Fernández Ramos; R. Field; G. Flanagan; R. Forrest; M. Franklin; J. C. Freeman; H. Frisch; Y. Funakoshi; C. Galloni; A. F. Garfinkel; P. Garosi; H. Gerberich; E. Gerchtein; S. Giagu; V. Giakoumopoulou; K. Gibson; C. M. Ginsburg; N. Giokaris; P. Giromini; V. Glagolev; D. Glenzinski; M. Gold; D. Goldin; A. Golossanov; G. Gomez; G. Gomez-Ceballos; M. Goncharov; O. González López; I. Gorelov; A. T. Goshaw; K. Goulianos; E. Gramellini; C. Grosso-Pilcher; R. C. Group; J. Guimaraes da Costa; S. R. Hahn; J. Y. Han; F. Happacher; K. Hara; M. Hare; R. F. Harr; T. Harrington-Taber; K. Hatakeyama; C. Hays; J. Heinrich; M. Herndon; A. Hocker; Z. Hong; W. Hopkins; S. Hou; R. E. Hughes; U. Husemann; M. Hussein; J. Huston; G. Introzzi; M. Iori; A. Ivanov; E. James; D. Jang; B. Jayatilaka; E. J. Jeon; S. Jindariani; M. Jones; K. K. Joo; S. Y. Jun; T. R. Junk; M. Kambeitz; T. Kamon; P. E. Karchin; A. Kasmi; Y. Kato; W. Ketchum; J. Keung; B. Kilminster; D. H. Kim; H. S. Kim; J. E. Kim; M. J. Kim; S. B. Kim; S. H. Kim; Y. K. Kim; Y. J. Kim; N. Kimura; M. Kirby; K. Knoepfel; K. Kondo; D. J. Kong; J. Konigsberg; A. V. Kotwal; M. Kreps; J. Kroll; M. Kruse; T. Kuhr; M. Kurata; A. T. Laasanen; S. Lammel; M. Lancaster; K. Lannon; G. Latino; H. S. Lee; J. S. Lee; S. Leo; S. Leone; J. D. Lewis; A. Limosani; E. Lipeles; A. Lister; H. Liu; Q. Liu; T. Liu; S. Lockwitz; A. Loginov; A. Lucà; D. Lucchesi; J. Lueck; P. Lujan; P. Lukens; G. Lungu; J. Lys; R. Lysak; R. Madrak; P. Maestro; S. Malik; G. Manca; A. Manousakis-Katsikakis; F. Margaroli; P. Marino; K. Matera; M. E. Mattson; A. Mazzacane; P. Mazzanti; R. McNulty; A. Mehta; P. Mehtala; C. Mesropian; T. Miao; D. Mietlicki; A. Mitra; H. Miyake; S. Moed; N. Moggi; C. S. Moon; R. Moore; M. J. Morello; A. Mukherjee; Th. Muller; P. Murat; M. Mussini; J. Nachtman; Y. Nagai; J. Naganoma; I. Nakano; A. Napier; J. Nett; C. Neu; T. Nigmanov; L. Nodulman; S. Y. Noh; O. Norniella; L. Oakes; S. H. Oh; Y. D. Oh; I. Oksuzian; T. Okusawa; R. Orava; L. Ortolan; C. Pagliarone; E. Palencia; P. Palni; V. Papadimitriou; W. Parker; G. Pauletta; M. Paulini; C. Paus; T. J. Phillips; G. Piacentino; E. Pianori; J. Pilot; K. Pitts; C. Plager; L. Pondrom; S. Poprocki; K. Potamianos; F. Prokoshin; A. Pranko; F. Ptohos; G. Punzi; I. Redondo Fernández; P. Renton; M. Rescigno; F. Rimondi; L. Ristori; A. Robson; T. Rodriguez; S. Rolli; M. Ronzani; R. Roser; J. L. Rosner; F. Ruffini; A. Ruiz; J. Russ; V. Rusu; W. K. Sakumoto; Y. Sakurai; L. Santi; K. Sato; V. Saveliev; A. Savoy-Navarro; P. Schlabach; E. E. Schmidt; T. Schwarz; L. Scodellaro; F. Scuri; S. Seidel; Y. Seiya; A. Semenov; F. Sforza; S. Z. Shalhout; T. Shears; P. F. Shepard; M. Shimojima; M. Shochet; I. Shreyber-Tecker; A. Simonenko; K. Sliwa; J. R. Smith; F. D. Snider; V. Sorin; H. Song; M. Stancari; R. St. Denis; D. Stentz; J. Strologas; Y. Sudo; A. Sukhanov; I. Suslov; K. Takemasa; Y. Takeuchi; J. Tang; M. Tecchio; P. K. Teng; J. Thom; E. Thomson; V. Thukral; D. Toback; S. Tokar; K. Tollefson; T. Tomura; D. Tonelli; S. Torre; D. Torretta; P. Totaro; M. Trovato; F. Ukegawa; S. Uozumi; F. Vázquez; G. Velev; C. Vellidis; C. Vernieri; M. Vidal; R. Vilar; J. Vizán; M. Vogel; G. Volpi; P. Wagner; R. Wallny; S. M. Wang; D. Waters; W. C. Wester III; D. Whiteson; A. B. Wicklund; S. Wilbur; H. H. Williams; J. S. Wilson; P. Wilson; B. L. Winer; P. Wittich; S. Wolbers; H. Wolfe; T. Wright; X. Wu; Z. Wu; K. Yamamoto; D. Yamato; T. Yang; U. K. Yang; Y. C. Yang; W. -M. Yao; G. P. Yeh; K. Yi; J. Yoh; K. Yorita; T. Yoshida; G. B. Yu; I. Yu; A. M. Zanetti; Y. Zeng; C. Zhou; S. Zucchelli

    2015-04-07

    We report on a search for charged massive resonances decaying to top ($t$) and bottom ($b$) quarks in the full data set of proton-antiproton collisions at center-of-mass energy of $\\sqrt{s} = 1.96$ TeV collected by the CDF~II detector at the Tevatron, corresponding to an integrated luminosity of 9.5 $fb^{-1}$. No significant excess above the standard model (SM) background prediction is observed. We set 95% Bayesian credibility mass-dependent upper limits on the heavy charged particle production cross section times branching ratio to $t b$. Using a SM extension with a $W^{\\prime}$ and left-right-symmetric couplings as a benchmark model, we constrain the $W^{\\prime}$ mass and couplings in the 300 to 900 GeV/$c^2$ range. The limits presented here are the most stringent for a charged resonance with mass in the range 300 -- 600 GeV/$c^2$ decaying to top and bottom quarks.

  4. Top quark mass measurement from dilepton events at CDF II with the matrix-element method

    SciTech Connect (OSTI)

    Abulencia, A.; Acosta, D.; Adelman, Jahred A.; Affolder, T.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara

    2006-05-01

    We describe a measurement of the top quark mass using events with two charged leptons collected by the CDF II detector from p{bar p} collisions with {radical}s = 1.96 TeV at the Fermilab Tevatron. The likelihood in top mass is calculated for each event by convoluting the leading order matrix element describing q{bar q} {yields} t{bar t} {yields} b{ell}{nu}{sub {ell}}{bar b}{ell}{prime} {nu}{sub {ell}}, with detector resolution functions. The presence of background events in the data sample is modeled using similar calculations involving the matrix elements for major background processes. In a data sample with integrated luminosity of 340 pb{sup -1}, we observe 33 candidate events and measure M{sub top} = 165.2 {+-} 6.1(stat.) {+-} 3.4(syst.) GeV/c{sup 2}. This measurement represents the first application of this method to events with two charged leptons and is the most precise single measurement of the top quark mass in this channel.

  5. Search for Standard Model Higgs Boson Production in Association with a W Boson at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Akimoto, T.; Albrow, M.G.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; /Fermilab

    2008-03-01

    We present a search for standard model Higgs boson production in association with a W boson in proton-antiproton collisions (p{bar p} {yields} W{sup {+-}}H {yields} {ell}{nu}b{bar b}) at a center of mass energy of 1.96 TeV. The search employs data collected with the CDF II detector which correspond to an integrated luminosity of approximately 1 fb{sup -1}. We select events consistent with a signature of a single lepton (e{sup {+-}}/{mu}{sup {+-}}), missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with a secondary vertex tagging method and a neural network filter technique. The observed number of events and the dijet mass distributions are consistent with the standard model background expectations, and we set 95% confidence level upper limits on the production cross section times branching ratio ranging from 3.9 to 1.3 pb for Higgs boson masses from 110 to 150 GeV/c{sup 2}, respectively.

  6. Top-quark mass measurement using events with missing transverse energy and jets at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Anastassov, A; Amidei, D; Antos, J; Annovi, A

    2013-07-01

    We present a measurement of the top-quark mass with tt? events using a data sample corresponding to an integrated luminosity of 5.7 fb -1 of pp? collisions at the Fermilab Tevatron with ?s = 1.96 TeV and collected by the CDF II Detector. We select events having no identified charged leptons, large missing transverse energy, and four, five, or six jets with at least one jet containing a secondary vertex consistent with the decay of a b quark. This analysis considers events from the semileptonic tt? decay channel, including events that contain tau leptons, which are usually not included in the top-quark mass measurements. The measurement uses as kinematic variables the invariant mass of two jets consistent with the mass of the W boson, and the invariant masses of two different three-jet combinations. We fit the data to signal templates of varying top-quark masses and background templates, and measure a top-quark mass of Mtop = 172.3 ± 2.4 (stat) ± 1.0 (syst) GeV/c2.

  7. Measurement of the W-boson helicity fractions in top-quark decays at CDF

    SciTech Connect (OSTI)

    Chwalek, Thorsten; /Karlsruhe U., EKP

    2007-05-01

    We present a measurement of the fractions F{sub 0} and F{sub +} of longitudinally polarized and right-handed W bosons in top-quark decays using data collected with the CDF II detector. The data set used in the analysis corresponds to an integrated luminosity of approximately 955 pb{sup -1}. We select t{bar t} candidate events with one lepton, at least four jets, and missing transverse energy. Our helicity measurement uses the decay angle {theta}*, which is defined as the angle between the momentum of the charged lepton in the W boson rest-frame and the W momentum in the top-quark rest-frame. The cos{theta}* distribution in the data is determined by full kinematic reconstruction of the t{bar t} candidates. We find F{sub 0}= 0.59 {+-} 0.12(stat){sup +0.07}{sub -0.06}(syst) and F{sub +}=-0.03 {+-} 0.06(stat){sup +0.04}{sub -0.03}(syst), which is consistent with the standard model prediction. We set an upper limit on the fraction of right-handed W bosons of F{sub +} {le} 0.10 at the 95% confidence level.

  8. Top-quark mass measurement using events with missing transverse energy and jets at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Anastassov, A; Amidei, D; Antos, J; Annovi, A

    2013-07-01

    We present a measurement of the top-quark mass with tt? events using a data sample corresponding to an integrated luminosity of 5.7 fb -1 of pp? collisions at the Fermilab Tevatron with ?s = 1.96 TeV and collected by the CDF II Detector. We select events having no identified charged leptons, large missing transverse energy, and four, five, or six jets with at least one jet containing a secondary vertex consistent with the decay of a b quark. This analysis considers events from the semileptonic tt? decay channel, including events that contain tau leptons, which are usually not included inmore »the top-quark mass measurements. The measurement uses as kinematic variables the invariant mass of two jets consistent with the mass of the W boson, and the invariant masses of two different three-jet combinations. We fit the data to signal templates of varying top-quark masses and background templates, and measure a top-quark mass of Mtop = 172.3 ± 2.4 (stat) ± 1.0 (syst) GeV/c2.« less

  9. Search for Resonances Decaying to Top and Bottom Quarks with the CDF Experiment

    E-Print Network [OSTI]

    Aaltonen, T; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Anza', F; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Auerbach, B; Aurisano, A; Azfar, F; Badgett, W; Bae, T; Barbaro-Galtieri, A; Barnes, V E; Barnett, B A; Barria, P; Bartos, P; Bauce, M; Bedeschi, F; Behari, S; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Bianchi, L; Bland, K R; Blumenfeld, B; Bocci, A; Bodek, A; Bortoletto, D; Boudreau, J; Boveia, A; Brigliadori, L; Bromberg, C; Brucken, E; Budagov, J; Budd, H S; Burkett, K; Busetto, G; Bussey, P; Butti, P; Buzatu, A; Calamba, A; Camarda, S; Campanelli, M; Canelli, F; Carls, B; Carlsmith, D; Carosi, R; Carrillo, S; Casal, B; Casarsa, M; Castro, A; Catastini, P; Cauz, D; Cavaliere, V; Cerri, A; Cerrito, L; Chen, Y C; Chertok, M; Chiarelli, G; Chlachidze, G; Cho, K; Chokheli, D; Clark, A; Clarke, C; Convery, M E; Conway, J; Corbo, M; Cordelli, M; Cox, C A; Cox, D J; Cremonesi, M; Cruz, D; Cuevas, J; Culbertson, R; d'Ascenzo, N; Datta, M; de Barbaro, P; Demortier, L; Marchese, L; Deninno, M; Devoto, F; D'Errico, M; Di Canto, A; Di Ruzza, B; Dittmann, J R; D'Onofrio, M; Donati, S; Dorigo, M; Driutti, A; Ebina, K; Edgar, R; Elagin, A; Erbacher, R; Errede, S; Esham, B; Farrington, S; Ramos, J P Fernández; Field, R; Flanagan, G; Forrest, R; Franklin, M; Freeman, J C; Frisch, H; Funakoshi, Y; Galloni, C; Garfinkel, A F; Garosi, P; Gerberich, H; Gerchtein, E; Giagu, S; Giakoumopoulou, V; Gibson, K; Ginsburg, C M; Giokaris, N; Giromini, P; Glagolev, V; Glenzinski, D; Gold, M; Goldin, D; Golossanov, A; Gomez, G; Gomez-Ceballos, G; Goncharov, M; López, O González; Gorelov, I; Goshaw, A T; Goulianos, K; Gramellini, E; Grosso-Pilcher, C; da Costa, J Guimaraes; Hahn, S R; Han, J Y; Happacher, F; Hara, K; Hare, M; Harr, R F; Harrington-Taber, T; Hatakeyama, K; Hays, C; Heinrich, J; Herndon, M; Hocker, A; Hong, Z; Hopkins, W; Hou, S; Hughes, R E; Husemann, U; Hussein, M; Huston, J; Introzzi, G; Iori, M; Ivanov, A; James, E; Jang, D; Jayatilaka, B; Jeon, E J; Jindariani, S; Jones, M; Joo, K K; Jun, S Y; Junk, T R; Kambeitz, M; Kamon, T; Karchin, P E; Kasmi, A; Kato, Y; Ketchum, W; Keung, J; Kilminster, B; Kim, D H; Kim, H S; Kim, J E; Kim, M J; Kim, S B; Kim, S H; Kim, Y K; Kim, Y J; Kimura, N; Kirby, M; Knoepfel, K; Kondo, K; Kong, D J; Konigsberg, J; Kotwal, A V; Kreps, M; Kroll, J; Kruse, M; Kuhr, T; Kurata, M; Laasanen, A T; Lammel, S; Lancaster, M; Lannon, K; Latino, G; Lee, H S; Lee, J S; Leo, S; Leone, S; Lewis, J D; Limosani, A; Lipeles, E; Lister, A; Liu, H; Liu, Q; Liu, T; Lockwitz, S; Loginov, A; Lucà, A; Lucchesi, D; Lueck, J; Lujan, P; Lukens, P; Lungu, G; Lys, J; Lysak, R; Madrak, R; Maestro, P; Malik, S; Manca, G; Manousakis-Katsikakis, A; Margaroli, F; Marino, P; Matera, K; Mattson, M E; Mazzacane, A; Mazzanti, P; McNulty, R; Mehta, A; Mehtala, P; Mesropian, C; Miao, T; Mietlicki, D; Mitra, A; Miyake, H; Moed, S; Moggi, N; Moon, C S; Moore, R; Morello, M J; Mukherjee, A; Muller, Th; Murat, P; Mussini, M; Nachtman, J; Nagai, Y; Naganoma, J; Nakano, I; Napier, A; Nett, J; Neu, C; Nigmanov, T; Nodulman, L; Noh, S Y; Norniella, O; Oakes, L; Oh, S H; Oh, Y D; Oksuzian, I; Okusawa, T; Orava, R; Ortolan, L; Pagliarone, C; Palencia, E; Palni, P; Papadimitriou, V; Parker, W; Pauletta, G; Paulini, M; Paus, C; Phillips, T J; Piacentino, G; Pianori, E; Pilot, J; Pitts, K; Plager, C; Pondrom, L; Poprocki, S; Potamianos, K; Prokoshin, F; Pranko, A; Ptohos, F; Punzi, G; Fernández, I Redondo; Renton, P; Rescigno, M; Rimondi, F; Ristori, L; Robson, A; Rodriguez, T; Rolli, S; Ronzani, M; Roser, R; Rosner, J L; Ruffini, F; Ruiz, A; Russ, J; Rusu, V; Sakumoto, W K; Sakurai, Y; Santi, L; Sato, K; Saveliev, V; Savoy-Navarro, A; Schlabach, P; Schmidt, E E; Schwarz, T; Scodellaro, L; Scuri, F; Seidel, S; Seiya, Y; Semenov, A; Sforza, F; Shalhout, S Z; Shears, T; Shepard, P F; Shimojima, M; Shochet, M; Shreyber-Tecker, I; Simonenko, A; Sliwa, K; Smith, J R; Snider, F D; Sorin, V; Song, H; Stancari, M; Denis, R St; Stentz, D; Strologas, J; Sudo, Y; Sukhanov, A; Suslov, I; Takemasa, K; Takeuchi, Y; Tang, J; Tecchio, M; Teng, P K; Thom, J; Thomson, E; Thukral, V; Toback, D; Tokar, S; Tollefson, K; Tomura, T; Tonelli, D; Torre, S; Torretta, D; Totaro, P; Trovato, M; Ukegawa, F; Uozumi, S; Vázquez, F; Velev, G; Vellidis, C; Vernieri, C; Vidal, M; Vilar, R; Vizán, J; Vogel, M; Volpi, G; Wagner, P; Wallny, R; Wang, S M; Waters, D; Wester, W C; Whiteson, D; Wicklund, A B; Wilbur, S; Williams, H H; Wilson, J S; Wilson, P; Winer, B L; Wittich, P; Wolbers, S; Wolfe, H; Wright, T; Wu, X; Wu, Z; Yamamoto, K; Yamato, D; Yang, T; Yang, U K; Yang, Y C; Yao, W -M; Yeh, G P; Yi, K; Yoh, J; Yorita, K; Yoshida, T; Yu, G B; Yu, I; Zanetti, A M; Zeng, Y; Zhou, C; Zucchelli, S

    2015-01-01

    We report on a search for charged massive resonances decaying to top ($t$) and bottom ($b$) quarks in the full data set of proton-antiproton collisions at center-of-mass energy of $\\sqrt{s} = 1.96$ TeV collected by the CDF~II detector at the Tevatron, corresponding to an integrated luminosity of 9.5 $fb^{-1}$. No significant excess above the standard model (SM) background prediction is observed. We set 95% Bayesian credibility mass-dependent upper limits on the heavy charged particle production cross section times branching ratio to $t b$. Using a SM extension with a $W^{\\prime}$ and left-right-symmetric couplings as a benchmark model, we constrain the $W^{\\prime}$ mass and couplings in the 300 to 900 GeV/$c^2$ range. The limits presented here are the most stringent for a charged resonance with mass in the range 300 -- 600 GeV/$c^2$ decaying to top and bottom quarks.

  10. Weak-triplet, color-octet scalars and the CDF dijet excess

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Dobrescu, Bogdan A.; Krnjaic, Gordan Z.

    2012-04-24

    We extend the standard model to include a weak-triplet and color-octet scalar. This 'octo-triplet' field consists of three particles, two charged and one neutral, whose masses and renormalizable interactions depend only on two new parameters. The charged octo-triplet decay into a W boson and a gluon is suppressed by a loop factor and an accidental cancellation. Thus, the main decays of the charged octo-triplet may occur through higher-dimensional operators, mediated by a heavy vectorlike fermion, into quark pairs. For an octo-triplet mass below the tb? threshold, the decay into Wb b? through an off-shell top quark has a width comparable to that into cs? or cb?. Pair production with one octo-triplet decaying to two jets and the other decaying to a W and two soft b jets may explain the dijet-plus-W excess reported by the CDF Collaboration. The same higher-dimensional operators lead to CP violation in Bs-B?s mixing.

  11. A Scientific Data Processing Framework for Time Series NetCDF Data

    SciTech Connect (OSTI)

    Gaustad, Krista L.; Shippert, Timothy R.; Ermold, Brian D.; Beus, Sherman J.; Daily, Jeffrey A.; Borsholm, Atle; Fox, Kevin M.

    2014-10-01

    ARM Data Integrator (ADI) is a framework to streamline the development of scientific algorithms that analyze time-series NetCDF data, and to improve the content and consistency of the output data products produced by these algorithms. ADI achieves these goals by automating the process of retrieving and preparing data for analysis, supporting the definition of output data products through a graphical interface, and providing a modular, flexible software development architecture. The input data, preprocessing, and output data specifications are defined through a graphical interface and stored in a database. ADI also includes a workflow for data integration, a library of software modules to support the workflow, and a source code generator that produces C, IDL and Python templates. Data preparation support includes automated retrieval of data from input files, merging the retrieved data into appropriately sized chunks, and transformation of the data onto a common coordinate system grid. Through the graphical interface, users can view the details of both their data products and those in the ARM catalog. The variable and attribute definitions of the existing data products can be used to build new output data products. In addition, the rules that make up the ARM archive’s data standards are laid on top of the view of the new data product providing the user with a visual cue indicating where their output violates an archive standard. The necessary configurations are stored in a database that is accessed by the ADI libraries. This paper discusses the ADI framework, its supporting components, and how ADI can significantly decrease the time and cost of implementing scientific algorithms while improving the ability of scientists to disseminate their results.

  12. Search for new physics in trilepton events and limits on the associated chargino-neutralino production at CDF

    E-Print Network [OSTI]

    Aaltonen, Timo Antero; Amidei, Dante E; Anastassov, Anton Iankov; Annovi, Alberto; Antos, Jaroslav; Apollinari, Giorgio; Appel, Jeffrey A; Arisawa, Tetsuo; Artikov, Akram Muzafarovich; Asaadi, Jonathan A; Ashmanskas, William Joseph; Auerbach, Benjamin; Aurisano, Adam J; Azfar, Farrukh A; Badgett, William Farris; Bae, Taegil; Barbaro-Galtieri, Angela; Barnes, Virgil E; Barnett, Bruce Arnold; Barria, Patrizia; Bartos, Pavol; Bauce, Matteo; Bedeschi, Franco; Behari, Satyajit; Bellettini, Giorgio; Bellinger, James Nugent; Benjamin, Douglas P; Beretvas, Andrew F; Bhatti, Anwar Ahmad; Bland, Karen Renee; Blumenfeld, Barry J; Bocci, Andrea; Bodek, Arie; Bortoletto, Daniela; Boudreau, Joseph Francis; Boveia, Antonio; Brigliadori, Luca; Bromberg, Carl Michael; Brucken, Erik; Budagov, Ioulian A; Budd, Howard Scott; Burkett, Kevin Alan; Busetto, Giovanni; Bussey, Peter John; Butti, Pierfrancesco; Buzatu, Adrian; Calamba, Aristotle; Camarda, Stefano; Campanelli, Mario; Canelli, Florencia; Carls, Benjamin; Carlsmith, Duncan L; Carosi, Roberto; Carrillo Moreno, Salvador; Casal Larana, Bruno; Casarsa, Massimo; Castro, Andrea; Catastini, Pierluigi; Cauz, Diego; Cavaliere, Viviana; Cavalli-Sforza, Matteo; Cerri, Alessandro; Cerrito, Lucio; Chen, Yen-Chu; Chertok, Maxwell Benjamin; Chiarelli, Giorgio; Chlachidze, Gouram; Cho, Kihyeon; Chokheli, Davit; Clark, Allan Geoffrey; Clarke, Christopher Joseph; Convery, Mary Elizabeth; Conway, John Stephen; Corbo, Matteo; Cordelli, Marco; Cox, Charles Alexander; Cox, David Jeremy; Cremonesi, Matteo; Cruz Alonso, Daniel; Cuevas Maestro, Javier; Culbertson, Raymond Lloyd; D'Ascenzo, Nicola; Datta, Mousumi; de Barbaro, Pawel; Demortier, Luc M; Deninno, Maria Maddalena; D'Errico, Maria; Devoto, Francesco; Di Canto, Angelo; Di Ruzza, Benedetto; Dittmann, Jay Richard; Donati, Simone; D'Onofrio, Monica; Dorigo, Mirco; Driutti, Anna; Ebina, Koji; Edgar, Ryan Christopher; Elagin, Andrey L; Erbacher, Robin D; Errede, Steven Michael; Esham, Benjamin; Farrington, Sinead Marie; Fernández Ramos, Juan Pablo; Field, Richard D; Flanagan, Gene U; Forrest, Robert David; Franklin, Melissa EB; Freeman, John Christian; Frisch, Henry J; Funakoshi, Yujiro; Galloni, Camilla; Garfinkel, Arthur F; Garosi, Paola; Gerberich, Heather Kay; Gerchtein, Elena A; Giagu, Stefano; Giakoumopoulou, Viktoria Athina; Gibson, Karen Ruth; Ginsburg, Camille Marie; Giokaris, Nikos D; Giromini, Paolo; Giurgiu, Gavril A; Glagolev, Vladimir; Glenzinski, Douglas Andrew; Gold, Michael S; Goldin, Daniel; Golossanov, Alexander; Gomez, Gervasio; Gomez-Ceballos, Guillelmo; Goncharov, Maxim T; González López, Oscar; Gorelov, Igor V; Goshaw, Alfred T; Goulianos, Konstantin A; Gramellini, Elena; Grinstein, Sebastian; Grosso-Pilcher, Carla; Group, Robert Craig; Guimaraes da Costa, Joao; Hahn, Stephen R; Han, Ji-Yeon; Happacher, Fabio; Hara, Kazuhiko; Hare, Matthew Frederick; Harr, Robert Francis; Harrington-Taber, Timothy; Hatakeyama, Kenichi; Hays, Christopher Paul; Heinrich, Joel G; Herndon, Matthew Fairbanks; Hocker, James Andrew; Hong, Ziqing; Hopkins, Walter Howard; Hou, Suen Ray; Hughes, Richard Edward; Husemann, Ulrich; Hussein, Mohammad; Huston, Joey Walter; Introzzi, Gianluca; Iori, Maurizio; Ivanov, Andrew Gennadievich; James, Eric B; Jang, Dongwook; Jayatilaka, Bodhitha Anjalike; Jeon, Eun-Ju; Jindariani, Sergo Robert; Jones, Matthew T; Joo, Kyung Kwang; Jun, Soon Yung; Junk, Thomas R; Kambeitz, Manuel; Kamon, Teruki; Karchin, Paul Edmund; Kasmi, Azeddine; Kato, Yukihiro; Ketchum, Wesley Robert; Keung, Justin Kien; Kilminster, Benjamin John; Kim, DongHee; Kim, Hyunsoo; Kim, Jieun; Kim, Min Jeong; Kim, Shin-Hong; Kim, Soo Bong; Kim, Young-Jin; Kim, Young-Kee; Kimura, Naoki; Kirby, Michael H; Knoepfel, Kyle James; Kondo, Kunitaka; Kong, Dae Jung; Konigsberg, Jacobo; Kotwal, Ashutosh Vijay; Kreps, Michal; Kroll, IJoseph; Kruse, Mark Charles; Kuhr, Thomas; Kurata, Masakazu; Laasanen, Alvin Toivo; Lammel, Stephan; Lancaster, Mark; Lannon, Kevin Patrick; Latino, Giuseppe; Lee, Hyun Su; Lee, Jaison; Leo, Sabato; Leone, Sandra; Lewis, Jonathan D; Limosani, Antonio; Lipeles, Elliot David; Lister, Alison; Liu, Hao; Liu, Qiuguang; Liu, Tiehui Ted; Lockwitz, Sarah E; Loginov, Andrey Borisovich; Lucchesi, Donatella; Lucà, Alessandra; Lueck, Jan; Lujan, Paul Joseph; Lukens, Patrick Thomas; Lungu, Gheorghe; Lys, Jeremy E; Lysak, Roman; Madrak, Robyn Leigh; Maestro, Paolo; Malik, Sarah Alam; Manca, Giulia; Manousakis-Katsikakis, Arkadios; Marchese, Luigi Marchese; Margaroli, Fabrizio

    2014-01-01

    We perform a search for new physics using final states consisting of three leptons and a large imbalance in transverse momentum resulting from proton-antiproton collisions at 1.96 TeV center-of-mass energy. We use data corresponding to 5.8 fb-1 of integrated luminosity recorded by the CDF II detector at the Tevatron collider. Our main objective is to investigate possible new low-momentum (down to 5 GeV/c) multi-leptonic final states not investigated by LHC experiments. Relative to previous CDF analyses, we expand the geometric and kinematic coverage of electrons and muons and utilize tau leptons that decay hadronically. Inclusion of tau leptons is particularly important for supersymmetry (SUSY) searches. The results are consistent with standard-model predictions. By optimizing our event selection to increase sensitivity to the minimal supergravity (mSUGRA) SUSY model, we set limits on the associated production of chargino and neutralino, the SUSY partners of the electroweak gauge bosons. We exclude cross sect...

  13. Searches for the Higgs boson decaying to W[superscript +]W[superscript -] ? ?[superscript +]??[superscript -][¯ over v] with the CDF II detector

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present a search for a standard model Higgs boson decaying to two W bosons that decay to leptons using the full data set collected with the CDF II detector in s? = 1.96??TeV p[¯ over p] collisions at the Fermilab Tevatron, ...

  14. Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present a measurement of the top-quark pair production cross section in proton-antiproton collisions at ?s = 1.96??TeV. The data were collected at the Fermilab Tevatron by the CDF II detector and correspond to an ...

  15. 10/28/14, 1:54 PMAbstract Print View Page 1 of 2http://www.abstractsonline.com/Plan/AbstractPrintView.aspx?mID=3527&sK...-50d3-406e-9abe-741db9e992b6&cKey=3bc280f8-7c03-49a3-a0c9-83da620cfb4d

    E-Print Network [OSTI]

    Shenoy, Krishna V.

    .abstractsonline.com/Plan/AbstractPrintView.aspx?mID=3527&sK...-50d3-406e-9abe-741db9e992b6&cKey=3bc280f8-7c03-49a3-a0c9-83da620cfb4d Print this Page.abstractsonline.com/Plan/AbstractPrintView.aspx?mID=3527&sK...-50d3-406e-9abe-741db9e992b6&cKey=3bc280f8-7c03-49a3-a0c9-83da620cfb4d tested

  16. Study of the production of the sigma b*+- with the CDF detector at the Tevatron

    SciTech Connect (OSTI)

    Calancha Paredes, Constantino; /Madrid, CIEMAT /Madrid U.

    2011-02-01

    The composition of matter is a topic in which the man has been interested throughout History. Since the introduction of the atom by Democritus in the 5th century BC until the establishment of the Standard Model, our successful theory that contains our current knowledge on the matter and their interactions, it has come a long way trying to solve this fundamental question. The efforts of many of the greatest minds to perform crucial experiments and develop theoretical models have helped to get deeper insight into the origin of the matter. Today we know that indivisible atoms postulated by Democritus are no longer true, and they are actually composed of a nucleus made of protons and neutrons (nucleons) with orbiting electrons through electromagnetic interactions. Also the nucleons are not fundamental particles but are composed of more fundamental ones called quarks. According to the present state of our knowledge, matter is composed of two types of particles: quarks and leptons. Leptons are believed to be fundamental particles and can occur freely in nature. Quarks are also fundamental particles, and there are no free in nature, but are confined to form hadrons. The hadrons may consist of a quark and an antiquark (mesons) or three quarks or three antiquarks (baryons). These quarks and leptons interact through the exchange of particles called bosons. Figure 1.1 summary the elementary particles in the Standard Model. Despite its enormous success we know that the Standard Model is incomplete. Some of the issues left unresolved by the Standard Model are the mechanism for electroweak symmetry breaking, the mass spectrum of the Standard Model or that the Universe is much more matter than antimatter. That means that it should exist a more general theory which include the Standard Model as a valid approximation for low energy. This more general theory must give answers to the previous unresolved questions. Accumulate more experimental information is crucial to get a deeper understanding of the Standard Model and its limitations. In particular, it is very important the measurement of those observables which they are not able to be calculated from theory by perturbation theory. Particle accelerators have played and play nowadays a major role for past and new physics discoverements and has been for many years the source of many precision measurements. Unprecedent discoveries have been made and are yet to come. These measurements allow to select the models that best fit the results and also they can be used as input for those models to get further predictions. Tevatron has been for many years the highest energy particle collider operational in the world. It is located in the high energy physics laboratory Fermilab in Batavia, in the State of Illinois (USA). Tevatron produce proton-antiproton collisions with an energy of 1.96 TeV at the center of the mass. This thesis is based on the data taken by the CDF II detector, one of the two multipurpose detectors located in the two interaction points at Tevatron. In this thesis a precise measurement of the mass and width of four heavy baryon states are performed. These states are described together by the symbol {Sigma}{sub b}{sup (*){+-}}. They are built by two light quarks and one heavy b quark as it is shown in Fig. 1.2. Baryons containing one bottom quark and two light quarks are described by Heavy Quark Effective Theories (HQET).

  17. Inclusive Search for Standard Model Higgs Boson Production in the WW Decay Channel using the CDF II Detector

    E-Print Network [OSTI]

    The CDF Collaboration; T. Aaltonen

    2010-02-17

    We present a search for standard model (SM) Higgs boson production using ppbar collision data at sqrt(s) = 1.96 TeV, collected with the CDF II detector and corresponding to an integrated luminosity of 4.8 fb-1. We search for Higgs bosons produced in all processes with a significant production rate and decaying to two W bosons. We find no evidence for SM Higgs boson production and place upper limits at the 95% confidence level on the SM production cross section (sigma(H)) for values of the Higgs boson mass (m_H) in the range from 110 to 200 GeV. These limits are the most stringent for m_H > 130 GeV and are 1.29 above the predicted value of sigma(H) for mH = 165 GeV.

  18. Search for the Production of Gluinos and Squarks with the CDF II Experiment at the Tevatron Collider

    SciTech Connect (OSTI)

    De Lorenzo, Gianluca

    2010-05-01

    This thesis reports on two searches for the production of squarks and gluinos, supersymmetric partners of the Standard Model (SM) quarks and gluons, using the CDF detector at the Tevatron {radical}s = 1.96 TeV p{bar p} collider. An inclusive search for squarks and gluinos pair production is performed in events with large E{sub T} and multiple jets in the final state, based on 2 fb{sup -1} of CDF Run II data. The analysis is performed within the framework of minimal supergravity (mSUGRA) and assumes R-parity conservation where sparticles are produced in pairs. The expected signal is characterized by the production of multiple jets of hadrons from the cascade decays of squarks and gluinos and large missing transverse energy E{sub T} from the lightest supersymmetric particles (LSP). The measurements are in good agreement with SM predictions for backgrounds. The results are translated into 95% confidence level (CL) upper limits on production cross sections and squark and gluino masses in a given mSUGRA scenario. An upper limit on the production cross section is placed in the range between 1 pb and 0.1 pb, depending on the gluino and squark masses considered. The result of the search is negative for gluino and squark masses up to 392 GeV/c{sup 2} in the region where gluino and squark masses are close to each other, gluino masses up to 280 GeV/c{sup 2} regardless of the squark mass, and gluino masses up to 423 GeV=c2 for squark masses below 378 GeV/c{sup 2}. These results are compatible with the latest limits on squark/gluino production obtained by the D0 Collaboration and considerably improve the previous exclusion limits from direct and indirect searches at LEP and the Tevatron. The inclusive search is then extended to a scenario where the pair production of sbottom squarks is dominant. The new search is performed in a generic MSSM scenario with R-parity conservation. A specific SUSY particle mass hierarchy is assumed such that the sbottom decays exclusively as {tilde b}{sub 1} {yields} b{sub {tilde {chi}}{sub 1}{sup 0}}. The expected signal for direct sbottom pair production is characterized by the presence of two jets of hadrons from the hadronization of the bottom quarks and E=T from the two LSPs in the final state. The events are selected with large E{sub T} and two energetic jets in the final state, and at least one jet is required to be associated with a b quark. The measurements are in good agreement with SM predictions for backgrounds. The results are translated into 95% CL exclusion limits on production cross sections and sbottom and neutralino masses in the given MSSM scenario. Cross sections down to 0.1 pb are excluded for the sbottom mass range considered. Sbottom masses up to 230 GeV/c{sup 2} are excluded at 95% CL for neutralino masses below 70 GeV/c{sup 2}. This analysis increases the previous CDF limit by more than 40 GeV/c{sup 2}. The sensitivity of both the inclusive and the exclusive search is dominated by systematic effects and the results of the two analyses can be considered as conclusive for CDF Run II. With the new energy frontier of the newly commissioned Large Hadron Collider in Geneva, the experience from Tevatron will be of crucial importance in the developing of effective strategies to search for SUSY in the next era of particle physics experiments.

  19. $W$ boson polarization measurement in the $t\\bar{t}$ dilepton channel using the CDF II Detector

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2012-05-01

    We present a measurement of W boson polarization in top-quark decays in t{bar t} events with decays to dilepton final states using 5.1 fb{sup -1} integrated luminosity in p{bar p} collisions collected by the CDF II detector at the Tevatron. A simultaneous measurement of the fractions of longitudinal (f{sub 0}) and right-handed (f{sub +}) W bosons yields the results f{sub 0} = 0.71{sub -0.17}{sup +0.18}(stat) {+-} 0.06(syst) and f{sub +} = -0.07 {+-} 0.09(stat) {+-} 0.03(syst). Combining this measurement with our previous result based on single lepton final states, we obtain f{sub 0} = 0.84 {+-} 0.09(stat) {+-} 0.05(syst) and f{sub +} = -0.16 {+-} 0.05(stat) {+-} 0.04(syst). The results are consistent with standard model expectation.

  20. Search for the Higgs boson in the all-hadronic final state using the CDF II detector

    E-Print Network [OSTI]

    CDF Collaboration

    2011-08-09

    We report on a search for the production of the Higgs boson decaying to two bottom quarks accompanied by two additional quarks. The data sample used corresponds to an integrated luminosity of approximately 4\\,\\invfb\\, of \\ppbar\\, collisions at $\\sqrt{s}=1.96$\\,TeV recorded by the CDF II experiment. This search includes twice the integrated luminosity of the previous published result, uses analysis techniques to distinguish jets originating from light flavor quarks and those from gluon radiation, and adds sensitivity to a Higgs boson produced by vector boson fusion. We find no evidence of the Higgs boson and place limits on the Higgs boson production cross section for Higgs boson masses between 100\\,\\gevcc\\, and 150\\,\\gevcc\\, at the 95% confidence level. For a Higgs boson mass of 120\\,\\gevcc\\, the observed (expected) limit is 10.5\\,(20.0) times the predicted Standard Model cross section.

  1. Measurement of the inclusive isolated prompt photon production cross section at the Tevatron using the CDF detector

    SciTech Connect (OSTI)

    Deluca Silberberg, Carolina; /Barcelona, IFAE

    2009-04-01

    In this thesis we present the measurement of the inclusive isolated prompt photon cross section with a total integrated luminosity of 2.5 fb{sup -1} of data collected with the CDF Run II detector at the Fermilab Tevatron Collider. The prompt photon cross section is a classic measurement to test perturbative QCD (pQCD) with potential to provide information on the parton distribution function (PDF), and sensitive to the presence of new physics at large photon transverse momentum. Prompt photons also constitute an irreducible background for important searches such as H {yields} {gamma}{gamma}, or SUSY and extra-dimensions with energetic photons in the final state. The Tevatron at Fermilab (Batavia, U.S.A.) is currently the hadron collider that operates at the highest energies in the world. It collides protons and antiprotons with a center-of-mass energy of 1.96 TeV. The CDF and the D0 experiments are located in two of its four interaction regions. In Run I at the Tevatron, the direct photon production cross section was measured by both CDF and DO, and first results in Run II have been presented by the DO Collaboration based on 380 pb{sup -1}. Both Run I and Run II results show agreement with the theoretical predictions except for the low p{sub T}{sup {gamma}} region, where the observed and predicted shapes are different. Prompt photon production has been also extensively measured at fixed-target experiments in lower p{sub T}{sup {gamma}} ranges, showing excess of data compared to the theory, particularly at high x{sub T}. From an experimental point of view, the study of the direct photon production has several advantages compared to QCD studies using jets. Electromagnetic calorimeters have better energy resolution than hadronic calorimeters, and the systematic uncertainty on the photon absolute energy scale is smaller. Furthermore, the determination of the photon kinematics does not require the use of jet algorithms. However, the measurements using photons require a good understanding of the background, mainly dominated by light mesons ({pi}{sup 0} and {eta}) which decay into two very collinear photons. Since these photons are produced within a jet, they tend to be non-isolated in most of the cases, and can be suppressed by requiring the photon candidates to be isolated in the calorimeter. In the case the hard scattered parton hadronizes leaving most of its energy to the meson, the photon produced in the decay will not be surrounded by large energy depositions. To further reduce this remaining isolated background, we present a new technique based on the isolation distribution in the calorimeter. The measured cross section is compared to next-to-leading order (NLO) pQCD calculations, which have been corrected for non-perturbative contributions. This thesis is organized as follows: we start with a brief review of QCD theory and the formalism to calculate cross sections in Chapter 2, where we also introduce the physics of prompt photon production and summarize the current status of the prompt photon phenomenology. Chapter 3 contains a description of the Tevatron and the CDF detector. The experimental measurement is described in Chapter 4, where we provide details on the different datasets used in the measurement, the trigger, and the event selection requirements. Most of this Chapter is devoted to the explanation of the background subtraction method and the determination of the photon signal fraction. The systematic uncertainties on the measurement are evaluated in Chapter 5, while Chapter 6 discusses the final results and the comparison to the theoretical predictions. Finally, the conclusions are presented in Chapter 7.

  2. Search for standard model Higgs boson production in association with a W boson using a matrix element technique at CDF in pp? collisions at ?s=1.96??TeV

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    This paper presents a search for standard model Higgs boson production in association with a W boson using events recorded by the CDF experiment in a data set corresponding to an integrated luminosity of 5.6??fb[superscript ...

  3. Combined CDF and D0 Searches for the Standard Model Higgs Boson Decaying to Two Photons with up to 8.2 fb^-1

    E-Print Network [OSTI]

    The CDF Collaboration; the D0 Collaboration; the Tevatron New Physics; Higgs Working Group

    2011-07-25

    We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in ppbar collisions at the Fermilab Tevatron at sqrt{s}=1.96 TeV, focusing on the decay H\\rightarrow\\gamma\\gamma. We compute upper limits on the Higgs boson production cross section times the decay branching fraction in the range 100Higgs boson. With datasets corresponding to 7.0 fb-1 (CDF) and 8.2 fb-1 (D0), the 95% C.L. upper limits on Higgs boson production is a factor of 10.5 times the SM cross section for a Higgs boson mass of 115 GeV/c^2.

  4. Central Michigan Theresa Abed (2008), Grand Ledge

    E-Print Network [OSTI]

    Riley, Shawn J.

    2008-01-01

    (1999), East Lansing John Daly III (1999), Flushing Thomas Darger (1995), Midland Brian Davis (2014 Arbor Andrew Doerr (2005), Lansing Ryan Earl (2011), Lansing Brian Elder (2009), Bay City Darren Elliott (Fall 1993), Dewitt Katheryn Elliott (2006), St. Johns Andrew Everman (2006), Flushing Michael Ezzo

  5. Constraints on models of the Higgs boson with exotic spin and parity using the full CDF data set

    E-Print Network [OSTI]

    T. Aaltonen; CDF Collaboration

    2015-01-23

    A search for particles with the same mass and couplings as those of the standard model Higgs boson but different spin and parity quantum numbers is presented. We test two specific non-standard Higgs boson hypotheses: a pseudoscalar Higgs boson with spin-parity $J^P$ = $0^-$ and a graviton-like Higgs boson with $J^P$ = $2^+$, assuming for both a mass of 125 GeV/$c^2$. We search for these exotic states produced in association with a vector boson and decaying into a bottom-antibottom quark pair. The vector boson is reconstructed through its decay into an electron or muon pair, or an electron or muon and a neutrino, or it is inferred from an imbalance in total transverse momentum. We use expected kinematic differences between events containing exotic Higgs bosons and those containing standard model Higgs bosons. The data were collected by the CDF experiment at the Tevatron proton-antiproton collider, operating at a center-of-mass energy of $\\sqrt{s}=1.96$ TeV, and correspond to an integrated luminosity of 9.45 fb$^{-1}$. We observe no significant deviations from the predictions of the standard model with a Higgs boson of mass 125 GeV/$c^2$, and set bounds on the possible rate of production of each exotic state.

  6. Search for Resonant Top-antitop Production in the Semi-leptonic Decay Mode Using the Full CDF Data Set

    E-Print Network [OSTI]

    Aaltonen, T; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Auerbach, B; Aurisano, A; Azfar, F; Badgett, W; Bae, T; Barbaro-Galtieri, A; Barnes, V E; Barnett, B A; Barria, P; Bartos, P; Bauce, M; Bedeschi, F; Behari, S; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Bland, K R; Blumenfeld, B; Bocci, A; Bodek, A; Bortoletto, D; Boudreau, J; Boveia, A; Brigliadori, L; Bromberg, C; Brucken, E; Budagov, J; Budd, H S; Burkett, K; Busetto, G; Bussey, P; Butti, P; Buzatu, A; Calamba, A; Camarda, S; Campanelli, M; Canelli, F; Carls, B; Carlsmith, D; Carosi, R; Carrillo, S; Casal, B; Casarsa, M; Castro, A; Catastini, P; Cauz, D; Cavaliere, V; Cavalli-Sforza, M; Cerri, A; Cerrito, L; Chen, Y C; Chertok, M; Chiarelli, G; Chlachidze, G; Chokheli, D; Cho, K; Clark, A; Clarke, C; Convery, M E; Conway, J; Corbo, M; Cordelli, M; Cox, C A; Cox, D J; Cremonesi, M; Cruz, D; Cuevas, J; Culbertson, R; d'Ascenzo, N; Datta, M; de Barbaro, P; Demortier, L; Deninno, M; d'Errico, M; Devoto, F; Di Canto, A; Di Ruzza, B; Dittmann, J R; Donati, S; D'Onofrio, M; Dorigo, M; Driutti, A; Ebina, K; Edgar, R; Elagin, A; Erbacher, R; Errede, S; Esham, B; Eusebi, R; Farrington, S; Fernandez Ramos, J P; Field, R; Flanagan, G; Forrest, R; Franklin, M; Freeman, J C; Frisch, H; Funakoshi, Y; Garfinkel, A F; Garosi, P; Gerberich, H; Gerchtein, E; Giagu, S; Giakoumopoulou, V; Gibson, K; Ginsburg, C M; Giokaris, N; Giromini, P; Giurgiu, G; Glagolev, V; Glenzinski, D; Goldin, D; Gold, M; Golossanov, A; Gomez-Ceballos, G; Gomez, G; Goncharov, M; Gonzalez Lopez, O; Gorelov, I; Goshaw, A T; Goulianos, K; Gramellini, E; Grinstein, S; Grosso-Pilcher, C; Group, R C; Guimaraes da Costa, J; Hahn, S R; Han, J Y; Happacher, F; Hara, K; Hare, M; Harrington-Taber, T; Harr, R F; Hatakeyama, K; Hays, C; Heinrich, J; Herndon, M; Hocker, A; Hong, Z; Hopkins, W; Hou, S; Hughes, R E; Husemann, U; Huston, J; Introzzi, G; Iori, M; Ivanov, A; James, E; Jang, D; Jayatilaka, B; Jeon, E J; Jindariani, S; Jones, M; Joo, K K; Junk, T R; Jun, S Y; Kambeitz, M; Kamon, T; Karchin, P E; Kasmi, A; Kato, Y; Ketchum, W; Keung, J; Kilminster, B; Kim, D H; Kim, H S; Kim, J E; Kim, M J; Kim, S B; Kim, S H; Kimura, N; Kim, Y J; Kim, Y K; Kirby, M; Knoepfel, K; Kondo, K; Kong, D J; Konigsberg, J; Kotwal, A V; Kreps, M; Kroll, J; Kruse, M; Kuhr, T; Kurata, M; Laasanen, A T; Lammel, S; Lancaster, M; Lannon, K; Latino, G; Lee, H S; Lee, J S; Leone, S; Lewis, J D; Limosani, A; Lipeles, E; Liu, H; Liu, Q; Liu, T; Lockwitz, S; Loginov, A; Lucchesi, D; Lueck, J; Lujan, P; Lukens, P; Lungu, G; Lysak, R; Lys, J; Madrak, R; Maestro, P; Malik, S; Manca, G; Manousakis-Katsikakis, A; Margaroli, F; Marino, P; Martinez, M; Matera, K; Mattson, M E; Mazzacane, A; Mazzanti, P; McNulty, R; Mehta, A; Mehtala, P; Mesropian, C; Miao, T; Mietlicki, D; Mitra, A; Miyake, H; Moed, S; Moggi, N; Moon, C S; Moore, R; Morello, M J; Mukherjee, A; Muller, Th; Murat, P; Mussini, M; Nachtman, J; Nagai, Y; Naganoma, J; Nakano, I; Napier, A; Nett, J; Neu, C; Nigmanov, T; Nodulman, L; Noh, S Y; Norniella, O; Oakes, L; Oh, S H; Oh, Y D; Oksuzian, I; Okusawa, T; Orava, R; Ortolan, L; Pagliarone, C; Palencia, E; Palni, P; Papadimitriou, V; Parker, W; Pauletta, G; Paulini, M; Paus, C; Phillips, T J; Piacentino, G; Pianori, E; Pilot, J; Pitts, K; Plager, C; Pondrom, L; Poprocki, S; Potamianos, K; Pranko, A; Prokoshin, F; Ptohos, F; Punzi, G; Ranjan, N; Redondo Fernandez, I; Renton, P; Rescigno, M; Riddick, T; Rimondi, F; Ristori, L; Robson, A; Rodriguez, T; Rolli, S; Ronzani, M; Roser, R; Rosner, J L; Ruffini, F; Ruiz, A; Russ, J; Rusu, V; Safonov, A; Sakumoto, W K; Sakurai, Y; Santi, L; Sato, K; Saveliev, V; Savoy-Navarro, A; Schlabach, P; Schmidt, E E; Schwarz, T; Scodellaro, L; Seidel, S; Seiya, Y; Semenov, A; Sforza, F; Shalhout, S Z; Shears, T; Shepard, P F; Shimojima, M; Shochet, M; Shreyber-Tecker, I; Simonenko, A; Sinervo, P; Sliwa, K; Smith, J R; Snider, F D; Song, H; Sorin, V; Stancari, M; St. Denis, R; Stelzer, B; Stelzer-Chilton, O; Stentz, D; Strologas, J; Sudo, Y; Sukhanov, A; Suslov, I; Takemasa, K; Takeuchi, Y; Tang, J; Tecchio, M; Teng, P K; Thom, J; Thomson, E; Thukral, V; Toback, D; Tokar, S; Tollefson, K; Tomura, T; Tonelli, D; Torre, S; Torretta, D; Totaro, P; Trovato, M; Ukegawa, F; Uozumi, S; Vazquez, F; Velev, G; Vellidis, C; Vernieri, C; Vidal, M; Vilar, R; Vizan, J; Vogel, M; Volpi, G; Wagner, P; Wallny, R; Wang, S M; Warburton, A; Waters, D; Wester, W C, III; Whiteson, D; Wicklund, A B; Wilbur, S; Williams, H H; Wilson, J S; Wilson, P; Winer, B L; Wittich, P; Wolbers, S; Wolfe, H; Wright, T; Wu, X; Wu, Z; Yamamoto, K; Yamato, D; Yang, T; Yang, U K; Yang, Y C; Yao, W M; Yeh, G P; Yi, K; Yoh, J; Yorita, K; Yoshida, T; Yu, G B; Yu, I; Zanetti, A M; Zeng, Y; Zhou, C; Zucchelli, S

    2013-01-01

    This Letter reports a search for a narrow resonant state decaying into two $W$ bosons and a bottom-antibottom quark pair where one $W$ boson decays leptonically and the other decays into a quark-antiquark pair. The search is particularly sensitive to top-antitop resonant production. We use the full data sample of proton-antiproton collisions at a center-of-mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, corresponding to an integrated luminosity of 9.45 fb$^{-1}$. No evidence for resonant production is found and upper limits on the production cross section times branching ratio for a narrow resonant state are extracted. Within a specific benchmark model, we exclude a $Z'$ boson with mass below 915 GeV/$c^2$ decaying into a top-antitop pair at the 95% credibility level assuming a $Z'$ boson decay width of $\\Gamma_{Z'} = 0.012 M_{Z'}$. This is the most sensitive search for a narrow $\\ensuremath{q\\bar{q}}$-initiated $\\ensuremath{t\\bar{t}}$ resonance in the mass region below 750 ...

  7. Search for Heavy, Long-Lived Neutralinos that Decay to Photons at CDF II Using Photon Timing

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Akimoto, T.; Albrow, M.G.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Aoki, M.; /Illinois U., Urbana /Fermilab

    2008-04-01

    The authors present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via {tilde {chi}}{sub 1}{sup 0} {yields} {gamma}{tilde G} in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570 {+-} 34 pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV, they select {gamma}+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. They find 2 events, consistent with the background estimate of 1.3 {+-} 0.7 events. While the search strategy does not rely on model-specific dynamics, they set cross section limits and place the world-best 95% C.L. lower limit on the {tilde {chi}}{sub 1}{sup 0} mass of 101 GeV/c{sup 2} at {tau}{sub {tilde {chi}}{sub 1}{sup 0}} = 5 ns.

  8. A Measurement of the Lifetime of the Lambda_b Baryon with the CDF Detector at the Tevatron Run II

    SciTech Connect (OSTI)

    Unverhau, Tatjana Alberta Hanna; /Glasgow U.

    2004-12-01

    In March 2001 the Tevatron accelerator entered its Run II phase, providing colliding proton and anti-proton beams with an unprecedented center-of-mass energy of 1.96 TeV. The Tevatron is currently the only accelerator to produce {Lambda}{sub b} baryons, which provides a unique opportunity to measure the properties of these particles. This thesis presents a measurement of the mean lifetime of the {Lambda}{sub b} baryon in the semileptonic channel {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +} {mu}{sup -} {bar {nu}}{sub {mu}}. In total 186 pb{sup -1} of data were used for this analysis, collected with the CDF detector between February 2002 and September 2003. To select the long-lived events from b-decays, the secondary vertex trigger was utilized. This significant addition to the trigger for Run II allows, for the first time, the selection of events with tracks displaced from the primary interaction vertex at the second trigger level. After the application of selection cuts this trigger sample contains approximately 991 {Lambda}{sub b} candidates. To extract the mean lifetime of {Lambda}{sub b} baryons from this sample, they transverse decay length of the candidates is fitted with an unbinned maximum likelihood fit under the consideration of the missing neutrino momentum and the bias introduced by the secondary vertex trigger. The mean lifetime of the {Lambda}{sub b} is measured to be {tau} = 1.29 {+-} 0.11(stat.) {+-} 0.07(syst.) ps equivalent to a mean decay length of c{tau} = 387 {+-} 33(stat.) {+-} 21 (syst.) {micro}m.

  9. Measurement of the CP-violating phase ?sJ/?? in Bs0?J/?? decays with the CDF II detector

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; et al

    2012-04-23

    We present a measurement of the CP-violating parameter ?sJ/?? using approximately 6500 B0s?J/?? decays reconstructed with the CDF II detector in a sample of pp? collisions at ?s=1.96 TeV corresponding to 5.2 fb?¹ integrated luminosity produced by the Tevatron collider at Fermilab. We find the CP-violating phase to be within the range ?sJ/??? [0.02,0.52]?[1.08,1.55] at 68% confidence level where the coverage property of the quoted interval is guaranteed using a frequentist statistical analysis. This result is in agreement with the standard model expectation at the level of about one Gaussian standard deviation. We consider the inclusion of a potential S-wavemore »contribution to the B0s?J/?K?K? final state which is found to be negligible over the mass interval 1.009sJ/??, we find the B0s decay width difference to be ??s=0.075±0.035(stat)±0.006(syst) ps?¹. We also present the most precise measurements of the B0s mean lifetime ?(B0s)=1.529±0.025(stat)±0.012(syst) ps, the polarization fractions |A0(0)|²=0.524±0.013(stat)±0.015(syst) and |A II (0)|²=0.231±0.014(stat)±0.015(syst), as well as the strong phase ??=2.95±0.64(stat)±0.07(syst) rad. In addition, we report an alternative Bayesian analysis that gives results consistent with the frequentist approach.« less

  10. Search for the Decays B0(s) ---> e+ mu- and B0(s) ---> e+ e- in CDF Run. II.

    SciTech Connect (OSTI)

    Aaltonen, T.; /Helsinki Inst. of Phys.; Adelman, J.; /Chicago U., EFI; Akimoto, T.; /Tsukuba U.; Alvarez Gonzalez, B.; /CSIC, Catalunya; Amerio, S.; /INFN, Padua; Amidei, D.; /Michigan U.; Anastassov, A.; /Northwestern U.; Annovi, A.; /Frascati; Antos, J.; /Comenius U.; Apollinari, G.; /Fermilab; Apresyan, A.; /Purdue U. /Waseda U.

    2009-01-01

    The authors report results from a search for the lepton flavor violating decays B{sub (s)}{sup 0} {yields} e{sup +}{mu}{sup -}, and the flavor-changing neutral-current decays B{sub (s)}{sup 0} {yields} e{sup +}e{sup -}. The analysis uses data corresponding to 2 fb{sup -1} of integrated luminosity of p{bar p} collisions at {radical}s = 1.96 TeV collected with the upgraded Collider Detector (CDF II) at the Fermilab Tevatron. The observed number of B{sub (s)}{sup 0} candidates is consistent with background expectations. The resulting bayesian upper limits on the branching ratios at 90% credibility level are {Beta}(B{sub s}{sup 0} {yields} e{sup +}{mu}{sup -}) < 2.0 x 10{sup -7}, {Beta}(B{sup 0} {yields} e{sup +}{mu}{sup -}) < 6.4 x 10{sup -8}, {Beta}(B{sub s}{sup 0} {yields} e{sup +}e{sup -}) < 2.8 x 10{sup -7} and {Beta}(B{sup 0} {yields} e{sup +}e{sup -}) < 8.3 x 10{sup -8}. From the limits on {Beta}(B{sub (s)}{sup 0} {yields} e{sup +}{mu}{sup -}), the following lower bounds on the Pati-Salam leptoquark masses are also derived: M{sub LQ}(B{sub s}{sup 0} {yields} e{sup +}{mu}{sup -}) > 47.8 TeV/c{sup 2}, and M{sub LQ}(B{sup 0} {yields} e{sup +}{mu}{sup -}) > 59.3 TeV/c{sup 2}, at 90% credibility level.

  11. Exotic physics: search for new physics leading to high mass tau pairs with ppbar collisions at 1.96 tev using cdf ii

    SciTech Connect (OSTI)

    Acosta, D.; The CDF Collaboration

    2005-06-14

    We present the results of a search for anomalous resonant production of tau lepton pairs with large invariant mass, the first such search using the CDF II Detector in Run II of the Tevatron p{bar p} collider. Such anomalous production could arise from various new physics processes. In a data sample corresponding to 195 pb{sup -1} of integrated luminosity we predict 2.8 {+-} 0.5 events from Standard Model background processes and observe 4. We use this result to set limits on the production of heavy scalar and vector particles decaying to tau lepton pairs.

  12. Combined CDF and D0 Upper Limits on Standard Model Higgs Boson Production with up to 8.2 fb-1 of Data

    E-Print Network [OSTI]

    The CDF; D0 Collaborations; the TEVNPHWG Working Group

    2011-08-16

    We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in p-pbar collisions at the Fermilab Tevatron at sqrt(s)=1.96 TeV. The results presented here include those channels which are most sensitive to Higgs bosons with mass between 130 and 200 GeV/c^2, namely searches targeted at Higgs boson decays to W+W-, although acceptance for decays into tau+tau- and gamma gamma is included. Compared to the previous Tevatron Higgs search combination, more data have been added and the analyses have been improved to gain sensitivity. We use the MSTW08 parton distribution functions and the latest gg to H theoretical cross section predictions when testing for the presence of a SM Higgs boson. With up to 7.1 fb-1 of data analyzed at CDF, and up to 8.2 fb-1 at D0, the 95% C.L. upper limits on Higgs boson production is a factor of 0.54 times the SM cross section for a Higgs boson mass of 165 GeV/c^2. We exclude at the 95% C.L. the region 158

  13. Combined CDF and D0 Searches for the Standard Model Higgs Boson Decaying to Two Photons with up to 8.2 fb^-1

    SciTech Connect (OSTI)

    Not Available

    2011-07-01

    We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV, focusing on the decay H {yields} {gamma}{gamma}. We compute upper limits on the Higgs boson production cross section times the decay branching fraction in the range 100 < m{sub H} < 150 GeV/c{sup 2}, and we interpret the results in the context of the standard model. We use the MSTW08 parton distribution functions and the latest theoretical cross section predictions when testing for the presence of a SM Higgs boson. With datasets corresponding to 7.0 fb{sup -1} (CDF) and 8.2 fb{sup -1} (D0), the 95% C.L. upper limits on Higgs boson production is a factor of 10.5 times the SM cross section for a Higgs boson mass of 115 GeV/c{sup 2}.

  14. Determination of Delta m(d) and absolute calibration of flavor taggers for the Delta m(s) analysis, in fully reconstructed decays at the CDF experiment

    SciTech Connect (OSTI)

    Gomez, Jonatan Piedra

    2005-07-01

    The new trigger processor, the Silicon Vertex Tracking (SVT), has dramatically improved the B physics capabilities of the upgraded CDF II Detector; for the first time in a hadron collider, the SVT has enabled the access to non-lepton-triggered B meson decays. Within the new available range of decay modes, the B{sub s}{sup 0} {yields} D{sub s}{sup -}{pi}{sup +} signature is of paramount importance in the measurement of the {Delta}m{sub s} mixing frequency. The analysis reported here is a step towards the measurement of this frequency; two where our goals: carrying out the absolute calibration of the opposite side flavor taggers, used in the {Delta}m{sub s} measurement; and measuring the B{sub d}{sup 0} mixing frequency in a B {yields} D{pi} sample, establishing the feasibility of the mixing measurement in this sample whose decay-length is strongly biased by the selective SVT trigger. We analyze a total integrated luminosity of 355 pb{sup -1} collected with the CDF II Detector. By triggering on muons, using the conventional di-muon trigger; or displaced tracks, using the SVT trigger, we gather a sample rich in bottom and charm mesons.

  15. Search for the Standard Model Higgs Boson associated with a W Boson using Matrix Element Technique in the CDF detector at the Tevatron

    SciTech Connect (OSTI)

    Alvarez Gonzalez, Barbara; /Oviedo U.

    2010-05-01

    In this thesis a direct search for the Standard Model Higgs boson production in association with a W boson at the CDF detector in the Tevatron is presented. This search contributes predominantly in the region of low mass Higgs region, when the mass of Higgs boson is less than about 135 GeV. The search is performed in a final state where the Higgs boson decays into two b quarks, and the W boson decays leptonically, to a charged lepton (it can be an electron or a muon) and a neutrino. This work is organized as follows. Chapter 2 gives an overview of the Standard Model theory of particle physics and presents the SM Higgs boson search results at LEP, and the Tevatron colliders, as well as the prospects for the SM Higgs boson searches at the LHC. The dataset used in this analysis corresponds to 4.8 fb{sup -1} of integrated luminosity of p{bar p} collisions at a center of mass energy of 1.96 TeV. That is the luminosity acquired between the beginning of the CDF Run II experiment, February 2002, and May 2009. The relevant aspects, for this analysis, of the Tevatron accelerator and the CDF detector are shown in Chapter 3. In Chapter 4 the particles and observables that make up the WH final state, electrons, muons, E{sub T}, and jets are presented. The CDF standard b-tagging algorithms to identify b jets, and the neural network flavor separator to distinguish them from other flavor jets are also described in Chapter 4. The main background contributions are those coming from heavy flavor production processes, such as those coming from Wbb, Wcc or Wc and tt. The signal and background signatures are discussed in Chapter 5 together with the Monte CArlo generators that have been used to simulate almost all the events used in this thesis. WH candidate events have a high-p{sub T} lepton (electron or muon), high missing transverse energy, and two or more than two jets in the final state. Chapter 6 describes the event selection applied in this analysis and the method used to estimate the background contribution. The Matrix Element method, that was successfully used in the single t0p discovery analysis and many other analyses within the CDF collaboration, is the multivariate technique used in this thesis to discriminate signal from background events. With this technique is possible to calculate a probability for an event to be classified as signal or background. These probabilities are then combined into a discriminant function called the Event Probability Discriminant, EPD, which increases the sensitivity of the WH process. This method is described in detail in Chapter 7. As no evidence for the signal has been found, the results obtained with this work are presented in Chapter 8 in terms of exclusion regions as a function of the mass of the Higgs boso, taking into account the full systematics. The conclusions of this work to obtain the PhD are presnted in Chapter 9.

  16. Search for the Standard Model Higgs Boson Decaying to a bb? Pair in Events with No Charged Leptons and Large Missing Transverse Energy using the Full CDF Data Set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We report on a search for the standard model Higgs boson produced in association with a vector boson in the full data set of proton-antiproton collisions at ?s=1.96??TeV recorded by the CDF II detector at the Tevatron, ...

  17. Search for gluino and squark production in multi-jets plus missing transverse energy final states at the Tevatron using the CDF detector

    SciTech Connect (OSTI)

    Portell i Bueso, Xavier; /Barcelona, IFAE

    2007-01-01

    In this thesis, the results of the search for squarks and gluinos in multiple jets plus missing transverse energy final states have been presented. No evidence of these new particles have been found in 371 pb{sup -1} of CDF Run II data. New limits have been set which exclude gluino masses below 220 GeV and, in the region where M{sub {tilde g}} {approx} M{sub {tilde q}}, masses below 380 GeV/c{sup 2} are excluded. These limits are valid in a mSUGRA scenario with tan {beta} = 5, A = 0 and {mu} < 0 assuming the lightest four squark flavours degenerate in mass. To obtain these results a careful study of the beam conditions and their contribution to events with E{sub T} final states has been performed. Special attention has been taken in studying the different SM backgrounds and their normalizations at NLO. Dedicated cuts have been introduced to remove the background processes and main discriminating variables have been optimized for different signal regions. The different systematic uncertainties have also been considered. This is the first time that this search is performed at CDF Run II and the results presented here show significant improvements with respect to the constraints from previous experiments. Thus, this analysis has established the procedure to continue searching for squarks and gluinos with the new data samples that CDF is collecting from Tevatron. Some improvements may also be implemented by considering other hadron final states with different jet multiplicities. This could help extending the sensitivity of the analysis to regions where gluino and squark masses are not similar. At the forthcoming LHC, the search for squarks and gluinos in this inclusive channel constitutes one of the first analyses to be performed. The E{sub T} and multiple jets final states are present in multiple decay modes of many models beyond the SM. The experience from Tevatron in working on an hadron collider environment will be useful for these kind of studies aiming to discover the presence of supersymmetric processes.

  18. NetCDF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications TheScience4.21 4.43EnergyAuthor: Monthly

  19. Measurement of $ZZ$ production in leptonic final states at $\\surd{s}$ of 1.96 TeV at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2011-12-01

    In this paper we present a precise measurement of the total ZZ production cross section in p{bar p} collisions at {radical}s = 1.96 TeV, using data collected with the CDF II detector corresponding to an integrated luminosity of approximately 6 fb{sup -1}. The result is obtained by combining separate measurements in the four-charged ({ell}{ell}{ell}{prime}{ell}{prime}), and two-charged-lepton and two-neutral-lepton ({ell}{ell}{nu}{nu}) decay modes of the Z. The combined measured cross section for p{bar p} {yields} ZZ is 1.64{sub -0.38}{sup +0.44} pb. This is the most precise measurement of the ZZ production cross section in 1.96 TeV p{bar p} collisions to date.

  20. A Search for the Higgs Boson Produced in Association with $Z\\to \\ell^+\\ell^-$ Using the Matrix Element Method at CDF II

    E-Print Network [OSTI]

    The CDF Collaboration; T. Aaltonen

    2009-08-25

    We present a search for associated production of the standard model (SM) Higgs boson and a $Z$ boson where the $Z$ boson decays to two leptons and the Higgs decays to a pair of $b$ quarks in $p\\bar{p}$ collisions at the Fermilab Tevatron. We use event probabilities based on SM matrix elements to construct a likelihood function of the Higgs content of the data sample. In a CDF data sample corresponding to an integrated luminosity of 2.7 fb$^{-1}$ we see no evidence of a Higgs boson with a mass between 100 GeV$/c^2$ and 150 GeV$/c^2$. We set 95% confidence level (C.L.) upper limits on the cross-section for $ZH$ production as a function of the Higgs boson mass $m_H$; the limit is 8.2 times the SM prediction at $m_H = 115$ GeV$/c^2$.

  1. Search for the standard model Higgs boson decaying to a bb pair in events with two oppositely-charged leptons using the full CDF data set

    E-Print Network [OSTI]

    CDF Collaboration

    2012-07-27

    We present a search for the standard model Higgs boson produced in association with a Z boson in data collected with the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.45/fb. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electron or muon pairs, we set 95% credibility level upper limits on the ZH production cross section times the H -> bb branching ratio as a function of Higgs boson mass. At a Higgs boson mass of 125 GeV/c^2 we observe (expect) a limit of 7.1 (3.9) times the standard model value.

  2. Combined CDF and D0 Upper Limits on Standard Model Higgs Boson Production with up to 8.6 fb-1 of Data

    E-Print Network [OSTI]

    The CDF; D0 Collaborations; the Tevatron New Phenomena; Higgs Working Group

    2011-09-20

    We combine results from CDF and D0 on direct searches for the standard model (SM) Higgs boson (H) in ppbar collisions at the Fermilab Tevatron at sqrt{s}=1.96 TeV. Compared to the previous Tevatron Higgs boson search combination more data have been added, additional channels have been incorporated, and some previously used channels have been reanalyzed to gain sensitivity. We use the MSTW08 parton distribution functions and the latest theoretical cross sections when comparing our limits to the SM predictions. With up to 8.2 fb-1 of data analyzed at CDF and up to 8.6 fb-1 at D0, the 95% C.L. our upper limits on Higgs boson production are factors of 1.17, 1.71, and 0.48 times the values of the SM cross section for Higgs bosons of mass m_H=115 GeV/c^2, 140 GeV/c^2, and 165 GeV/c^2, respectively. The corresponding median upper limits expected in the absence of Higgs boson production are 1.16, 1.16, and 0.57. There is a small (approx. 1 sigma) excess of data events with respect to the background estimation in searches for the Higgs boson in the mass range 125

  3. Combined CDF and D0 Upper Limits on Standard Model Higgs Boson Production with up to 8.6 fb-1 of Data

    SciTech Connect (OSTI)

    CDF, The; Collaborations, D0; Phenomena, the Tevatron New; Group, Higgs Working

    2011-07-01

    We combine results from CDF and D0 on direct searches for the standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Tevatron Higgs boson search combination more data have been added, additional channels have been incorporated, and some previously used channels have been reanalyzed to gain sensitivity. We use the MSTW08 parton distribution functions and the latest theoretical cross sections when comparing our limits to the SM predictions. With up to 8.2 fb{sup -1} of data analyzed at CDF and up to 8.6 fb{sup -1} at D0, the 95% C.L. our upper limits on Higgs boson production are factors of 1.17, 1.71, and 0.48 times the values of the SM cross section for Higgs bosons of mass m{sub H} = 115 GeV/c{sup 2}, 140 GeV/c{sup 2}, and 165 GeV/c{sup 2}, respectively. The corresponding median upper limits expected in the absence of Higgs boson production are 1.16, 1.16, and 0.57. There is a small ({approx} 1{sigma}) excess of data events with respect to the background estimation in searches for the Higgs boson in the mass range 125 < m{sub H} < 155 GeV/c{sup 2}. We exclude, at the 95% C.L., a new and larger region at high mass between 156 < m{sub H} < 177 GeV/c{sup 2}, with an expected exclusion region of 148 < m{sub H} < 180 GeV/c{sup 2}.

  4. Measurement of the top-quark mass in the lepton+jets channel using a matrix element technique with the CDF II detector

    SciTech Connect (OSTI)

    Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Amidei, D; Anastassov, A; Annovi, A

    2011-10-14

    A measurement of the top-quark mass is presented using Tevatron data from proton-antiproton collisions at center-of-mass energy ?s = 1.96 TeV collected with the CDF II detector. Events are selected from a sample of candidates for production of tt? pairs that decay into the lepton+jets channel. The top-quark mass is measured with an unbinned maximum likelihood method where the event probability density functions are calculated using signal and background matrix elements, as well as a set of parameterized jet-to-parton transfer functions. The likelihood function is maximized with respect to the top-quark mass, the signal fraction in the sample, and a correction to the jet energy scale (JES) calibration of the calorimeter jets. The simultaneous measurement of the JES correction ({Delta}{sub JES}) amounts to an additional in situ jet energy calibration based on the known mass of the hadronically decaying W boson. Using the data sample of 578 lepton+jets candidate events, corresponding to 3.2 fb-1 of integrated luminosity, the top-quark mass is measured to be mt = 172.4± 1.4 (stat + ?JES) ± 1.3 (syst) GeV/c2.

  5. Search for $B_s \\to \\mu^+\\mu^-$ and $B_d \\to \\mu^+\\mu^-$ Decays with CDF II

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Apresyan, A.; Arisawa, T.; /Waseda U. /Dubna, JINR

    2011-07-01

    A search has been performed for B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -} and B{sup 0} {yields} {mu}{sup +}{mu}{sup -} decays using 7 fb{sup -1} of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. The observed number of B{sup 0} candidates is consistent with background-only expectations and yields an upper limit on the branching fraction of {Beta}(B{sup 0} {yields} {mu}{sup +}{mu}{sup -}) < 6.0 x 10{sup -9} at 95% confidence level. We observe an excess of B{sub s}{sup 0} candidates. The probability that the background processes alone could produce such an excess or larger is 0.27%. The probability that the combination of background and the expected standard model rate of B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -} could produce such an excess or larger is 1.9%. These data are used to determine {Beta}(B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -}) = (1.8{sub -0.9}{sup +1.1}) x 10{sup -8} and provide an upper limit of {Beta}(B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -}) < 4.0 x 10{sup -8} at 95% confidence level.

  6. Updated search for the standard model Higgs boson in events with jets and missing transverse energy using the full CDF data set

    E-Print Network [OSTI]

    CDF Collaboration; T. Aaltonen; S. Amerio; D. Amidei; A. Anastassov; A. Annovi; J. Antos; G. Apollinari; J. A. Appel; T. Arisawa; A. Artikov; J. Asaadi; W. Ashmanskas; B. Auerbach; A. Aurisano; F. Azfar; W. Badgett; T. Bae; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; P. Barria; P. Bartos; M. Bauce; F. Bedeschi; S. Behari; G. Bellettini; J. Bellinger; D. Benjamin; A. Beretvas; A. Bhatti; K. R. Bland; B. Blumenfeld; A. Bocci; A. Bodek; D. Bortoletto; J. Boudreau; A. Boveia; L. Brigliadori; C. Bromberg; E. Brucken; J. Budagov; H. S. Budd; K. Burkett; G. Busetto; P. Bussey; P. Butti; A. Buzatu; A. Calamba; S. Camarda; M. Campanelli; F. Canelli; B. Carls; D. Carlsmith; R. Carosi; S. Carrillo; B. Casal; M. Casarsa; A. Castro; P. Catastini; D. Cauz; V. Cavaliere; M. Cavalli-Sforza; A. Cerri; L. Cerrito; Y. C. Chen; M. Chertok; G. Chiarelli; G. Chlachidze; K. Cho; D. Chokheli; M. A. Ciocci; A. Clark; C. Clarke; M. E. Convery; J. Conway; M. Corbo; M. Cordelli; C. A. Cox; D. J. Cox; M. Cremonesi; D. Cruz; J. Cuevas; R. Culbertson; N. d'Ascenzo; M. Datta; P. De Barbaro; L. Demortier; M. Deninno; F. Devoto; M. d'Errico; A. Di Canto; B. Di Ruzza; J. R. Dittmann; M. D'Onofrio; S. Donati; M. Dorigo; A. Driutti; K. Ebina; R. Edgar; A. Elagin; R. Erbacher; S. Errede; B. Esham; R. Eusebi; S. Farrington; J. P. Fernandez Ramos; R. Field; G. Flanagan; R. Forrest; M. Franklin; J. C. Freeman; H. Frisch; Y. Funakoshi; A. F. Garfinkel; P. Garosi; H. Gerberich; E. Gerchtein; S. Giagu; V. Giakoumopoulou; K. Gibson; C. M. Ginsburg; N. Giokaris; P. Giromini; G. Giurgiu; V. Glagolev; D. Glenzinski; M. Gold; D. Goldin; A. Golossanov; G. Gomez; G. Gomez-Ceballos; M. Goncharov; O. Gonzalez Lopez; I. Gorelov; A. T. Goshaw; K. Goulianos; E. Gramellini; S. Grinstein; C. Grosso-Pilcher; R. C. Group; J. Guimaraes da Costa; S. R. Hahn; J. Y. Han; F. Happacher; K. Hara; M. Hare; R. F. Harr; T. Harrington-Taber; K. Hatakeyama; C. Hays; J. Heinrich; M. Herndon; A. Hocker; Z. Hong; W. Hopkins; S. Hou; R. E. Hughes; U. Husemann; J. Huston; G. Introzzi; M. Iori; A. Ivanov; E. James; D. Jang; B. Jayatilaka; E. J. Jeon; S. Jindariani; M. Jones; K. K. Joo; S. Y. Jun; T. R. Junk; M. Kambeitz; T. Kamon; P. E. Karchin; A. Kasmi; Y. Kato; W. Ketchum; J. Keung; B. Kilminster; D. H. Kim; H. S. Kim; J. E. Kim; M. J. Kim; S. B. Kim; S. H. Kim; Y. K. Kim; Y. J. Kim; N. Kimura; M. Kirby; K. Knoepfel; K. Kondo; D. J. Kong; J. Konigsberg; A. V. Kotwal; M. Kreps; J. Kroll; M. Kruse; T. Kuhr; M. Kurata; A. T. Laasanen; S. Lammel; M. Lancaster; K. Lannon; G. Latino; H. S. Lee; J. S. Lee; S. Leo; S. Leone; J. D. Lewis; A. Limosani; E. Lipeles; T. Liu; Q. Liu; T. Liu; S. Lockwitz; A. Loginov; D. Lucchesi; J. Lueck; P. Lujan; P. Lukens; G. Lungu; J. Lys; R. Lysak; R. Madrak; P. Maestro; S. Malik; G. Manca; A. Manousakis-Katsikakis; F. Margaroli; P. Marino; M. Martinez; K. Matera; M. E. Mattson; A. Mazzacane; P. Mazzanti; R. McNulty; A. Mehta; P. Mehtala; C. Mesropian; T. Miao; D. Mietlicki; A. Mitra; H. Miyake; S. Moed; N. Moggi; C. S. Moon; R. Moore; M. J. Morello; A. Mukherjee; Th. Muller; P. Murat; M. Mussini; J. Nachtman; Y. Nagai; J. Naganoma; I. Nakano; A. Napier; J. Nett; C. Neu; T. Nigmanov; L. Nodulman; S. Y. Noh; O. Norniella; L. Oakes; S. H. Oh; Y. D. Oh; I. Oksuzian; T. Okusawa; R. Orava; L. Ortolan; C. Pagliarone; E. Palencia; P. Palni; V. Papadimitriou; W. Parker; G. Pauletta; M. Paulini; C. Paus; T. J. Phillips; G. Piacentino; E. Pianori; J. Pilot; K. Pitts; C. Plager; L. Pondrom; S. Poprocki; K. Potamianos; F. Prokoshin; A. Pranko; F. Ptohos; G. Punzi; N. Ranjan; I. Redondo Fernandez; P. Renton; M. Rescigno; T. Riddick; F. Rimondi; L. Ristori; A. Robson; T. Rodriguez; S. Rolli; M. Ronzani; R. Roser; J. L. Rosner; F. Ruffini; A. Ruiz; J. Russ; V. Rusu; A. Safonov; W. K. Sakumoto; Y. Sakurai; L. Santi; K. Sato; V. Saveliev; A. Savoy-Navarro; P. Schlabach; E. E. Schmidt; T. Schwarz; L. Scodellaro; F. Scuri; S. Seidel; Y. Seiya; A. Semenov; F. Sforza; S. Z. Shalhout; T. Shears; P. F. Shepard; M. Shimojima; M. Shochet; I. Shreyber-Tecker; A. Simonenko; P. Sinervo; K. Sliwa; J. R. Smith; F. D. Snider; V. Sorin; H. Song; M. Stancari; R. St. Denis; B. Stelzer; O. Stelzer-Chilton; D. Stentz; J. Strologas; Y. Sudo; A. Sukhanov; I. Suslov; K. Takemasa; Y. Takeuchi; J. Tang; M. Tecchio; P. K. Teng; J. Thom; E. Thomson; V. Thukral; D. Toback; S. Tokar; K. Tollefson; T. Tomura; D. Tonelli; S. Torre; D. Torretta; P. Totaro; M. Trovato; F. Ukegawa; S. Uozumi; F. Vaquez; G. Velev; C. Vellidis; C. Vernieri; M. Vidal; R. Vilar; J. Vizan; M. Vogel; G. Volpi; P. Wagner; R. Wallny; S. M. Wang; A. Warburton; D. Waters; W. C. Wester III; D. Whiteson; A. B. Wicklund; S. Wilbur; H. H. Williams; J. S. Wilson; P. Wilson; B. L. Winer; P. Wittich; S. Wolbers; H. Wolfe; T. Wright; X. Wu; Z. Wu; K. Yamamoto; D. Yamato; T. Yang; U. K. Yang; Y. C. Yang; W. -M. Yao; G. P. Yeh; K. Yi

    2013-01-18

    We present an updated search for the Higgs boson produced in association with a vector boson in the final state with missing transverse energy and two jets. We use the full CDF data set corresponding to an integrated luminosity of 9.45 fb${}^{-1}$ at a proton-antiproton center-of-mass energy of $\\sqrt{s}=1.96$ TeV. New to this analysis is the inclusion of a $b$-jet identification algorithm specifically optimized for $H\\to b\\bar{b}$ searches. Across the Higgs boson mass range $90 \\le m_H \\le 150$ GeV$/c^2$, the expected 95% credibility level upper limits on the $V H$ production cross section times the $H\\to b\\bar{b}$ branching fraction are improved by an average of 14% relative to the previous analysis. At a Higgs boson mass of 125 GeV$/c^2$, the observed (expected) limit is 3.06 (3.33) times the standard model prediction, corresponding to one of the most sensitive searches to date in this final state.

  7. Measurement of the ratio of branching fractions B(D0 ---> K+ pi-) / B(D0 ---> K- pi+) using the CDF II Detector

    SciTech Connect (OSTI)

    Abulencia, A.; Acosta, D.; Adelman, Jahred A.; Affolder, T.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; /Taiwan, Inst.

    2006-05-01

    The authors present a measurement of R{sub B}, the ratio of the branching fraction for the rare decay D{sup 0} {yields} K{sup +}{pi}{sup -} to that for the Cabibbo-favored decay D{sup 0} {yields} K{sup -}{pi}{sup +}. Charge conjugate decays are implicitly included. A signal of 2005 {+-} 104 events for the decay D{sup 0} {yields} K{sup +}{pi}{sup -} is obtained using the CDF II detector at the Fermilab Tevatron collider. The data set corresponds to an integrated luminosity of 0.35 fb{sup -1} produced in {bar p}p collisions at {radical}s = 1.96 TeV. Assuming no mixing, they find R{sub B} = [4.05 {+-} 0.21(stat) {+-} 0.11(syst)] x 10{sup -3}. This measurement is consistent with the world average, and comparable in accuracy with the best measurements from other experiments.

  8. Measurement of the top-quark mass in all-hadronic decays in p anti-p collisions at CDF II

    SciTech Connect (OSTI)

    Aaltonen, T.; Abulencia, A.; Adelman, J.; Affolder, T.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; /Fermilab /Frascati

    2006-12-01

    We present a measurement of the top-quark mass, M{sub tpo}, in the all-hadronic decay channel t{bar t} {yields} W{sup +}bW{sup -}{bar b} {yields} q{sub 1}{bar q}{sub 2}bq{sub 3}{bar q}{sub 4}{bar b}. The analysis is performed using 310 pb{sup -1} of {radical}s = 1.96 TeV p{bar p} collisions collected with the CDF II detector using a multi-jet trigger. The mass measurement is based on an event-by-event likelihood which depends on both the sample purity and the value of the top-quark mass, using 90 possible jet-to-parton assignments in the six-jet final state. The joint likelihood of 290 selected events yields a value of M{sub top} = 177.1 {+-} 4.9(stat.) {+-} 4.7(syst.) GeV/c{sup 2}.

  9. Measurement of the top-quark mass in the lepton+jets channel using a matrix element technique with the CDF II detector

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T [Helsinki Inst. of Phys.; Alvarez Gonzalez, B [Oviedo U., Cantabria Inst. of Phys.; Amerio, S [INFN, Padua; Amidei, D [Michigan U.; Anastassov, A [Northwestern U.; Annovi, A [Frascati

    2011-10-14

    A measurement of the top-quark mass is presented using Tevatron data from proton-antiproton collisions at center-of-mass energy ?s = 1.96 TeV collected with the CDF II detector. Events are selected from a sample of candidates for production of tt? pairs that decay into the lepton+jets channel. The top-quark mass is measured with an unbinned maximum likelihood method where the event probability density functions are calculated using signal and background matrix elements, as well as a set of parameterized jet-to-parton transfer functions. The likelihood function is maximized with respect to the top-quark mass, the signal fraction in the sample, and a correction to the jet energy scale (JES) calibration of the calorimeter jets. The simultaneous measurement of the JES correction ({Delta}{sub JES}) amounts to an additional in situ jet energy calibration based on the known mass of the hadronically decaying W boson. Using the data sample of 578 lepton+jets candidate events, corresponding to 3.2 fb-1 of integrated luminosity, the top-quark mass is measured to be mt = 172.4± 1.4 (stat + ?JES) ± 1.3 (syst) GeV/c2.

  10. Measurement of ww + wz production cross section and study of the dijet mass spectrum in the lnu + jets final state at CDF

    SciTech Connect (OSTI)

    Cavaliere, Viviana; /Siena U.

    2010-12-01

    We present the measurement of the WW and WZ production cross section in p{bar p} collisions at {radical}s = 1.96 TeV, in a final state consisting of an electron or muon, neutrino and jets. The data analyzed were collected by the CDF II detector at the Tevatron collider and correspond to 4.3 fb{sup -1} of integrated luminosity. The analysis uses a fit to the dijet mass distribution to extract the diboson contribution. We observe 1582 {+-} 275(stat.) {+-} 107(syst.) diboson candidate events and measure a cross section of {sigma}{sub WW/WZ} = 18.1 {+-} 3.3(stat.) {+-} 2.5(syst.) pb, consistent with the Standard Model prediction of 15.9 {+-} 0.9 pb. The best fit to the dijet mass of the known components shows a good agreement with the data except for the [120, 160] GeV/c{sup 2} mass range, where an excess is observed. We perform detailed checks of our background model and study the significance of the excess, assuming an additional gaussian component with a width compatible with the expected dijet mass resolution. A standard {Delta}{sub {chi}}{sup 2} test of the presence of the additional component, returns a p-value of 4.2 x 10{sup -4} when standard sources of systematics are considered, corresponding to a significance of 3.3{sigma}.

  11. Measurement of the top-quark mass in the lepton+jets channel using a matrix element technique with the CDF II detector

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.

    2011-10-14

    A measurement of the top-quark mass is presented using Tevatron data from proton-antiproton collisions at center-of-mass energy ?s = 1.96 TeV collected with the CDF II detector. Events are selected from a sample of candidates for production of tt? pairs that decay into the lepton+jets channel. The top-quark mass is measured with an unbinned maximum likelihood method where the event probability density functions are calculated using signal and background matrix elements, as well as a set of parameterized jet-to-parton transfer functions. The likelihood function is maximized with respect to the top-quark mass, the signal fraction in the sample, and amore »correction to the jet energy scale (JES) calibration of the calorimeter jets. The simultaneous measurement of the JES correction ({Delta}{sub JES}) amounts to an additional in situ jet energy calibration based on the known mass of the hadronically decaying W boson. Using the data sample of 578 lepton+jets candidate events, corresponding to 3.2 fb-1 of integrated luminosity, the top-quark mass is measured to be mt = 172.4± 1.4 (stat + ?JES) ± 1.3 (syst) GeV/c2.« less

  12. Measurement of the top-quark mass in the ${t\\bar{t}}$ dilepton channel using the full CDF Run II data set

    E-Print Network [OSTI]

    Aaltonen, T; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Auerbach, B; Aurisano, A; Azfar, F; Badgett, W; Bae, T; Barbaro-Galtieri, A; Barnes, V E; Barnett, B A; Barria, P; Bartos, P; Bauce, M; Bedeschi, F; Behari, S; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Bland, K R; Blumenfeld, B; Bocci, A; Bodek, A; Bortoletto, D; Boudreau, J; Boveia, A; Brigliadori, L; Bromberg, C; Brucken, E; Budagov, J; Budd, H S; Burkett, K; Busetto, G; Bussey, P; Butti, P; Buzatu, A; Calamba, A; Camarda, S; Campanelli, M; Canelli, F; Carls, B; Carlsmith, D; Carosi, R; Carrillo, S; Casal, B; Casarsa, M; Castro, A; Catastini, P; Cauz, D; Cavaliere, V; Cerri, A; Cerrito, L; Chen, Y C; Chertok, M; Chiarelli, G; Chlachidze, G; Cho, K; Chokheli, D; Clark, A; Clarke, C; Convery, M E; Conway, J; Corbo, M; Cordelli, M; Cox, C A; Cox, D J; Cremonesi, M; Cruz, D; Cuevas, J; Culbertson, R; d'Ascenzo, N; Datta, M; de Barbaro, P; Demortier, L; Marchese, L; Deninno, M; Devoto, F; D'Errico, M; Di Canto, A; Di Ruzza, B; Dittmann, J R; D'Onofrio, M; Donati, S; Dorigo, M; Driutti, A; Ebina, K; Edgar, R; Elagin, A; Erbacher, R; Errede, S; Esham, B; Farrington, S; Ramos, J P Fernández; Field, R; Flanagan, G; Forrest, R; Franklin, M; Freeman, J C; Frisch, H; Funakoshi, Y; Galloni, C; Garfinkel, A F; Garosi, P; Gerberich, H; Gerchtein, E; Giagu, S; Giakoumopoulou, V; Gibson, K; Ginsburg, C M; Giokaris, N; Giromini, P; Glagolev, V; Glenzinski, D; Gold, M; Goldin, D; Golossanov, A; Gomez, G; Gomez-Ceballos, G; Goncharov, M; López, O González; Gorelov, I; Goshaw, A T; Goulianos, K; Gramellini, E; Grosso-Pilcher, C; da Costa, J Guimaraes; Hahn, S R; Han, J Y; Happacher, F; Hara, K; Hare, M; Harr, R F; Harrington-Taber, T; Hatakeyama, K; Hays, C; Heinrich, J; Herndon, M; Hocker, A; Hong, Z; Hopkins, W; Hou, S; Hughes, R E; Husemann, U; Hussein, M; Huston, J; Introzzi, G; Iori, M; Ivanov, A; James, E; Jang, D; Jayatilaka, B; Jeon, E J; Jindariani, S; Jones, M; Joo, K K; Jun, S Y; Junk, T R; Kambeitz, M; Kamon, T; Karchin, P E; Kasmi, A; Kato, Y; Ketchum, W; Keung, J; Kilminster, B; Kim, D H; Kim, H S; Kim, J E; Kim, M J; Kim, S B; Kim, S H; Kim, Y K; Kim, Y J; Kimura, N; Kirby, M; Knoepfel, K; Kondo, K; Kong, D J; Konigsberg, J; Kotwal, A V; Kreps, M; Kroll, J; Kruse, M; Kuhr, T; Kurata, M; Laasanen, A T; Lammel, S; Lancaster, M; Lannon, K; Latino, G; Lee, H S; Lee, J S; Leo, S; Leone, S; Lewis, J D; Limosani, A; Lipeles, E; Lister, A; Liu, H; Liu, Q; Liu, T; Lockwitz, S; Loginov, A; Lucà, A; Lucchesi, D; Lueck, J; Lujan, P; Lukens, P; Lungu, G; Lys, J; Lysak, R; Madrak, R; Maestro, P; Malik, S; Manca, G; Manousakis-Katsikakis, A; Margaroli, F; Marino, P; Matera, K; Mattson, M E; Mazzacane, A; Mazzanti, P; McNulty, R; Mehta, A; Mehtala, P; Mesropian, C; Miao, T; Mietlicki, D; Mitra, A; Miyake, H; Moed, S; Moggi, N; Moon, C S; Moore, R; Morello, M J; Mukherjee, A; Muller, Th; Murat, P; Mussini, M; Nachtman, J; Nagai, Y; Naganoma, J; Nakano, I; Napier, A; Nett, J; Neu, C; Nigmanov, T; Nodulman, L; Noh, S Y; Norniella, O; Oakes, L; Oh, S H; Oh, Y D; Oksuzian, I; Okusawa, T; Orava, R; Ortolan, L; Pagliarone, C; Palencia, E; Palni, P; Papadimitriou, V; Parker, W; Pauletta, G; Paulini, M; Paus, C; Phillips, T J; Piacentino, G; Pianori, E; Pilot, J; Pitts, K; Plager, C; Pondrom, L; Poprocki, S; Potamianos, K; Prokoshin, F; Pranko, A; Ptohos, F; Punzi, G; Fernández, I Redondo; Renton, P; Rescigno, M; Rimondi, F; Ristori, L; Robson, A; Rodriguez, T; Rolli, S; Ronzani, M; Roser, R; Rosner, J L; Ruffini, F; Ruiz, A; Russ, J; Rusu, V; Sakumoto, W K; Sakurai, Y; Santi, L; Sato, K; Saveliev, V; Savoy-Navarro, A; Schlabach, P; Schmidt, E E; Schwarz, T; Scodellaro, L; Scuri, F; Seidel, S; Seiya, Y; Semenov, A; Sforza, F; Shalhout, S Z; Shears, T; Shepard, P F; Shimojima, M; Shochet, M; Shreyber-Tecker, I; Simonenko, A; Sliwa, K; Smith, J R; Snider, F D; Sorin, V; Song, H; Stancari, M; Denis, R St; Stentz, D; Strologas, J; Sudo, Y; Sukhanov, A; Suslov, I; Takemasa, K; Takeuchi, Y; Tang, J; Tecchio, M; Teng, P K; Thom, J; Thomson, E; Thukral, V; Toback, D; Tokar, S; Tollefson, K; Tomura, T; Tonelli, D; Torre, S; Torretta, D; Totaro, P; Trovato, M; Ukegawa, F; Uozumi, S; Vázquez, F; Velev, G; Vellidis, C; Vernieri, C; Vidal, M; Vilar, R; Vizán, J; Vogel, M; Volpi, G; Wagner, P; Wallny, R; Wang, S M; Waters, D; Wester, W C; Whiteson, D; Wicklund, A B; Wilbur, S; Williams, H H; Wilson, J S; Wilson, P; Winer, B L; Wittich, P; Wolbers, S; Wolfe, H; Wright, T; Wu, X; Wu, Z; Yamamoto, K; Yamato, D; Yang, T; Yang, U K; Yang, Y C; Yao, W -M; Yeh, G P; Yi, K; Yoh, J; Yorita, K; Yoshida, T; Yu, G B; Yu, I; Zanetti, A M; Zeng, Y; Zhou, C; Zucchelli, S

    2015-01-01

    We present a measurement of the top-quark mass in events containing two leptons (electrons or muons) with a large transverse momentum, two or more energetic jets, and a transverse-momentum imbalance. We use the full proton-antiproton collision data set collected by the CDF experiment during the Fermilab Tevatron Run~II at center-of-mass energy $\\sqrt{s} = 1.96$ TeV, corresponding to an integrated luminosity of 9.1 fb$^{-1}$. A special observable is exploited for an optimal reduction of the dominant systematic uncertainty, associated with the knowledge of the absolute energy of the hadronic jets. The distribution of this observable in the selected events is compared to simulated distributions of ${t\\bar{t}}$ dilepton signal and background.We measure a value for the top-quark mass of $171.5\\pm 1.9~{\\rm (stat)}\\pm 2.5~{\\rm (syst)}$ GeV/$c^2$.

  13. Measurement of branching ratio and B0s lifetime in the decay B0s ? J/? f0(980) at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.

    2011-09-30

    We present a study of Bs0 decays to the CP-odd final state J/? f0(980) with J/? ? µ+µ- and f0(980) ? ?+?-. Using pp? collision data with an integrated luminosity of 3.8 fb-1 collected by the CDF II detector at the Tevatron we measure a Bs0 lifetime of ?(B0s ? J/? f0(980)) = 1.70-0.11+0.12(stat) ± 0.03(syst) ps. This is the first measurement of the Bs0} lifetime in a decay to a CP eigenstate and corresponds in the standard model to the lifetime of the heavy Bs0 eigenstate. We also measure the product of branching fractions of B0s ? J/? f0(980)more »and f0(980) ? ?+?- relative to the product of branching fractions of B0s ? J/?? and ??K+K- to be Rf0/? = 0.257 ± 0.020(stat) ± 0.014(syst), which is the most precise determination of this quantity to date.« less

  14. Search for the standard model Higgs boson produced in association with a W± boson with 7.5 fb?¹ integrated luminosity at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bisello, D.; Bizjak, I.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Buzatu, A.; Calamba, A.; Calancha, C.; Camarda, S.; Campanelli, M.; Campbell, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Carron, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cavalli-Sforza, M.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Cho, K.; Chokheli, D.; Chung, W. H.; Chung, Y. S.; Ciocci, M. A.; Clark, A.; Clarke, C.; Compostella, G.; Convery, M. E.; Conway, J.; Corbo, M.; Cordelli, M.; Cox, C. A.; Cox, D. J.; Crescioli, F.; Cuevas, J.; Culbertson, R.; Dagenhart, D.; d’Ascenzo, N.; Datta, M.; de Barbaro, P.; Dell’Orso, M.; Demortier, L.; Deninno, M.; Devoto, F.; d’Errico, M.; Di Canto, A.; Di Ruzza, B.; Dittmann, J. R.; D’Onofrio, M.; Donati, S.; Dong, P.; Dorigo, M.; Dorigo, T.; Ebina, K.; Elagin, A.; Eppig, A.; Erbacher, R.; Errede, S.; Ershaidat, N.; Eusebi, R.; Farrington, S.; Feindt, M.; Fernandez, J. P.; Field, R.; Flanagan, G.; Forrest, R.; Frank, M. J.; Franklin, M.; Freeman, J. C.; Funakoshi, Y.; Furic, I.; Gallinaro, M.; Garcia, J. E.; Garfinkel, A. F.; Garosi, P.; Gerberich, H.; Gerchtein, E.; Giagu, S.; Giakoumopoulou, V.; Giannetti, P.; Gibson, K.; Ginsburg, C. M.; Giokaris, N.; Giromini, P.; Giurgiu, G.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldin, D.; Goldschmidt, N.; Golossanov, A.; Gomez, G.; Gomez-Ceballos, G.; Goncharov, M.; González, O.; Gorelov, I.; Goshaw, A. T.; Goulianos, K.; Grinstein, S.; Grosso-Pilcher, C.; Group, R. C.; Guimaraes da Costa, J.; Hahn, S. R.; Halkiadakis, E.; Hamaguchi, A.; Han, J. Y.; Happacher, F.; Hara, K.; Hare, D.; Hare, M.; Harr, R. F.; Hatakeyama, K.; Hays, C.; Heck, M.; Heinrich, J.; Herndon, M.; Hewamanage, S.; Hocker, A.; Hopkins, W.; Horn, D.; Hou, S.; Hughes, R. E.; Hurwitz, M.; Husemann, U.; Hussain, N.; Hussein, M.; Huston, J.; Introzzi, G.; Iori, M.; Ivanov, A.; James, E.; Jang, D.; Jayatilaka, B.; Jeon, E. J.; Jindariani, S.; Jones, M.; Joo, K. K.; Jun, S. Y.; Junk, T. R.; Kamon, T.; Karchin, P. E.; Kasmi, A.; Kato, Y.; Ketchum, W.; Keung, J.; Khotilovich, V.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, Y. K.; Kim, Y. J.; Kimura, N.; Kirby, M.; Klimenko, S.; Knoepfel, K.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Kotwal, A. V.; Kreps, M.; Kroll, J.; Krop, D.; Kruse, M.; Krutelyov, V.; Kuhr, T.; Kurata, M.; Kwang, S.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, M.; Lander, R. L.; Lannon, K.; Lath, A.; Latino, G.; LeCompte, T.; Lee, E.; Lee, H. S.; Lee, J. S.; Lee, S. W.; Leo, S.; Leone, S.; Lewis, J. D.; Limosani, A.; Lin, C.-J.; Lindgren, M.; Lipeles, E.; Lister, A.; Litvintsev, D. O.; Liu, C.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysak, R.; Madrak, R.; Maeshima, K.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Margaroli, F.; Marino, C.; Martínez, M.; Mastrandrea, P.; Matera, K.; Mattson, M. E.; Mazzacane, A.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; McNulty, R.; Mehta, A.; Mehtala, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moed, S.; Moggi, N.; Mondragon, M. N.; Moon, C. S.; Moore, R.; Morello, M. J.; Morlock, J.; Movilla Fernandez, P.; Mukherjee, A.; Muller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Neubauer, M. S.; Nielsen, J.; Nodulman, L.; Noh, S. Y.; Norniella, O.; Oakes, L.; Oh, S. H.; Oh, Y. D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagan Griso, S.; Pagliarone, C.; Palencia, E.; Papadimitriou, V.; Paramonov, A. A.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pellett, D. E.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Pianori, E.; Pilot, J.; Pitts, K.; Plager, C.; Pondrom, L.; Poprocki, S.; Potamianos, K.; Prokoshin, F.; Pranko, A.; Ptohos, F.; Punzi, G.; Rahaman, A.; Ramakrishnan, V.; Ranjan, N.; Redondo, I.; Renton, P.; Rescigno, M.; Riddick, T.; Rimondi, F.; Ristori, L.; Robson, A.; Rodrigo, T.; Rodriguez, T.; Rogers, E.; Rolli, S.; Roser, R.; Ruffini, F.; Ruiz, A.; Russ, J.; Rusu, V.; Safonov, A.; Sakumoto, W. K.

    2012-08-01

    We present a search for the standard model Higgs boson produced in association with a W± boson. This search uses data corresponding to an integrated luminosity of 7.5 fb?¹ collected by the CDF detector at the Tevatron. We select WH?l?bb¯ candidate events with two jets, large missing transverse energy, and exactly one charged lepton. We further require that at least one jet be identified to originate from a bottom quark. Discrimination between the signal and the large background is achieved through the use of a Bayesian artificial neural network. The number of tagged events and their distributions are consistent with the standard model expectations. We observe no evidence for a Higgs boson signal and set 95% C.L. upper limits on the WH production cross section times the branching ratio to decay to bb¯ pairs, ?(pp¯?W±H)×B(H?bb¯), relative to the rate predicted by the standard model. For the Higgs boson mass range of 100 to 150 GeV/c² we set observed (expected) upper limits from 1.34 (1.83) to 38.8 (23.4). For 115 GeV/c² the upper limit is 3.64 (2.78). The combination of the present search with an independent analysis that selects events with three jets yields more stringent limits ranging from 1.12 (1.79) to 34.4 (21.6) in the same mass range. For 115 and 125 GeV/c² the upper limits are 2.65 (2.60) and 4.36 (3.69), respectively.

  15. Search for the standard model Higgs boson produced in association with a W± boson with 7.5 fb?¹ integrated luminosity at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; et al

    2012-08-01

    We present a search for the standard model Higgs boson produced in association with a W± boson. This search uses data corresponding to an integrated luminosity of 7.5 fb?¹ collected by the CDF detector at the Tevatron. We select WH?l?bb¯ candidate events with two jets, large missing transverse energy, and exactly one charged lepton. We further require that at least one jet be identified to originate from a bottom quark. Discrimination between the signal and the large background is achieved through the use of a Bayesian artificial neural network. The number of tagged events and their distributions are consistent withmore »the standard model expectations. We observe no evidence for a Higgs boson signal and set 95% C.L. upper limits on the WH production cross section times the branching ratio to decay to bb¯ pairs, ?(pp¯?W±H)×B(H?bb¯), relative to the rate predicted by the standard model. For the Higgs boson mass range of 100 to 150 GeV/c² we set observed (expected) upper limits from 1.34 (1.83) to 38.8 (23.4). For 115 GeV/c² the upper limit is 3.64 (2.78). The combination of the present search with an independent analysis that selects events with three jets yields more stringent limits ranging from 1.12 (1.79) to 34.4 (21.6) in the same mass range. For 115 and 125 GeV/c² the upper limits are 2.65 (2.60) and 4.36 (3.69), respectively.« less

  16. Optimization of the signal selection of exclusively reconstructed decays of B0 and B/s mesons at CDF-II

    SciTech Connect (OSTI)

    Doerr, Christian; /Karlsruhe U., EKP

    2006-06-01

    The work presented in this thesis is mainly focused on the application in a {Delta}m{sub s} measurement. Chapter 1 starts with a general theoretical introduction on the unitarity triangle with a focus on the impact of a {Delta}m{sub s} measurement. Chapter 2 then describes the experimental setup, consisting of the Tevatron collider and the CDF II detector, that was used to collect the data. In chapter 3 the concept of parameter estimation using binned and unbinned maximum likelihood fits is laid out. In addition an introduction to the NeuroBayes{reg_sign} neural network package is given. Chapter 4 outlines the analysis steps walking the path from the trigger level selection to fully reconstructed B mesons candidates. In chapter 5 the concepts and formulas that form the ingredients to an unbinned maximum likelihood fit of {Delta}m{sub s} ({Delta}m{sub d}) from a sample of reconstructed B mesons are discussed. Chapter 6 then introduces the novel method of using neural networks to achieve an improved signal selection. First the method is developed, tested and validated using the decay B{sup 0} {yields} D{pi}, D {yields} K{pi}{pi} and then applied to the kinematically very similar decay B{sub s} {yields} D{sub s}{pi}, D{sub s} {yields} {phi}{pi}, {phi} {yields} KK. Chapter 7 uses events selected by the neural network selection as input to an unbinned maximum likelihood fit and extracts the B{sup 0} lifetime and {Delta}m{sub d}. In addition, an amplitude scan and an unbinned maximum likelihood fit of {Delta}m{sub s} is performed, applying the neural network selection developed for the decay channel B{sub s} {yields} D{sub s}{pi}, D{sub s} {yields} {phi}{pi}, {phi} {yields} KK. Finally chapter 8 summarizes and gives an outlook.

  17. Search for the standard model Higgs boson produced in association with a W± boson with 7.5 fb?¹ integrated luminosity at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bisello, D.; Bizjak, I.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Buzatu, A.; Calamba, A.; Calancha, C.; Camarda, S.; Campanelli, M.; Campbell, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Carron, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cavalli-Sforza, M.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Cho, K.; Chokheli, D.; Chung, W. H.; Chung, Y. S.; Ciocci, M. A.; Clark, A.; Clarke, C.; Compostella, G.; Convery, M. E.; Conway, J.; Corbo, M.; Cordelli, M.; Cox, C. A.; Cox, D. J.; Crescioli, F.; Cuevas, J.; Culbertson, R.; Dagenhart, D.; d’Ascenzo, N.; Datta, M.; de Barbaro, P.; Dell’Orso, M.; Demortier, L.; Deninno, M.; Devoto, F.; d’Errico, M.; Di Canto, A.; Di Ruzza, B.; Dittmann, J. R.; D’Onofrio, M.; Donati, S.; Dong, P.; Dorigo, M.; Dorigo, T.; Ebina, K.; Elagin, A.; Eppig, A.; Erbacher, R.; Errede, S.; Ershaidat, N.; Eusebi, R.; Farrington, S.; Feindt, M.; Fernandez, J. P.; Field, R.; Flanagan, G.; Forrest, R.; Frank, M. J.; Franklin, M.; Freeman, J. C.; Funakoshi, Y.; Furic, I.; Gallinaro, M.; Garcia, J. E.; Garfinkel, A. F.; Garosi, P.; Gerberich, H.; Gerchtein, E.; Giagu, S.; Giakoumopoulou, V.; Giannetti, P.; Gibson, K.; Ginsburg, C. M.; Giokaris, N.; Giromini, P.; Giurgiu, G.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldin, D.; Goldschmidt, N.; Golossanov, A.; Gomez, G.; Gomez-Ceballos, G.; Goncharov, M.; González, O.; Gorelov, I.; Goshaw, A. T.; Goulianos, K.; Grinstein, S.; Grosso-Pilcher, C.; Group, R. C.; Guimaraes da Costa, J.; Hahn, S. R.; Halkiadakis, E.; Hamaguchi, A.; Han, J. Y.; Happacher, F.; Hara, K.; Hare, D.; Hare, M.; Harr, R. F.; Hatakeyama, K.; Hays, C.; Heck, M.; Heinrich, J.; Herndon, M.; Hewamanage, S.; Hocker, A.; Hopkins, W.; Horn, D.; Hou, S.; Hughes, R. E.; Hurwitz, M.; Husemann, U.; Hussain, N.; Hussein, M.; Huston, J.; Introzzi, G.; Iori, M.; Ivanov, A.; James, E.; Jang, D.; Jayatilaka, B.; Jeon, E. J.; Jindariani, S.; Jones, M.; Joo, K. K.; Jun, S. Y.; Junk, T. R.; Kamon, T.; Karchin, P. E.; Kasmi, A.; Kato, Y.; Ketchum, W.; Keung, J.; Khotilovich, V.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, Y. K.; Kim, Y. J.; Kimura, N.; Kirby, M.; Klimenko, S.; Knoepfel, K.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Kotwal, A. V.; Kreps, M.; Kroll, J.; Krop, D.; Kruse, M.; Krutelyov, V.; Kuhr, T.; Kurata, M.; Kwang, S.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, M.; Lander, R. L.; Lannon, K.; Lath, A.; Latino, G.; LeCompte, T.; Lee, E.; Lee, H. S.; Lee, J. S.; Lee, S. W.; Leo, S.; Leone, S.; Lewis, J. D.; Limosani, A.; Lin, C.-J.; Lindgren, M.; Lipeles, E.; Lister, A.; Litvintsev, D. O.; Liu, C.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysak, R.; Madrak, R.; Maeshima, K.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Margaroli, F.; Marino, C.; Martínez, M.; Mastrandrea, P.; Matera, K.; Mattson, M. E.; Mazzacane, A.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; McNulty, R.; Mehta, A.; Mehtala, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moed, S.; Moggi, N.; Mondragon, M. N.; Moon, C. S.; Moore, R.; Morello, M. J.; Morlock, J.; Movilla Fernandez, P.; Mukherjee, A.; Muller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Neubauer, M. S.; Nielsen, J.; Nodulman, L.; Noh, S. Y.; Norniella, O.; Oakes, L.; Oh, S. H.; Oh, Y. D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagan Griso, S.; Pagliarone, C.; Palencia, E.; Papadimitriou, V.; Paramonov, A. A.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pellett, D. E.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Pianori, E.; Pilot, J.; Pitts, K.; Plager, C.; Pondrom, L.; Poprocki, S.; Potamianos, K.; Prokoshin, F.; Pranko, A.; Ptohos, F.; Punzi, G.; Rahaman, A.; Ramakrishnan, V.; Ranjan, N.; Redondo, I.; Renton, P.; Rescigno, M.; Riddick, T.; Rimondi, F.; Ristori, L.; Robson, A.; Rodrigo, T.; Rodriguez, T.; Rogers, E.; Rolli, S.; Roser, R.; Ruffini, F.; Ruiz, A.; Russ, J.; Rusu, V.; Safonov, A.; Sakumoto, W. K.

    2012-08-01

    We present a search for the standard model Higgs boson produced in association with a W± boson. This search uses data corresponding to an integrated luminosity of 7.5 fb?¹ collected by the CDF detector at the Tevatron. We select WH?l?bb¯ candidate events with two jets, large missing transverse energy, and exactly one charged lepton. We further require that at least one jet be identified to originate from a bottom quark. Discrimination between the signal and the large background is achieved through the use of a Bayesian artificial neural network. The number of tagged events and their distributions are consistent with the standard model expectations. We observe no evidence for a Higgs boson signal and set 95% C.L. upper limits on the WH production cross section times the branching ratio to decay to bb¯ pairs, ?(pp¯?W±H)×B(H?bb¯), relative to the rate predicted by the standard model. For the Higgs boson mass range of 100 to 150 GeV/c² we set observed (expected) upper limits from 1.34 (1.83) to 38.8 (23.4). For 115 GeV/c² the upper limit is 3.64 (2.78). The combination of the present search with an independent analysis that selects events with three jets yields more stringent limits ranging from 1.12 (1.79) to 34.4 (21.6) in the same mass range. For 115 and 125 GeV/c² the upper limits are 2.65 (2.60) and 4.36 (3.69), respectively.

  18. Measurement of the W+- + b anti-b cross-section in 695-pb-1 of p anti-p collisions at CDF II.

    SciTech Connect (OSTI)

    Soderberg, Mitchell Paul; /Michigan U.

    2006-09-01

    W{sup {+-}} + b{bar b} events contain the associated production of a W{sup {+-}} boson, a pair of bottom quarks (b{bar b}), and any number of additional partons. This process is of much importance at hadron collider experiments due to its role as a background source in searches for Standard Model Higgs boson and single top-quark production. In this thesis the results are presented for a measurement of the b-jet cross-section in W{sup {+-}} + b{bar b} events containing 1 or 2 jets in 695 pb{sup -1} of {radical}s =1.96 TeV p{bar p} collisions at the CDF experiment. This is the first measurement of the cross-section of W{sup {+-}} b{bar b} performed in any experiment. The cross-section is defined to be proportional to the number of b-jets from W{sup {+-}} b{bar b} events with one or two jets, and a leptonically decaying W{sup {+-}} with decay products passing kinematics cuts (p{sub T}({ell}{sup {+-}}) {ge} 20.0 GeV, |{eta}({ell}{sup {+-}})| {le} 1.1, p{sub T}({nu}) {ge} 25.0 GeV). The invariant mass distribution of jets identified as containing a long-lived hadron is fit with components for bottom, charm, and light-flavor to find the fraction due to true b-decays. Background b-jet sources are subtracted to isolate the contribution of W{sup {+-}} b{bar b} to the data. The cross-section is measured to be 0.90 {+-} 0.20(stat.) {+-} 0.26(syst.)pb, which compares well with the leading order theoretical prediction of 0.74 {+-} 0.18 pb.

  19. Combined CDF and Dzero Upper Limits on Standard Model Higgs Boson Production at High Mass (155-200 GeV/c2) with 3 fb-1 of data

    E-Print Network [OSTI]

    Tevatron New Phenomena; Higgs working group; CDF Collaboration; D0 Collaboration

    2008-08-05

    We combine results from CDF and DO searches for a standard model Higgs boson in ppbar collisions at the Fermilab Tevatron, at sqrt{s}=1.96 TeV. With 3.0 fb-1 of data analyzed at CDF, and at DO, the 95% C.L. upper limits on Higgs boson production are a factor of 1.2, 1.0 and 1.3 higher than the SM cross section for a Higgs boson mass of m_{H}=$165, 170 and 175 GeV, respectively. We exclude at 95% C.L. a standard model Higgs boson of m_H=170 GeV. Based on simulation, the ratios of the corresponding median expected upper limit to the Standard Model cross section are 1.2, 1.4 and 1.7. Compared to the previous Higgs Tevatron combination, more data and refined analysis techniques have been used. These results extend significantly the individual limits of each experiment and provide new knowledge on the mass of the standard model Higgs boson beyond the LEP direct searches.

  20. Search for a Higgs boson in the diphoton final state using the full CDF data set from proton-antiproton collisions at \\surds = 1.96 TeV

    E-Print Network [OSTI]

    the CDF Collaboration

    2012-07-26

    A search for a narrow Higgs boson resonance in the diphoton mass spectrum is presented based on data corresponding to 10 fb-1 of integrated luminosity from proton-antiproton collisions at \\surds = 1.96 TeV collected by the CDF experiment. In addition to searching for a resonance in the diphoton mass spectrum, we employ a multivariate discriminant technique for the first time in this channel at CDF. No evidence of signal is observed, and upper limits are set on the cross section times branching ratio of the resonant state as a function of Higgs boson mass. The limits are interpreted in the context of the standard model with an expected (observed) limit on the cross section times branching ratio of 9.9 (17.0) times the standard model prediction at the 95% credibility level for a Higgs boson mass of 125 GeV/c2. Moreover, a Higgs boson with suppressed couplings to fermions is excluded for masses below 114 GeV/c2 at the 95% credibility level.

  1. Measurement of the CP-Violating Phase beta_s in B0s -> J/Psi Phi Decays with the CDF II Detector

    SciTech Connect (OSTI)

    Aaltonen, T.; et al.

    2012-04-01

    We present a measurement of the \\CP-violating parameter \\betas using approximately 6500 $\\BsJpsiPhi$ decays reconstructed with the CDF\\,II detector in a sample of $p\\bar p$ collisions at $\\sqrt{s}=1.96$ TeV corresponding to 5.2 fb$^{-1}$ integrated luminosity produced by the Tevatron Collider at Fermilab. We find the \\CP-violating phase to be within the range $\\betas \\in [0.02, 0.52] \\cup [1.08, 1.55]$ at 68% confidence level where the coverage property of the quoted interval is guaranteed using a frequentist statistical analysis. This result is in agreement with the standard model expectation at the level of about one Gaussian standard deviation. We consider the inclusion of a potential $S$-wave contribution to the $\\Bs\\to J/\\psi K^+K^-$ final state which is found to be negligible over the mass interval $1.009 < m(K^+K^-)<1.028 \\gevcc$. Assuming the standard model prediction for the \\CP-violating phase \\betas, we find the \\Bs decay width difference to be $\\deltaG = 0.075 \\pm 0.035\\,\\textrm{(stat)} \\pm 0.006\\,\\textrm{(syst)} \\ps$. We also present the most precise measurements of the \\Bs mean lifetime $\\tau(\\Bs) = 1.529 \\pm 0.025\\,\\textrm{(stat)} \\pm 0.012\\,\\textrm{(syst)}$ ps, the polarization fractions $|A_0(0)|^2 = 0.524 \\pm 0.013\\,\\textrm{(stat)} \\pm 0.015\\,\\textrm{(syst)}$ and $|A_{\\parallel}(0)|^2 = 0.231 \\pm 0.014\\,\\textrm{(stat)} \\pm 0.015\\,\\textrm{(syst)}$, as well as the strong phase $\\delta_{\\perp}= 2.95 \\pm 0.64\\,\\textrm{(stat)} \\pm 0.07\\,\\textrm{(syst)} \\textrm{rad}$. In addition, we report an alternative Bayesian analysis that gives results consistent with the frequentist approach.

  2. Search for the Rare Decays B^+ -> mu^+ mu^- K^+, B^0 -> mu^+ mu^- K^*0(892), and B^0_s -> mu^+ mu^- phi at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Akimoto, T.; Albrow, M.G.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; /Fermilab

    2008-04-01

    The authors search for b {yields} s{mu}{sup +}{mu}{sup -} transitions in B meson (B{sup +}, B{sup 0}, or B{sub s}{sup 0}) decays with 924 pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. They find excesses with significances of 4.5, 2.9, and 2.4 standard deviations in the B{sup +} {yields} {mu}{sup +}{mu}{sup -}K{sup +}, B{sup 0} {yields} {mu}{sup +}{mu}{sup -}K*(892){sup 0}, and B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -}{phi} decay modes, respectively. Using B {yields} J/{psi}h (h - K{sup +}, K*(892){sup 0}, {phi}) decays as normalization channels, they report branching fractions for the previously observed B{sup +} and B{sup 0} decays as normalization channels, they report branching fractions for the previously observed B{sup +} and B{sup 0} decays, {Beta}(B{sup +} {yields} {mu}{sup +}{mu}{sup -}K{sup +}) = (0.59 {+-} 0.15 {+-} 0.04) x 10{sup -6}, and {Beta}(B{sup 0} {yields} {mu}{sup +}{mu}{sup -}K*(892){sup 0}) = (0.81 {+-} 0.30 {+-} 0.10) x 10{sup -6}, where the first uncertainty is statistical, and the second is systematic. These measurements are consistent with the world average results, and are competitive with the best available measurements. They set an upper limit on the relative branching fraction {Beta}(B{sub s}{sup 0}{yields}{mu}{sup +}{mu}{sup -}{phi})/{Beta}(B{sub s}{sup 0}{yields}J/{psi}{phi}) < 2.6(2.3) x 10{sup -3} at the 95(90)% confidence level, which is the most stringent to date.

  3. Search for the standard model Higgs boson produced in association with a Z boson in 7.9 fb[superscript ?1] of p[bar-over p] collisions at ?s = 1.96 TeV using the CDF II detector

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present a search for the standard model Higgs boson produced in association with a Z boson, using up to 7.9 fb[superscript ?1] of integrated luminosity from p[bar-over p] collisions collected with the CDF II detector. ...

  4. Search for the standard model Higgs boson decaying to a bb pair in events with one charged lepton and large missing transverse energy using the full CDF data set

    E-Print Network [OSTI]

    The CDF Collaboration

    2012-08-09

    We present a search for the standard model Higgs boson produced in association with a W boson in sqrt(s) = 1.96 TeV p-pbar collision data collected with the CDF II detector at the Tevatron corresponding to an integrated luminosity of 9.45 fb-1. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the W boson to an electron or muon and a neutrino, we set 95% credibility level upper limits on the WH production cross section times the H->bb branching ratio as a function of Higgs boson mass. At a Higgs boson mass of 125 GeV/c2 we observe (expect) a limit of 4.9 (2.8) times the standard model value.

  5. Measurement of Inclusive Jet Cross Sections in Z/gamma*(->e+e-) + jets Production in ppbar Collisions at s**(1/2) = 1.96 TeV with the CDF Detector

    SciTech Connect (OSTI)

    Salto Bauza, Oriol; /Barcelona, IFAE

    2008-04-01

    This Ph.D. thesis presents the measurement of inclusive jet cross sections in Z/{gamma}* {yields} e{sup +}e{sup -} events using 1.7 fb{sup -1} of data collected by the upgraded CDF detector during the Run II of the Tevatron. The Midpoint cone algorithm is used to search for jets in the events after identifying the presence of a Z/{gamma}* boson through the reconstruction of its decay products. The measurements are compared to next-to-LO (NLO) pQCD predictions for events with one and two jets in the final state. The perturbative predictions are corrected for the contributions of non-perturbative processes, like the underlying event and the fragmentation of the partons into jets of hadrons. These processes are not described by perturbation theory and must be estimated from phenomenological models. In this thesis, a number of measurements are performed to test different models of underlying event and hadronization implemented in LO plus parton shower Monte Carlo generator programs. Chapter 2 is devoted to the description of the theory of strong interactions and jet phenomenology at hadron colliders. Chapter 3 contains the description of the Tevatron collider and the CDF detector. The analysis is described in detail in Chapter 4. Chapter 5 shows the measurement of those observables sensitive to non-perturbative effects compared to the predictions from several Monte Carlo programs. Chapter 6 discusses the final results and the comparison with theoretical expectations. Finally, Chapter 7 is devoted to the conclusions.

  6. First search at CDF for the Higgs boson decaying to a W-boson pair in proton-antiproton collisions at the center-of-mass energy of 1.96 TeV

    SciTech Connect (OSTI)

    Chuang, Shan-Huei S.; /Wisconsin U., Madison

    2006-12-01

    By way of retaining the gauge invariance of the Standard Model (SM) and giving masses to the W{sup {+-}} and Z{sup 0} bosons and the fermions, the Higgs mechanism predicts the existence of a neutral scalar bosonic particle, whose mass is not exactly known. The Higgs boson is the only experimentally unconfirmed SM particle to date. This thesis documents a search for the Higgs boson in p{bar p} collisions at {radical}s = 1.96 TeV at the Tevatron, using 360 {+-} pb {sup -1} data collected by the Run II Collider Detector at Fermilab (CDF II), as part of the most important quest for contemporary particle physicists. The search was for a Higgs boson decaying to a pair of W{sup {+-}} bosons, where each W boson decays to an electron, a muon or a tau that further decays to an electron or a muon with associated neutrinos. Events with two charged leptons plus large missing energy were selected in data triggered on a high p{sub t} lepton and compared to the signal and backgrounds modeled using Monte Carlo and jet data. No signal-like excess was observed in data. Therefore, upper limits on the HWW production cross-section in the analyzed mass range were extracted using the binned likelihood maximum from distributions of dilepton azimuthal angle at 95% Bayesian credibility level (CL), as shown in the table below.

  7. Search for standard model Higgs boson production in association with a W boson using a matrix element technique at CDF in pp? collisions at ?s=1.96 TeV

    SciTech Connect (OSTI)

    Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bisello, D.; Bizjak, I.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Buzatu, A.; Calamba, A.; Calancha, C.; Camarda, S.; Campanelli, M.; Campbell, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Carron, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cavalli-Sforza, M.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Cho, K.; Chokheli, D.; Chung, W. H.; Chung, Y. S.; Ciobanu, C. I.; Ciocci, M. A.; Clark, A.; Clarke, C.; Compostella, G.; Convery, M. E.; Conway, J.; Corbo, M.; Cordelli, M.; Cox, C. A.; Cox, D. J.; Crescioli, F.; Cuevas, J.; Culbertson, R.; Dagenhart, D.; d’Ascenzo, N.; Datta, M.; de Barbaro, P.; Dell’Orso, M.; Demortier, L.; Deninno, M.; Devoto, F.; d’Errico, M.; Di Canto, A.; Di Ruzza, B.; Dittmann, J. R.; D’Onofrio, M.; Donati, S.; Dong, P.; Dorigo, M.; Dorigo, T.; Ebina, K.; Elagin, A.; Eppig, A.; Erbacher, R.; Errede, S.; Ershaidat, N.; Eusebi, R.; Farrington, S.; Feindt, M.; Fernandez, J. P.; Field, R.; Flanagan, G.; Forrest, R.; Frank, M. J.; Franklin, M.; Freeman, J. C.; Funakoshi, Y.; Furic, I.; Gallinaro, M.; Garcia, J. E.; Garfinkel, A. F.; Garosi, P.; Gerberich, H.; Gerchtein, E.; Giagu, S.; Giakoumopoulou, V.; Giannetti, P.; Gibson, K.; Ginsburg, C. M.; Giokaris, N.; Giromini, P.; Giurgiu, G.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldin, D.; Goldschmidt, N.; Golossanov, A.; Gomez, G.; Gomez-Ceballos, G.; Goncharov, M.; González, O.; Gorelov, I.; Goshaw, A. T.; Goulianos, K.; Grinstein, S.; Grosso-Pilcher, C.; Group, R. C.; Guimaraes da Costa, J.; Hahn, S. R.; Halkiadakis, E.; Hamaguchi, A.; Han, J. Y.; Happacher, F.; Hara, K.; Hare, D.; Hare, M.; Harr, R. F.; Hatakeyama, K.; Hays, C.; Heck, M.; Heinrich, J.; Herndon, M.; Hewamanage, S.; Hocker, A.; Hopkins, W.; Horn, D.; Hou, S.; Hughes, R. E.; Hurwitz, M.; Husemann, U.; Hussain, N.; Hussein, M.; Huston, J.; Introzzi, G.; Iori, M.; Ivanov, A.; James, E.; Jang, D.; Jayatilaka, B.; Jeon, E. J.; Jindariani, S.; Jones, M.; Joo, K. K.; Jun, S. Y.; Junk, T. R.; Kamon, T.; Karchin, P. E.; Kasmi, A.; Kato, Y.; Ketchum, W.; Keung, J.; Khotilovich, V.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, Y. K.; Kim, Y. J.; Kimura, N.; Kirby, M.; Klimenko, S.; Knoepfel, K.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Kotwal, A. V.; Kreps, M.; Kroll, J.; Krop, D.; Kruse, M.; Krutelyov, V.; Kuhr, T.; Kurata, M.; Kwang, S.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, M.; Lander, R. L.; Lannon, K.; Lath, A.; Latino, G.; LeCompte, T.; Lee, E.; Lee, H. S.; Lee, J. S.; Lee, S. W.; Leo, S.; Leone, S.; Lewis, J. D.; Limosani, A.; Lin, C.-J.; Lindgren, M.; Lipeles, E.; Lister, A.; Litvintsev, D. O.; Liu, C.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysak, R.; Madrak, R.; Maeshima, K.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Margaroli, F.; Marino, C.; Martínez, M.; Mastrandrea, P.; Matera, K.; Mattson, M. E.; Mazzacane, A.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; McNulty, R.; Mehta, A.; Mehtala, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moed, S.; Moggi, N.; Mondragon, M. N.; Moon, C. S.; Moore, R.; Morello, M. J.; Morlock, J.; Movilla Fernandez, P.; Mukherjee, A.; Muller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Neubauer, M. S.; Nielsen, J.; Nodulman, L.; Noh, S. Y.; Norniella, O.; Oakes, L.; Oh, S. H.; Oh, Y. D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagan Griso, S.; Pagliarone, C.; Palencia, E.; Papadimitriou, V.; Paramonov, A. A.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pellett, D. E.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Pianori, E.; Pilot, J.; Pitts, K.; Plager, C.; Pondrom, L.; Poprocki, S.; Potamianos, K.; Prokoshin, F.; Pranko, A.; Ptohos, F.; Punzi, G.; Rahaman, A.; Ramakrishnan, V.; Ranjan, N.; Redondo, I.; Renton, P.; Rescigno, M.; Riddick, T.; Rimondi, F.; Ristori, L.; Robson, A.; Rodrigo, T.; Rodriguez, T.; Rogers, E.; Rolli, S.; Roser, R.; Ruffini, F.; Ruiz, A.; Russ, J.; Rusu, V.; Safonov, A.

    2012-04-01

    This paper presents a search for standard model Higgs boson production in association with a W boson using events recorded by the CDF experiment in a data set corresponding to an integrated luminosity of 5.6 fb?¹. The search is performed using a matrix element technique in which the signal and background hypotheses are used to create a powerful discriminator. The discriminant output distributions for signal and background are fit to the observed events using a binned likelihood approach to search for the Higgs boson signal. We find no evidence for a Higgs boson, and 95% confidence level (C.L.) upper limits are set on ?(pp??WH)×B(H?bb¯). The observed limits range from 3.5 to 37.6 relative to the standard model expectation for Higgs boson masses between mH=100 GeV/c² and mH=150 GeV/c². The 95% C.L. expected limit is estimated from the median of an ensemble of simulated experiments and varies between 2.9 and 32.7 relative to the production rate predicted by the standard model over the Higgs boson mass range studied.

  8. Search for Standard Model Higgs Boson Production in Association with a $W$ Boson Using a Matrix Element Technique at CDF in $p\\bar{p}$ Collisions at $\\sqrt{s} = 1.96$ TeV

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2011-12-01

    This paper presents a search for standard model Higgs boson production in association with a W boson using events recorded by the CDF experiment in a dataset corresponding to an integrated luminosity of 5.6 fb{sup -1}. The search is performed using a matrix element technique in which the signal and background hypotheses are used to create a powerful discriminator. The discriminant output distributions for signal and background are fit to the observed events using a binned likelihood approach to search for the Higgs boson signal. We find no evidence for a Higgs boson, and 95% confidence level (C.L.) upper limits are set on {sigma}(p{bar p} {yields} WH) x {Beta}(H {yields} b{bar b}). The observed limits range from 3.5 to 37.6 relative to the standard model expectation for Higgs boson masses between m{sub H} = 100 GeV/c{sup 2} and m{sub H} = 150 GeV/c{sup 2}. The 95% C.L. expected limit is estimated from the median of an ensemble of simulated experiments and varies between 2.9 and 32.7 relative to the production rate predicted by the standard model over the Higgs boson mass range studied.

  9. Search for production of an ?(1S) meson in association with a W or Z boson using the full 1.96 TeV proton anti-proton collision data set at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; et al

    2015-03-17

    Production of the ?(1S) meson in association with a vector boson is a rare process in the standard model with a cross section predicted to be below the sensitivity of the Tevatron. Observation of this process could signify contributions not described by the standard model or reveal limitations with the current non-relativistic quantum-chromodynamic models used to calculate the cross section. We perform a search for this process using the full Run II data set collected by the CDF II detector corresponding to an integrated luminosity of 9.4/fb?¹. The search considers the ? ? ?? decay and the decay of themore »W and Z bosons into muons and electrons. In these purely leptonic decay channels, we observe one ?W candidate with an expected background of 1.2 ± 0.5 events, and one ?Z candidate with an expected background of 0.1 ± 0.1 events. Both observations are consistent with the predicted background contributions. The resulting upper limits on the cross section for ?+W/Z production are the most sensitive reported from a single experiment and place restrictions on potential contributions from non-standard-model physics.« less

  10. Search for standard model Higgs boson production in association with a W boson using a matrix element technique at CDF in pp? collisions at ?s=1.96 TeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; et al

    2012-04-02

    This paper presents a search for standard model Higgs boson production in association with a W boson using events recorded by the CDF experiment in a data set corresponding to an integrated luminosity of 5.6 fb?¹. The search is performed using a matrix element technique in which the signal and background hypotheses are used to create a powerful discriminator. The discriminant output distributions for signal and background are fit to the observed events using a binned likelihood approach to search for the Higgs boson signal. We find no evidence for a Higgs boson, and 95% confidence level (C.L.) upper limitsmore »are set on ?(pp??WH)×B(H?bb¯). The observed limits range from 3.5 to 37.6 relative to the standard model expectation for Higgs boson masses between mH=100 GeV/c² and mH=150 GeV/c². The 95% C.L. expected limit is estimated from the median of an ensemble of simulated experiments and varies between 2.9 and 32.7 relative to the production rate predicted by the standard model over the Higgs boson mass range studied.« less

  11. Search for production of an ?(1S) meson in association with a W or Z boson using the full 1.96 TeV proton anti-proton collision data set at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T. [Univ. of Helsinki, Helsinki (Finland); Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V.? E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bland, K.? R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H.? S.; Burkett, K.; Busetto, G.; Bussey, P.; Butti, P.; Buzatu, A.; Calamba, A.; Camarda, S.; Campanelli, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Cho, K.; Chokheli, D.; Clark, A.; Clarke, C.; Convery, M. E.; Conway, J.; Corbo, M.; Cordelli, M.; Cox, C.? A.; Cox, D.? J.; Cremonesi, M.; Cruz, D.; Cuevas, J.; Culbertson, R.; d’Ascenzo, N.; Datta, M.; de Barbaro, P.; Demortier, L.; Deninno, M.; D’Errico, M.; Devoto, F.; Di Canto, A.; Di Ruzza, B.; Dittmann, J.? R.; Donati, S.; D’Onofrio, M.; Dorigo, M.; Driutti, A.; Ebina, K.; Edgar, R.; Elagin, A.; Erbacher, R.; Errede, S.; Esham, B.; Farrington, S.; Fernández Ramos, J.? P.; Field, R.; Flanagan, G.; Forrest, R.; Franklin, M.; Freeman, J.? C.; Frisch, H.; Funakoshi, Y.; Galloni, C.; Garfinkel, A.? F.; Garosi, P.; Gerberich, H.; Gerchtein, E.; Giagu, S.; Giakoumopoulou, V.; Gibson, K.; Ginsburg, C.? M.; Giokaris, N.; Giromini, P.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldin, D.; Golossanov, A.; Gomez, G.; Gomez-Ceballos, G.; Goncharov, M.; González López, O.; Gorelov, I.; Goshaw, A.? T.; Goulianos, K.; Gramellini, E.; Grosso-Pilcher, C.; Group, R.? C.; Guimaraes da Costa, J.; Hahn, S.? R.; Han, J.? Y.; Happacher, F.; Hara, K.; Hare, M.; Harr, R.? F.; Harrington-Taber, T.; Hatakeyama, K.; Hays, C.; Heinrich, J.; Herndon, M.; Hocker, A.; Hong, Z.; Hopkins, W.; Hou, S.; Hughes, R.? E.; Husemann, U.; Hussein, M.; Huston, J.; Introzzi, G.; Iori, M.; Ivanov, A.; James, E.; Jang, D.; Jayatilaka, B.; Jeon, E.? J.; Jindariani, S.; Jones, M.; Joo, K.? K.; Jun, S.? Y.; Junk, T.? R.; Kambeitz, M.; Kamon, T.; Karchin, P.? E.; Kasmi, A.; Kato, Y.; Ketchum, W.; Keung, J.; Kilminster, B.; Kim, D.? H.; Kim, H.? S.; Kim, J. E.; Kim, M.? J.; Kim, S.? H.; Kim, S.? B.; Kim, Y.? J.; Kim, Y.? K.; Kimura, N.; Kirby, M.; Knoepfel, K.; Kondo, K.; Kong, D.? J.; Konigsberg, J.; Kotwal, A.? V.; Kreps, M.; Kroll, J.; Kruse, M.; Kuhr, T.; Kurata, M.; Laasanen, A.? T.; Lammel, S.; Lancaster, M.; Lannon, K.; Latino, G.; Lee, H.? S.; Lee, J.? S.; Leo, S.; Leone, S.; Lewis, J.? D.; Limosani, A.; Lipeles, E.; Lister, A.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lucà, A.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysak, R.; Madrak, R.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Marchese, L.; Margaroli, F.; Marino, P.; Matera, K.; Mattson, M.? E.; Mazzacane, A.; Mazzanti, P.; McNulty, R.; Mehta, A.; Mehtala, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moed, S.; Moggi, N.; Moon, C.? S.; Moore, R.; Morello, M.? J.; Mukherjee, A.; Muller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Nigmanov, T.; Nodulman, L.; Noh, S.? Y.; Norniella, O.; Oakes, L.; Oh, S.? H.; Oh, Y.? D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagliarone, C.; Palencia, E.; Palni, P.; Papadimitriou, V.; Parker, W.; Pauletta, G.; Paulini, M.; Paus, C.; Phillips, T.? J.; Piacentino, G.; Pianori, E.; Pilot, J.; Pitts, K.; Plager, C.; Pondrom, L.; Poprocki, S.; Potamianos, K.; Pranko, A.; Prokoshin, F.; Ptohos, F.; Punzi, G.; Redondo Fernández, I.; Renton, P.; Rescigno, M.; Rimondi, F.; Ristori, L.; Robson, A.; Rodriguez, T.; Rolli, S.; Ronzani, M.; Roser, R.; Rosner, J.? L.; Ruffini, F.; Ruiz, A.; Russ, J.; Rusu, V.; Sakumoto, W.? K.; Sakurai, Y.; Santi, L.; Sato, K.; Saveliev, V.; Savoy-Navarro, A.; Schlabach, P.; Schmidt, E.? E.; Schwarz, T.; Scodellaro, L.; Scuri, F.; Seidel, S.; Seiya, Y.; Semenov, A.; Sforza, F.; Shalhout, S.? Z.; Shears, T.; Shepard, P.? F.; Shimojima, M.; Shochet, M.; Shreyber-Tecker, I.; Simonenko, A.; Sliwa, K.; Smith, J.? R.; Snider, F.? D.; Song, H.; Sorin, V.; St. Denis, R.; Stancari, M.; Stentz, D.; Strologas, J.; Sudo, Y.; Sukhanov, A.; Suslov, I.; Takemasa, K.; Takeuchi, Y.; Tang, J.; Tecchio, M.; Teng, P.? K.; Thom, J.; Thomson, E.; Thukral, V.; Toback, D.

    2015-03-01

    Production of the ?(1S) meson in association with a vector boson is a rare process in the standard model with a cross section predicted to be below the sensitivity of the Tevatron. Observation of this process could signify contributions not described by the standard model or reveal limitations with the current non-relativistic quantum-chromodynamic models used to calculate the cross section. We perform a search for this process using the full Run II data set collected by the CDF II detector corresponding to an integrated luminosity of 9.4/fb?¹. The search considers the ? ? ?? decay and the decay of the W and Z bosons into muons and electrons. In these purely leptonic decay channels, we observe one ?W candidate with an expected background of 1.2 ± 0.5 events, and one ?Z candidate with an expected background of 0.1 ± 0.1 events. Both observations are consistent with the predicted background contributions. The resulting upper limits on the cross section for ?+W/Z production are the most sensitive reported from a single experiment and place restrictions on potential contributions from non-standard-model physics.

  12. Measurement of the CP-violating phase ?sJ/?? in Bs0?J/?? decays with the CDF II detector

    SciTech Connect (OSTI)

    Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bisello, D.; Bizjak, I.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Bousson, N.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Buzatu, A.; Calamba, A.; Calancha, C.; Camarda, S.; Campanelli, M.; Campbell, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Carron, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cavalli-Sforza, M.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Cho, K.; Chokheli, D.; Chung, W. H.; Chung, Y. S.; Ciocci, M. A.; Clark, A.; Clarke, C.; Compostella, G.; Convery, M. E.; Conway, J.; Corbo, M.; Cordelli, M.; Cox, C. A.; Cox, D. J.; Crescioli, F.; Cuevas, J.; Culbertson, R.; Dagenhart, D.; d’Ascenzo, N.; Datta, M.; de Barbaro, P.; Dell’Orso, M.; Demortier, L.; Deninno, M.; Devoto, F.; d’Errico, M.; Di Canto, A.; Di Ruzza, B.; Dittmann, J. R.; D’Onofrio, M.; Donati, S.; Dong, P.; Dorigo, M.; Dorigo, T.; Ebina, K.; Elagin, A.; Eppig, A.; Erbacher, R.; Errede, S.; Ershaidat, N.; Eusebi, R.; Farrington, S.; Feindt, M.; Fernandez, J. P.; Field, R.; Flanagan, G.; Forrest, R.; Frank, M. J.; Franklin, M.; Freeman, J. C.; Funakoshi, Y.; Furic, I.; Gallinaro, M.; Garcia, J. E.; Garfinkel, A. F.; Garosi, P.; Gerberich, H.; Gerchtein, E.; Giagu, S.; Giakoumopoulou, V.; Giannetti, P.; Gibson, K.; Ginsburg, C. M.; Giokaris, N.; Giromini, P.; Giurgiu, G.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldin, D.; Goldschmidt, N.; Golossanov, A.; Gomez, G.; Gomez-Ceballos, G.; Goncharov, M.; González, O.; Gorelov, I.; Goshaw, A. T.; Goulianos, K.; Grinstein, S.; Grosso-Pilcher, C.; Group, R. C.; Guimaraes da Costa, J.; Hahn, S. R.; Halkiadakis, E.; Hamaguchi, A.; Han, J. Y.; Happacher, F.; Hara, K.; Hare, D.; Hare, M.; Harr, R. F.; Hatakeyama, K.; Hays, C.; Heck, M.; Heinrich, J.; Herndon, M.; Hewamanage, S.; Hocker, A.; Hopkins, W.; Horn, D.; Hou, S.; Hughes, R. E.; Hurwitz, M.; Husemann, U.; Hussain, N.; Hussein, M.; Huston, J.; Introzzi, G.; Iori, M.; Ivanov, A.; James, E.; Jang, D.; Jayatilaka, B.; Jeon, E. J.; Jindariani, S.; Jones, M.; Joo, K. K.; Jun, S. Y.; Junk, T. R.; Kamon, T.; Karchin, P. E.; Kasmi, A.; Kato, Y.; Ketchum, W.; Keung, J.; Khotilovich, V.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, Y. K.; Kim, Y. J.; Kimura, N.; Kirby, M.; Klimenko, S.; Knoepfel, K.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Kotwal, A. V.; Kreps, M.; Kroll, J.; Krop, D.; Kruse, M.; Krutelyov, V.; Kuhr, T.; Kurata, M.; Kwang, S.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, M.; Lander, R. L.; Lannon, K.; Lath, A.; Latino, G.; LeCompte, T.; Lee, E.; Lee, H. S.; Lee, J. S.; Lee, S. W.; Leo, S.; Leone, S.; Lewis, J. D.; Limosani, A.; Lin, C.-J.; Lindgren, M.; Lipeles, E.; Lister, A.; Litvintsev, D. O.; Liu, C.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysak, R.; Madrak, R.; Maeshima, K.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Margaroli, F.; Marino, C.; Martínez, M.; Mastrandrea, P.; Matera, K.; Mattson, M. E.; Mazzacane, A.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; McNulty, R.; Mehta, A.; Mehtala, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moed, S.; Moggi, N.; Mondragon, M. N.; Moon, C. S.; Moore, R.; Morello, M. J.; Morlock, J.; Movilla Fernandez, P.; Mukherjee, A.; Muller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Neubauer, M. S.; Nielsen, J.; Nodulman, L.; Noh, S. Y.; Norniella, O.; Oakes, L.; Oh, S. H.; Oh, Y. D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagan Griso, S.; Pagliarone, C.; Palencia, E.; Papadimitriou, V.; Paramonov, A. A.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pellett, D. E.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Pianori, E.; Pilot, J.; Pitts, K.; Plager, C.; Pondrom, L.; Poprocki, S.; Potamianos, K.; Prokoshin, F.; Pranko, A.; Ptohos, F.; Pueschel, E.; Punzi, G.; Rahaman, A.; Ramakrishnan, V.; Ranjan, N.; Redondo, I.; Renton, P.; Rescigno, M.; Riddick, T.; Rimondi, F.; Ristori, L.; Robson, A.; Rodrigo, T.; Rodriguez, T.; Rogers, E.; Rolli, S.; Roser, R.; Ruffini, F.; Ruiz, A.; Russ, J.; Rusu, V.

    2012-04-01

    We present a measurement of the CP-violating parameter ?sJ/?? using approximately 6500 B0s?J/?? decays reconstructed with the CDF II detector in a sample of pp? collisions at ?s=1.96 TeV corresponding to 5.2 fb?¹ integrated luminosity produced by the Tevatron collider at Fermilab. We find the CP-violating phase to be within the range ?sJ/??? [0.02,0.52]?[1.08,1.55] at 68% confidence level where the coverage property of the quoted interval is guaranteed using a frequentist statistical analysis. This result is in agreement with the standard model expectation at the level of about one Gaussian standard deviation. We consider the inclusion of a potential S-wave contribution to the B0s?J/?K?K? final state which is found to be negligible over the mass interval 1.009sJ/??, we find the B0s decay width difference to be ??s=0.075±0.035(stat)±0.006(syst) ps?¹. We also present the most precise measurements of the B0s mean lifetime ?(B0s)=1.529±0.025(stat)±0.012(syst) ps, the polarization fractions |A0(0)|²=0.524±0.013(stat)±0.015(syst) and |A II (0)|²=0.231±0.014(stat)±0.015(syst), as well as the strong phase ??=2.95±0.64(stat)±0.07(syst) rad. In addition, we report an alternative Bayesian analysis that gives results consistent with the frequentist approach.

  13. Measurement of the t-tbar production cross section in p-pbar collisions at s**(1/2) = 1.96 TeV using lepton+jets events in the CDF detector at Fermilab

    SciTech Connect (OSTI)

    Palencia, Enrique; /Cantabria Inst. of Phys. /Cantabria U., Santander

    2006-12-01

    The top quark is the most massive fundamental particle observed so far, and the study of its properties is interesting for several reasons ranging from its possible special role in electroweak symmetry breaking to its sensitivity to physics beyond the standard model (SM). In particular, the measurement of the top quark pair production cross section {sigma}{sub t{bar t}} is of interest as a test of QCD predictions. Recent QCD calculations done with perturbation theory to next-to-leading order predict {sigma}{sub t{bar t}} with an uncertainty of less than 15%, which motivate measurements of comparable precision. In this thesis, the author reports a measurement of the cross section for pair production of top quarks in the lepton+jets channel in 318 pb{sup -1} of p{bar p} collision data at {radical}s = 1.96 TeV. The data were recorded between March 2002 and September 2004, during Run II of the Tevatron, by the CDF II detector, a general purpose detector which combines charged particle trackers, sampling calorimeters, and muon detectors. processes in which a W boson is produced in association with several jets with large transverse momentum can be misidentified at t{bar t}, since they have the same signature. In order to separate the t{bar t} events from this background, they develop a method to tag b-jets based on tracking information from the silicon detector. The main event selection requires at least one tight (more restrictive) b tag in the event. As a cross check, they also measure the cross section using events with a loose (less restrictive) b tag and events which have at least two tight or at least two loose b tags. Background contributions from heavy flavor production processes, such as Wb{bar b}, Wc{bar c} or Wc, misidentified W bosons, electroweak processes, single top production, and mistagged jets are estimated using a combination of Monte Carlo calculations and independent measurements in control data samples. An excess over background in the number of events that contain a lepton, missing energy and three or more jets with at least one b-tag is assumed to be a signal of t{bar t} production and is used to measure the production cross section {sigma}{sub t{bar t}}.

  14. University of Illinois at Urbana-Champaign, 1304 W. Pennsylvania Ave., 338 AESB, Urbana, IL 61801 217.333.3570 abe.illinois.edu abe@illinois.edu

    E-Print Network [OSTI]

    Lee, Tonghun

    passed her MS defense on June 24, 2014. Her thesis was titled "An Agent-Based Model to Simulate Virus-Based Biocontrol of the Soybean Cyst Nematode, Heterodera Glycines." Matthew Harper, who successfully passed his MS

  15. D. acosta et al., the cdf collaboration,

    SciTech Connect (OSTI)

    Top Physics; Measurement of B /B at the Collid

    2005-05-27

    We present a measurement of the ratio of top-quark branching fractions R = {Beta}(t {yields} Wb)/{Beta}(t {yields} Wq) using lepton-plus-jets and dilepton data sets with integrated luminosity of {approx}162 pb{sup -1} collected with the Collider Detector at Fermilab during Run II of the Tevatron. The measurement is derived from the relative numbers of t{bar t} events with different multiplicity of identified secondary vertices. We set a lower limit of R > 0.61 at 95% confidence level.

  16. Structural analysis of the CDF transporter cart

    SciTech Connect (OSTI)

    Leininger, M.

    1982-11-17

    The transporter cart serves as a dolly to move the large toroids (539 tons) and the Roman arches (600 tons) which are part of the central detector. ANSYS has been used to compute deflections and stresses in this cart.

  17. Search for WW and WZ production in lepton, neutrino plus jets final states at CDF Run II and Silicon module production and detector control system for the ATLAS SemiConductor Tracker

    SciTech Connect (OSTI)

    Sfyrla, Anna; /Geneva U.

    2008-03-01

    In the first part of this work, we present a search for WW and WZ production in charged lepton, neutrino plus jets final states produced in p{bar p} collisions with {radical}s = 1.96 TeV at the Fermilab Tevatron, using 1.2 fb{sup -1} of data accumulated with the CDF II detector. This channel is yet to be observed in hadron colliders due to the large singleWplus jets background. However, this decay mode has a much larger branching fraction than the cleaner fully leptonic mode making it more sensitive to anomalous triple gauge couplings that manifest themselves at higher transverse W momentum. Because the final state is topologically similar to associated production of a Higgs boson with a W, the techniques developed in this analysis are also applicable in that search. An Artificial Neural Network has been used for the event selection optimization. The theoretical prediction for the cross section is {sigma}{sub WW/WZ}{sup theory} x Br(W {yields} {ell}{nu}; W/Z {yields} jj) = 2.09 {+-} 0.14 pb. They measured N{sub Signal} = 410 {+-} 212(stat) {+-} 102(sys) signal events that correspond to a cross section {sigma}{sub WW/WZ} x Br(W {yields} {ell}{nu}; W/Z {yields} jj) = 1.47 {+-} 0.77(stat) {+-} 0.38(sys) pb. The 95% CL upper limit to the cross section is estimated to be {sigma} x Br(W {yields} {ell}{nu}; W/Z {yields} jj) < 2.88 pb. The second part of the present work is technical and concerns the ATLAS SemiConductor Tracker (SCT) assembly phase. Although technical, the work in the SCT assembly phase is of prime importance for the good performance of the detector during data taking. The production at the University of Geneva of approximately one third of the silicon microstrip end-cap modules is presented. This collaborative effort of the university of Geneva group that lasted two years, resulted in 655 produced modules, 97% of which were good modules, constructed within the mechanical and electrical specifications and delivered in the SCT collaboration for assembly on the end-cap disks. The SCT end-caps and barrels consist of 4088 silicon modules, with a total of 6.3 million readout channels. The coherent and safe operation of the SCT during commissioning and subsequent operation is the essential task of the Detector Control System (DCS). The main building blocks of the DCS are the cooling system, the power supplies and the environmental system. The DCS has been initially developed for the SCT assembly phase and this system is described in the present work. Particular emphasis is given in the environmental hardware and software components, that were my major contributions. Results from the DCS testing during the assembly phase are also reported.

  18. Determination of W boson helicity fractions in top quark decays in p anti-p collisions at CDF Run II and production of endcap modules for the ATLAS Silicon Tracker

    SciTech Connect (OSTI)

    Moed, Shulamit; /Geneva U.

    2007-01-01

    The thesis presented here includes two parts. The first part discusses the production of endcap modules for the ATLAS SemiConductor Tracker at the University of Geneva. The ATLAS experiment is one of the two multi-purpose experiments being built at the LHC at CERN. The University of Geneva invested extensive efforts to create an excellent and efficient module production site, in which 655 endcap outer modules were constructed. The complexity and extreme requirements for 10 years of LHC operation with a high resolution, high efficiency, low noise tracking system resulted in an extremely careful, time consuming production and quality assurance of every single module. At design luminosity about 1000 particles will pass through the tracking system each 25 ns. In addition to requiring fast tracking techniques, the high particle flux causes significant radiation damage. Therefore, modules have to be constructed within tight and accurate mechanical and electrical specification. A description of the ATLAS experiment and the ATLAS Semiconductor tracker is presented, followed by a detailed overview of the module production at the University of Geneva. My personal contribution to the endcap module production at the University of Geneva was taking part, together with other physicists, in selecting components to be assembled to a module, including hybrid reception tests, measuring the I-V curve of the sensors and the modules at different stages of the production, thermal cycling the modules and performing electrical readout tests as an initial quality assurance of the modules before they were shipped to CERN. An elaborated description of all of these activities is given in this thesis. At the beginning of the production period the author developed a statistics package which enabled us to monitor the rate and quality of the module production. This package was then used widely by the ATLAS SCT institutes that built endcap modules of any type, and kept being improved and updated. The production monitoring and summary using this package is shown in this thesis. The second part of the thesis reports a measurement of the fraction of longitudinal and right-handed helicity states of W bosons in top quark decays. This measurement was done using 955 pb{sup -1} of data collected with the CDF detector at the TEvatron, where protons and anti-protons are collided with a center-of-mass energy of 1.96 TeV. the helicity fraction measurements take advantage of the fact that the angular distribution of the W boson decay products depends on the helicity state of the W which they originate from. They analyze t{bar t} events in the 'lepton+jets' channel and look at the leptonic side of decay. They construct templates for the distribution of cos{theta}*, the angle between the charged lepton and the W flight direction in the rest frame of the top quark. Using Monte Carlo techniques, they construct probability distributions ('templates') for cos{theta}* in the case of left-handed, longitudinal and right-handed Ws and a template for the background model. They extract the W helicity fractions using an unbinned likelihood fitter based on the information of these templates. The Standard Model predicts the W helicity fractions to be about 70% longitudinal and 30% left-handed, while the fraction of right-handed W bosons in top decays is highly suppressed and vanishes when neglecting the mass of the b quark.

  19. Search for B{sub c}{sup {plus_minus}} {yields} J/{psi}{pi}{sup {plus_minus}} and the B rare decays B{sub d}{sup 0} {yields} {mu}{sup +} mu{sup {minus}} and B{sub s}{sup 0} {yields} {mu}{sup +} {mu}{sup {minus}} at CDF

    SciTech Connect (OSTI)

    Speer, T. [Geneva Univ. (Switzerland); CDF Collaboration

    1996-09-01

    We present a search for the {ital B}{sup +}{sub {ital c}}{yields}{ital J}/{Psi}{pi}{sup {+-}}. We measure the limit of {delta}({ital B}{sup {+-}}{sub {ital c}}){center_dot}{ital BR(B{sub c}{sup {+-}}{yields}J/{Psi}{pi}{sup {+-}})/{delta}(B{sup +-}{sub u}){center_dot}BR(B{sup {+-}}{sub u}{yields}J/{Psi}{Kappa}{sup {+-}}}) as a function of the {ital B{sup {+-}}{sub c}} lifetime, using {approx} 110 {ital pb}{sup -1} of data collected at the Collider Detector at Fermilab (CDF). We present also a search for the rare decays {ital B}{sup 0}{sub {ital d}}{yields}{mu}{sup +}{mu}{sup -} and {ital B}{sup 0}{sub {ital s}}{yields}{mu}{sup +}{mu}{sup -}, setting an upper limit on their respective branching ratios.

  20. Solvent screening methodology for in situ ABE extractive fermentation H. Gonzlez-Peas1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    also be used as a feedstock in petrochemical industry. Therefore, increasing attention has been microorganisms (Ezeji et al 2010), and (c) integration of the fermentation process with in situ primary

  1. Evidence for Hydrogen Induced Vacancies in Plutonium Metal Scott Richmond, Joseph Anderson, Jeff Abes

    E-Print Network [OSTI]

    Evidence for Hydrogen Induced Vacancies in Plutonium Metal Scott Richmond, Joseph Anderson, Jeff@lanl.gov INTRODUCTION The solubility of hydrogen in plutonium metal was recently measured [1]. Based on the solubility data, the properties of plutonium and helium release data, the authors will show that hydrogen induced

  2. ABE Agricultural and Biological Engineering F9 ADDL Animal Disease Diagnostic Lab G10

    E-Print Network [OSTI]

    Aerospace Science Laboratory C11 AGAD Agricultural Administration Building G8 AHF Animal Holding Facility G Pete Dye Clubhouse C1 EE Electrical Engineering Building H6 EEL Entomology Environmental Laboratory G8 F9 FOPN Flight Operations Building B11 FORS Forestry Building G8 FPRD Forest Products Building G8

  3. Clustering Words with the MDL Principle Hang Li and Naoki Abe

    E-Print Network [OSTI]

    .cl.nee.co.jp Abstract We address the probhml of automaticMly constructing a thesaurus by clustering words based pp-attachment disambiguation ex- periments using an automaticMly con- structed thesaurus. Our experimental results indicate that such a thesaurus can be used to improve accuracy in disam- biguation. 1

  4. pH-Dependent Modelling of ABE Fermentation in Clostridium acetobutylicum

    E-Print Network [OSTI]

    Wolkenhauer, Olaf

    or less constant level above that of the external medium, when it produces weak acids (acetic & butyric, Germany Butanol EthanolAcetate Butyrate Acetone Acetyl-CoA Acetoacetyl-CoA Butyryl-CoA Glucose Fig.1 in solventogenesis [3]: acetoacetyl-CoA: acetate coenzyme A-transferase (magenta), acetoacetyl-CoA: butyrate coenzyme

  5. ABE2011SpringAwardsBanquet NewProgramsDrawStudentsfromEuropeandBrazil

    E-Print Network [OSTI]

    Lee, Tonghun

    of Agricultural Engineering, teaching machinery management, farm tractors and farm machinery design. He wentEngineering RealisticSolutionsintheRealWorld ABEAlumniGathertoSupportIlliniPullers at¼-ScaleDesign Engineering at Illinois in 1960. He made numerous significant contributions to the field of machinery

  6. CDF note 10978 Search for Rare Z Decays into Two Reconstructed Photons at CDF

    E-Print Network [OSTI]

    Quigg, Chris

    as an isolated photon, with only a slightly smaller central photon identification efficiency. With such low not measure a limit on the 0 0 decay mode. In Z decays involving a 0 , the neutral pion is isolated (not is challenging. However, with the abundance of Z bosons produced in high-energy hadron colliders

  7. Detection of spin polarization with a side-coupled quantum dot Tomohiro Otsuka,* Eisuke Abe, Yasuhiro Iye, and Shingo Katsumoto

    E-Print Network [OSTI]

    Iye, Yasuhiro

    -1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan Received 25 February 2009; revised manuscript received 22 April generation of electron-spin polarization in non- magnetic semiconductors is a key technology in the devel voltage VP on QD is driven to oscillate as a rectangular wave with the amplitude Vamp and the center

  8. CDF/ANAL/TOP/CDFR/4025 Version 2.0

    E-Print Network [OSTI]

    Quigg, Chris

    . Campagnari, 7 M. Campbell, 19 A. Caner, 26 W. Carithers, 17 D. Carlsmith, 37 A. Castro, 24 D. Cauz, 26 Y. Cen

  9. Press Pass - Press Release - CDF B_s

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    official: They have discovered the quick-change behavior of the B-sub-s meson, which switches between matter and antimatter 3 trillion times a second. BATAVIA, Illinois -...

  10. CDF/MEMO/TRIGGER/CDFR/5511 March 15, 2001

    E-Print Network [OSTI]

    . Semenov, M. Shochet, T. Speer, F. Spinella, H. Vataga, X. Wu, U. Yang, L. Zanello, A. M. Zanetti Abstract

  11. CDF note 7555 Combined results from B 0

    E-Print Network [OSTI]

    Fermilab

    Research; the Comisi#19;on Interministerial de Ciencia y Tecnolog#19;#16;a, Spain; in part by the European

  12. CDF/PHYS/MONTECARLO/PUBLIC/5938 April 27, 2002

    E-Print Network [OSTI]

    matrix element generators for many particles such as MADGRAPH (b) NLO 1-Loop automated calculators, with Steve Mrenna being the point person. The CD has devoted money, time, and resources to it, and

  13. Press Pass - Press Release - CDF B_s

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    State University, Detroit, Michigan 60. University of Wisconsin, Madison, Wisconsin 61. Yale University, New Haven, Connecticut Return to Current Press Releases last modified 411...

  14. CDF/MEMO/TRIGGER/CDFR/5424 Version 1.0

    E-Print Network [OSTI]

    /4) + CSP Hit Bit 05 CMU High Pt Stub + CMP Stub (3/4) + CSP Hit 1 #12; Bit 06 Dimuon Test Bit - 2 CMU Low > 120deg) Bit 18 Cosmic Trigger II : 2 CMP Stubs (3/4) + CSP Hits (Top & Bottom) Bit 19 Bunch Zero Crossing Trigger Note A: CSP hits will be included in the de#12;nition of trigger bits 4 and 5. However, we

  15. Press Pass - Press Release - CDF B_s

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    States are Austria, Belgium, Bulgaria, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Netherlands, Norway, Poland, Portugal, Slovakia, Spain,...

  16. ARM - Reading netCDF, HDF, and GRIB Files

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrnBarrow, Alaska OutreachCalendarPress Releases Related2 ScienceObjectives

  17. ARM - Reading netCDF, HDF, and GRIB Files

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrnBarrow, Alaska OutreachCalendarPress Releases Related2

  18. Higgs bosons searches at CDF (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article)lasers (Journal Article) |different|(Journal Article)Higgs bosons

  19. Higgs bosons searches at CDF (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article)lasers (Journal Article) |different|(Journal Article)Higgs bosonsHiggs

  20. CDF Note 11045 Combined CDF Search for Single Top Quark s-channel Production in pp Collisions at

    E-Print Network [OSTI]

    Quigg, Chris

    algoritm in use. The sample is subidived according to the lepton category and the number of b-tagged jets

  1. 2014 Water Power Program Peer Review Compiled Presentations:...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    University SLH100 Demonstration Project-Abe Schneider, Natel Energy, Inc. SLH Timing Belt Powertrain-Abe Schneider, Natel Energy, Inc. Scale-Up of Low-Head SLH HydroEngine-Abe...

  2. Estimation of Food Consumption fr om Pellets Cast by Captive Ural Owls ( Strix uralensis ) Aki Higuchi and Manabu T . Abe1

    E-Print Network [OSTI]

    551 Estimation of Food Consumption fr om Pellets Cast by Captive Ural Owls ( Strix uralensis ) Aki of the Ural Owl ( Strix uralensis) based on pellet analysis. Though it is possible to identify pr ey items- tat and manage for this species. In this study, ingested food and cast pellet mass were quantified

  3. FERMILABPUB95/022E CDF/PUB/TOP/PUBLIC/3040

    E-Print Network [OSTI]

    Quigg, Chris

    , 7 M. Campbell, 17 A. Caner, 7 W. Carithers, 15 D. Carlsmith, 34 A. Castro, 21 G. Cauz, 24 Y. Cen, 26

  4. CDF/ANAL/ELECTROWEAK/CDFR/2951 Limits on WWZ and WW fl couplings

    E-Print Network [OSTI]

    Quigg, Chris

    , 1 J. Cammerata, 12 C. Campagnari, 7 M. Campbell, 16 A. Caner, 7 W. Carithers, 14 D. Carlsmith, 34 A

  5. FERMILABPUB95/038E CDF/PUB/JET/PUBLIC/2957

    E-Print Network [OSTI]

    Quigg, Chris

    . Campagnari, 7 M. Campbell, 16 A. Caner, 7 W. Carithers, 14 D. Carlsmith, 34 A. Castro, 20 Y. Cen, 21 F

  6. CDF/PUB/EXOTIC/PUBLIC/4460 FERMILABPUB98/145E

    E-Print Network [OSTI]

    Quigg, Chris

    . Burkett, 20 G. Busetto, 25 A. Byon­ Wagner, 7 K. L. Byrum, 1 M. Campbell, 20 A. Caner, 27 W. Carithers, 18

  7. FERMILABPUB94/411E CDF/TOP/ANAL/CDFR/2365

    E-Print Network [OSTI]

    Quigg, Chris

    ­Wagner, 7 K. L. Byrum, 1 J. Cammerata, 12 C. Campagnari, 7 M. Campbell, 16 A. Caner, 7 W. Carithers, 14 D

  8. FERMILABPUB94/097E CDF/PUB/TOP/PUBLIC/2561

    E-Print Network [OSTI]

    Quigg, Chris

    , 20 A. Byon­Wagner, 7 K. L. Byrum, 1 C. Campagnari, 7 M. Campbell, 16 A. Caner, 7 W. Carithers, 14 D

  9. CDF/PUB/BOTTOM/PUBLIC/3231 FermilabPUB95/270E

    E-Print Network [OSTI]

    Quigg, Chris

    . Campagnari, 7 M. Campbell, 16 A. Caner, 7 W. Carithers, 14 D. Carlsmith, 34 A. Castro, 20 Y. Cen, 21 F

  10. Observation of Single Top Quark Production and Measurement of |Vtb| with CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; /Helsinki Inst. of Phys.; Adelman, J.; /Chicago U., EFI; Alvarez Gonzalez, B.; /Cantabria Inst. of Phys.; Amerio, S.; /INFN, Padua; Amidei, D.; /Michigan U.; Anastassov, A.; /Northwestern U.; Annovi, A.; /Frascati; Antos, J.; /Comenius U.; Apollinari, G.; /Fermilab; Appel, J.; /Fermilab; Apresyan, A.; /Purdue U. /Waseda U.

    2010-04-01

    We report the observation of electroweak single top quark production in 3.2 fb{sup -1} of p{bar p} collision data collected by the Collider Detector at Fermilab at {radical}s = 1.96 TeV. Candidate events in the W+jets topology with a leptonically decaying W boson are classified as signal-like by four parallel analyses based on likelihood functions, matrix elements, neural networks, and boosted decision trees. These results are combined using a super discriminant analysis based on genetically evolved neural networks in order to improve the sensitivity. This combined result is further combined with that of a search for a single top quark signal in an orthogonal sample of events with missing transverse energy plus jets and no charged lepton. We observe a signal consistent with the standard model prediction but inconsistent with the background-only model by 5.0 standard deviations, with a median expected sensitivity in excess of 5.9 standard deviations. We measure a production cross section of 2.3{sub -0.5}{sup +0.6}(stat + sys) pb, extract the CKM matrix element value |V{sub tb}| = 0.91{sub -0.11}{sup +0.11}(stat + sys) {+-} 0.07(theory), and set a lower limit |V{sub tb}| > 0.71 at the 95% confidence level, assuming m{sub t} = 175 GeV/c{sup 2}.

  11. First measurement of the w boson mass with CDF in Run 2

    SciTech Connect (OSTI)

    Stelzer-Chilton, Oliver

    2005-10-01

    This thesis describes a first measurement of the W Boson mass through the decay into a muon and a neutrino in Run 2 of the Tevatron. The W Bosons are produced in proton-antiproton collisions at a center of mass energy of 1.96 TeV. The data sample used for this analysis corresponds to 200 pb{sup -1} recorded by the upgraded Collider Detector at Fermilab. The most important quantity in this measurement is the momentum of the muon measured in a magnetic spectrometer which is calibrated using the two quarkonium resonances J/{Psi} and {Upsilon}(1S). Systematic uncertainties arise from the modeling of the recoil when the W Boson is produced, the momentum calibration, the modeling of W Boson production and decay dynamics and backgrounds. The result is: M{sub W} = 80408 {+-} 50(stat.) {+-} 57(syst.) MeV/c{sup 2}.

  12. Search for Hadronic Resonances of W/Z in Photon Events at CDF

    SciTech Connect (OSTI)

    Bocci, Andrea

    2005-01-01

    The authors present a study of the p{bar p} {yields} W(Z){gamma} {yields} {gamma}q{bar q} process at the center-of-mass energy {radical}s = 1.96 TeV using data collected by the Collider Detector at Fermilab. The analysis is based on the selection of low transverse momentum photons produced in association with at least two jets. A modification of an existing photon trigger was studied and implemented in the data acquisition system to enhance the sensitivity of this analysis. The data presented are from approximately 184 pb{sup -1} of integrated luminosity collected by this new trigger. A preliminary event sample is obtained requiring a central photon with E{sub T} > 12 GeV and two jets with E{sub T} > 15 GeV. The corresponding efficiency is studied using a Monte Carlo simulation of the W(Z){gamma} {yields} {gamma}q{bar q} based on Standard Model predictions. Monte Carlo estimation of the background is not necessary as it is measured from the data. A more advanced selection based on a Neural Network method improves the signal-to-noise ratio from 1/333 to 1/71, and further optimization of the dijet mass search region increases the ratio to its final value of 1/41. No evidence of a W/Z {yields} q{bar q} peak in the dijet mass distribution is visible when the background contribution is subtracted. Using a fully Bayesian approach, the 95% confidence level upper limit on {sigma}(p{bar p} {yields} W{gamma}) x {Beta}(W {yields} q{bar q}) + {sigma}(p{bar p} {yields} Z{gamma}) x {Beta}(Z {yields} q{bar q}) is calculated to be 54 pb, which is consistent with the Standard Model prediction of 20.5 pb.

  13. Search for standard model Higgs boson production in association with a W boson at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; et al.

    2012-03-01

    We present a search for the standard model Higgs boson production in association with a $W$ boson in proton-antiproton collisions ($p\\bar{p}\\rightarrow W^\\pm H \\rightarrow \\ell\

  14. Search for Technicolor Particles Produced in Association with a W Boson at CDF

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a search for the technicolor particles ?[subscript T] and ?[subscript T] in the process pp? ??[subscript T]?W?[subscript T] at a center of mass energy of ?s=1.96??TeV. The search uses a data sample corresponding ...

  15. Measurement of tt? spin correlation in pp? collisions using the CDF II detector at the Tevatron

    E-Print Network [OSTI]

    Bauer, Gerry P.

    The tt? spin correlation at production is a fundamental prediction of QCD and a potentially incisive test of new physics coupled to top quarks. We measure the tt? spin state in pp? collisions at ?s=1.96??[square root of ...

  16. Combination of CDF and D0 results on the W boson mass and width

    E-Print Network [OSTI]

    Baringer, Philip S.; Bean, Alice; Coppage, Don; Hebert, C.; Abazov, V. M.; Abbott, B.; Abdesselam, A.; Abolins, M.; Abramov, V.; Acharya, B. S.

    2004-11-17

    the Tevatron collider average of the directly measured W boson width ?W=2.115±0.105??GeV. We describe a new joint analysis of the direct W mass and width measurements. Assuming the validity of the standard model, we combine the directly measured W boson width...

  17. Searches for New Physics Using High Mass Dimuons at the CDF II Experiment

    SciTech Connect (OSTI)

    Karagoz Unel, Muge

    2004-12-01

    This work describes the measurement of inclusive jets cross section in the D0 experiment. This cross section is computed as a function of jet transverse momentum, in several rapidity intervals. This quantity is sensitive to the proton structure and is crucial for the determination of parton distribution functions (PDF), essentially for the gluon at high proton momentum fraction. The measurement presented here gives the first values obtained for Tevatron Run II for the cross section in several rapidity intervals, for an integrated luminosity of 143 pb{sup -1}. The results are in agreement, within the uncertainties, with theoretical Standard Model predictions, showing no evidence for new physics. This work points out the aspects of the detector which need better understanding to reach Run I precision and to constrain the PDFs.

  18. Search for standard model Higgs boson production in association with a W boson at CDF

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a search for the standard model Higgs boson production in association with a W boson in proton-antiproton collisions (pp? ?W[superscript ±]H???bb? ) at a center of mass energy of 1.96 TeV. The search employs ...

  19. Measurements of the Angular Distributions in the Decays B ? K(*) µ+µ- at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T; Gonzalez, B. Alvarez; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A; Apresyan, A.; et al

    2012-02-24

    We reconstruct the decays B ? K(*) µ+µ- and measure their angular distributions in pp? collisions at ?s = 1.96 TeV using a data sample corresponding to an integrated luminosity of 6.8 fb-1. The transverse polarization asymmetry AT(2) and the time-reversal-odd charge-and-parity asymmetry Aim are measured for the first time, together with the K* longitudinal polarization fraction FL and the µ on forward-backward asymmetry AFB, for the decays B0?K*0µ+µ- and B0?K*+µ+µ-. Our results are among the most accurate to date and consistent with those from other experiments.

  20. CDF/DOC/TRIGGER/CDFR/8533 Mezzanine card specifications for Level-2 Calorimeter

    E-Print Network [OSTI]

    Trieste 5 INFN Padova 6 Purdue University 7 University of Chicago 8 CIEMAT (Madrid) 9 Fermi National

  1. Search for supersymmetry using rare B to mumu decays at CDF run II 

    E-Print Network [OSTI]

    Krutelyov, Vyacheslav

    2006-04-12

    lepton generations, ordered in increasing constituent mass ? corresponding to the pairs given in Eqs. (2.1) and (2.2). The flavor changing interactions involve only the left-handed quark field inter- actions with the W? bosons, also referred to as a... with the description of the benchmark models sensitive to the present analysis, such as mSUGRA with possible RPV or Higgs non-universality extensions, and MSO10SM model (a minimal SUSY GUT SO(10) model). Supersymmetry is the symmetry between bosons and fermions. A...

  2. Limit Setting and Optimization for New Particle Production at CDF using Photon Timing 

    E-Print Network [OSTI]

    White, Randy Glenn

    2014-07-17

    . Such particles can be produced in versions of Supersymmetry, and even be produced as the decay of a Higgs boson. Since the photons that may have come from such events will arrive at the surface of the detector later than photons produced directly from a primary...

  3. Search for WW and WZ production in lepton plus jets final state at CDF

    E-Print Network [OSTI]

    Xie, Si

    We present a search for WW and WZ production in final states that contain a charged lepton (electron or muon) and at least two jets, produced in ?s=1.96??TeV pp? collisions at the Fermilab Tevatron, using data corresponding ...

  4. Measurement of the top quark mass with dilepton events selected using neuroevolution at CDF

    E-Print Network [OSTI]

    CDF Collaboration; T. Aaltonen

    2009-04-14

    We report a measurement of the top quark mass $M_t$ in the dilepton decay channel $t\\bar{t}\\to b\\ell'^{+}\

  5. Global search for new physics at CDF (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article) |productionPatent:CompressionSciTechwithinProduced atGenesConference:

  6. Global search for new physics at CDF (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article) |productionPatent:CompressionSciTechwithinProduced

  7. Search for hadronic resonance in multijet final states with the CDF

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference) | SciTechsaturatedcrystals (Journal Article)(Journal Article) |detector

  8. Search for hadronic resonance in multijet final states with the CDF

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference) | SciTechsaturatedcrystals (Journal Article)(Journal Article)

  9. Searching for new physics at CDF (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference) |Janka,Ferrara U./INFN,TaÅŸ, Neslihan"RonSearches

  10. Searching for new physics at CDF (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference) |Janka,Ferrara U./INFN,TaÅŸ, Neslihan"RonSearchesSearching for new

  11. Sleuth at CDF: A Quasi-model-independent search for new electroweak scale

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System in the CERN SPS(Journal Article) |

  12. Sleuth at CDF: A Quasi-model-independent search for new electroweak scale

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System in the CERN SPS(Journal Article) |physics (Conference) |

  13. Vista at CDF: Results of a model-independent search for new physics in 927

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory of rare Kaonfor Direct Measurement(JournalFramework (Conference) |

  14. Vista at CDF: Results of a model-independent search for new physics in 927

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory of rare Kaonfor Direct Measurement(JournalFramework (Conference) |pb**-1 at

  15. DOI: 10.1002/cssc.201402244 Chemocatalytic Upgrading of Tailored Fermentation

    E-Print Network [OSTI]

    Toste, Dean

    .g., gasification of biomass to produce syngas, aqueous phase reforming of sugars, and hydrolysis of biomass on the ABE alkylation reaction. Treat- ment of ABE mixture (2.3:3.7:1) in toluene with catalytic Ru

  16. Three Essays on Strategic Considerations for Product Development

    E-Print Network [OSTI]

    Sawhill, James Winslow

    2010-01-01

    New Car Buyers CDF Observed All Drivers CDF Adjusted for New Car Buyers Source: Regional Transportation Energy

  17. The Development of an Academically-Based Entertainment-Education (ABEE) Model: Co-opting Behavioral Change Efficacy of Entertainment-Education for Academic Learning Targeting the Societal Landscape of U.S. Geographic Illiteracy 

    E-Print Network [OSTI]

    Simms, Michelle

    2011-07-22

    and detrimental behaviors by presenting positive role models in entertainment products designed to stimulate changes in viewers' behavior. For example, soap operas promote condoms use as a HIV prevention strategy (Tanzania), model culturally-sensitive actions...

  18. Elastic properties of perovskite ATiO{sub 3} (A?=?Be, Mg, Ca, Sr, and Ba) and PbBO{sub 3} (B?=?Ti, Zr, and Hf): First principles calculations

    SciTech Connect (OSTI)

    Pandech, Narasak; Limpijumnong, Sukit; Sarasamak, Kanoknan

    2015-05-07

    The mechanical properties of perovskite oxides depend on two metal oxide lattices that are intercalated. This provides an opportunity for separate tuning of hardness, Poisson's ratio (transverse expansion in response to the compression), and shear strength. The elastic constants of series of perovskite oxides were studied by first principles approach. Both A-site and B-site cations were systematically varied in order to see their effects on the elastic parameters. To study the effects of A-site cations, we studied the elastic properties of perovskite ATiO{sub 3} for A being Be, Mg, Ca, Sr, or Ba, one at a time. Similarly, for B-site cations, we studied the elastic properties of PbBO{sub 3} for B being Ti, Zr, or Hf, one at a time. The density functional first principles calculations with local density approximation (LDA) and generalized gradient approximation (GGA) were employed. It is found that the maximum C{sub 11} elastic constant is achieved when the atomic size of the cations at A-site and B-site are comparable. We also found that C{sub 12} elastic constant is sensitive to B-site cations while C{sub 44} elastic constant is more sensitive to A-site cations. Details and explanations for such dependencies are discussed.

  19. Search for the Standard Model Higgs Boson Produced in Association with Top Quarks Using the Full CDF Data Set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    A search is presented for the standard model Higgs boson produced in association with top quarks using the full Run II proton-antiproton collision data set, corresponding to 9.45??fb[superscript -1], collected by the ...

  20. Measurement of the top-quark mass in the all-hadronic channel using the full CDF data set

    E-Print Network [OSTI]

    Aaltonen, T.

    The top-quark mass M[subscript top] is measured using top quark-antiquark pairs produced in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV and that decay into a fully hadronic final state. The full ...

  1. Search for new physics in high pT like-sign dilepton events at CDF II

    SciTech Connect (OSTI)

    Aaltonen, T.

    2011-10-25

    We present a search for new physics in events with two high pT leptons of the same electric charge, using data with an integrated luminosity of 6.1 fb-1. The observed data are consistent with standard model predictions. We set 95% C.L. lower limits on the mass of doubly-charged scalars decaying to like-sign dileptons, mH±± > 190 - 245 GeV/c2, depending on the decay mode and coupling.

  2. Search for Top-Quark Production via Flavor-Changing Neutral Currents in W+1 Jet Events at CDF

    E-Print Network [OSTI]

    Xie, Si

    We report on a search for the non-standard-model process u(c)+g?t using pp? collision data collected by the Collider Detector at Fermilab II detector corresponding to 2.2??fb[superscript -1]. The candidate events are ...

  3. Measurement of the WW plus WZ Production Cross Section Using the lepton plus jets Final State at CDF II

    E-Print Network [OSTI]

    Paus, Christoph M. E.

    We report two complementary measurements of the WW+WZ cross section in the final state consisting of an electron or muon, missing transverse energy, and jets, performed using pp[over-bar] collision data at [sqrt]s=1.96??TeV ...

  4. Measurement of the WW+WZ Production Cross Section Using the Lepton+Jets Final State at CDF II

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Apresyan, A.; Arisawa, T.; /Waseda U. /Dubna, JINR

    2009-11-01

    We report two complementary measurements of the diboson (WW + WZ) cross section in the final state consisting of an electron or muon, missing transverse energy, and jets, performed using p{bar p} collision data at {radical}s = 1.96 TeV collected by the Collider Detector at Fermilab. The first method uses the dijet invariant mass distribution while the second method uses more of the kinematic information in the event through matrix-element calculations of the signal and background processes and has a higher sensitivity. The result from the second method has a signal significance of 5.4{sigma} and is the first observation of WW + WZ production using this signature. Combining the results from both methods gives {sigma}{sub WW+WZ} = 16.0 {+-} 3.3 pb, in agreement with the standard model prediction.

  5. Search for the Decays B(s)-->e+mu- and B(s)-->e+e- in CDF Run II

    E-Print Network [OSTI]

    Xie, Si

    We report results from a search for the lepton flavor violating decays B[subscript s][superscript 0]?e[superscript +]?[superscript -] and B[superscript 0]?e[superscript +]?[superscript -], and the flavor-changing neutral-current ...

  6. Search for standard model Higgs boson production in association with a W boson using a neural network discriminant at CDF

    E-Print Network [OSTI]

    Xie, Si

    We present a search for standard model Higgs boson production in association with a W boson in proton-antiproton collisions (pp??W[superscript ±]H???bb?) at a center of mass energy of 1.96 TeV. The search employs data ...

  7. Search for the Higgs boson in the all-hadronic final state using the full CDF data set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    This paper reports the result of a search for the standard model Higgs boson in events containing four reconstructed jets associated with quarks. For masses below 135 GeV/c [superscript 2], the Higgs boson decays to ...

  8. Search for the standard model Higgs boson produced in association with top quarks using the full CDF data set

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2012-08-01

    A search is presented for the standard model Higgs boson produced in association with top quarks using the full Run II proton-antiproton collision data set, corresponding to 9.45 fb{sup -1}, collected by the Collider Detector at Fermilab. No significant excess over the expected background is observed, and 95% credibility-level upper bounds are placed on the cross section {sigma}(t{bar t}H {yields} lepton + missing transverse energy + jets). For a Higgs boson mass of 125 GeV/c{sup 2}, we expect to set a limit of 12.6, and observe a limit of 20.5 times the standard model rate. This represents the most sensitive search for a standard model Higgs boson in this channel to date.

  9. Search for the Higgs boson in the all-hadronic final state using the CDF II detector

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We report on a search for the production of the Higgs boson decaying to two bottom quarks accompanied by two additional quarks. The data sample used corresponds to an integrated luminosity of approximately 4??fb[superscript ...

  10. Search for new physics in high pT like-sign dilepton events at CDF II

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.

    2011-10-25

    We present a search for new physics in events with two high pT leptons of the same electric charge, using data with an integrated luminosity of 6.1 fb-1. The observed data are consistent with standard model predictions. We set 95% C.L. lower limits on the mass of doubly-charged scalars decaying to like-sign dileptons, mH±± > 190 - 245 GeV/c2, depending on the decay mode and coupling.

  11. Measurement of the Top-Quark Mass in the All-Hadronic Channel using the full CDF data set

    E-Print Network [OSTI]

    CDF Collaboration; T. Aaltonen; S. Amerio; D. Amidei; A. Anastassov; A. Annovi; J. Antos; G. Apollinari; J. A. Appel; T. Arisawa; A. Artikov; J. Asaadi; W. Ashmanskas; B. Auerbach; A. Aurisano; F. Azfar; W. Badgett; T. Bae; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; P. Barria; P. Bartos; M. Bauce; F. Bedeschi; S. Behari; G. Bellettini; J. Bellinger; D. Benjamin; A. Beretvas; A. Bhatti; K. R. Bland; B. Blumenfeld; A. Bocci; A. Bodek; D. Bortoletto; J. Boudreau; A. Boveia; L. Brigliadori; C. Bromberg; E. Brucken; J. Budagov; H. S. Budd; K. Burkett; G. Busetto; P. Bussey; P. Butti; A. Buzatu; A. Calamba; S. Camarda; M. Campanelli; F. Canelli; B. Carls; D. Carlsmith; R. Carosi; S. Carrillo; B. Casal; M. Casarsa; A. Castro; P. Catastini; D. Cauz; V. Cavaliere; M. Cavalli-Sforza; A. Cerri; L. Cerrito; Y. C. Chen; M. Chertok; G. Chiarelli; G. Chlachidze; K. Cho; D. Chokheli; A. Clark; C. Clarke; M. E. Convery; J. Conway; M. Corbo; M. Cordelli; C. A. Cox; D. J. Cox; M. Cremonesi; D. Cruz; J. Cuevas; R. Culbertson; N. d'Ascenzo; M. Datta; P. de Barbaro; L. Demortier; L. Marchese; M. Deninno; F. Devoto; M. D'Errico; A. Di Canto; B. Di Ruzza; J. R. Dittmann; M. D'Onofrio; S. Donati; M. Dorigo; A. Driutti; K. Ebina; R. Edgar; A. Elagin; R. Erbacher; S. Errede; B. Esham; S. Farrington; J. P. Fernández Ramos; R. Field; G. Flanagan; R. Forrest; M. Franklin; J. C. Freeman; H. Frisch; Y. Funakoshi; C. Galloni; A. F. Garfinkel; P. Garosi; H. Gerberich; E. Gerchtein; S. Giagu; V. Giakoumopoulou; K. Gibson; C. M. Ginsburg; N. Giokaris; P. Giromini; G. Giurgiu; V. Glagolev; D. Glenzinski; M. Gold; D. Goldin; A. Golossanov; G. Gomez; G. Gomez-Ceballos; M. Goncharov; O. González López; I. Gorelov; A. T. Goshaw; K. Goulianos; E. Gramellini; S. Grinstein; C. Grosso-Pilcher; R. C. Group; J. Guimaraes da Costa; S. R. Hahn; J. Y. Han; F. Happacher; K. Hara; M. Hare; R. F. Harr; T. Harrington-Taber; K. Hatakeyama; C. Hays; J. Heinrich; M. Herndon; A. Hocker; Z. Hong; W. Hopkins; S. Hou; R. E. Hughes; U. Husemann; M. Hussein; J. Huston; G. Introzzi; M. Iori; A. Ivanov; E. James; D. Jang; B. Jayatilaka; E. J. Jeon; S. Jindariani; M. Jones; K. K. Joo; S. Y. Jun; T. R. Junk; M. Kambeitz; T. Kamon; P. E. Karchin; A. Kasmi; Y. Kato; W. Ketchum; J. Keung; B. Kilminster; D. H. Kim; H. S. Kim; J. E. Kim; M. J. Kim; S. B. Kim; S. H. Kim; Y. K. Kim; Y. J. Kim; N. Kimura; M. Kirby; K. Knoepfel; K. Kondo; D. J. Kong; J. Konigsberg; A. V. Kotwal; M. Kreps; J. Kroll; M. Kruse; T. Kuhr; M. Kurata; A. T. Laasanen; S. Lammel; M. Lancaster; K. Lannon; G. Latino; H. S. Lee; J. S. Lee; S. Leo; S. Leone; J. D. Lewis; A. Limosani; E. Lipeles; A. Lister; H. Liu; Q. Liu; T. Liu; S. Lockwitz; A. Loginov; A. Lucà; D. Lucchesi; J. Lueck; P. Lujan; P. Lukens; G. Lungu; J. Lys; R. Lysak; R. Madrak; P. Maestro; S. Malik; G. Manca; A. Manousakis-Katsikakis; F. Margaroli; P. Marino; M. Martínez; K. Matera; M. E. Mattson; A. Mazzacane; P. Mazzanti; R. McNulty; A. Mehta; P. Mehtala; C. Mesropian; T. Miao; D. Mietlicki; A. Mitra; H. Miyake; S. Moed; N. Moggi; C. S. Moon; R. Moore; M. J. Morello; A. Mukherjee; Th. Muller; P. Murat; M. Mussini; J. Nachtman; Y. Nagai; J. Naganoma; I. Nakano; A. Napier; J. Nett; C. Neu; T. Nigmanov; L. Nodulman; S. Y. Noh; O. Norniella; L. Oakes; S. H. Oh; Y. D. Oh; I. Oksuzian; T. Okusawa; R. Orava; L. Ortolan; C. Pagliarone; E. Palencia; P. Palni; V. Papadimitriou; W. Parker; G. Pauletta; M. Paulini; C. Paus; T. J. Phillips; G. Piacentino; E. Pianori; J. Pilot; K. Pitts; C. Plager; L. Pondrom; S. Poprocki; K. Potamianos; F. Prokoshin; A. Pranko; F. Ptohos; G. Punzi; N. Ranjan; I. Redondo Fernández; P. Renton; M. Rescigno; F. Rimondi; L. Ristori; A. Robson; T. Rodriguez; S. Rolli; M. Ronzani; R. Roser; J. L. Rosner; F. Ruffini; A. Ruiz; J. Russ; V. Rusu; W. K. Sakumoto; Y. Sakurai; L. Santi; K. Sato; V. Saveliev; A. Savoy-Navarro; P. Schlabach; E. E. Schmidt; T. Schwarz; L. Scodellaro; F. Scuri; S. Seidel; Y. Seiya; A. Semenov; F. Sforza; S. Z. Shalhout; T. Shears; P. F. Shepard; M. Shimojima; M. Shochet; I. Shreyber-Tecker; A. Simonenko; K. Sliwa; J. R. Smith; F. D. Snider; V. Sorin; H. Song; M. Stancari; R. St. Denis; D. Stentz; J. Strologas; Y. Sudo; A. Sukhanov; I. Suslov; K. Takemasa; Y. Takeuchi; J. Tang; M. Tecchio; P. K. Teng; J. Thom; E. Thomson; V. Thukral; D. Toback; S. Tokar; K. Tollefson; T. Tomura; D. Tonelli; S. Torre; D. Torretta; P. Totaro; M. Trovato; F. Ukegawa; S. Uozumi; F. Vázquez; G. Velev; C. Vellidis; C. Vernieri; M. Vidal; R. Vilar; J. Vizán; M. Vogel; G. Volpi; P. Wagner; R. Wallny; S. M. Wang; D. Waters; W. C. Wester III; D. Whiteson; A. B. Wicklund; S. Wilbur; H. H. Williams; J. S. Wilson; P. Wilson; B. L. Winer; P. Wittich; S. Wolbers; H. Wolfe; T. Wright; X. Wu; Z. Wu; K. Yamamoto; D. Yamato; T. Yang; U. K. Yang; Y. C. Yang; W. -M. Yao; G. P. Yeh; K. Yi; J. Yoh; K. Yorita; T. Yoshida; G. B. Yu

    2014-10-08

    The top-quark mass M_top is measured using top quark-antiquark pairs produced in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV and decaying into a fully hadronic final state. The full data set collected with the CDFII detector at the Fermilab Tevatron Collider, corresponding to an integrated luminosity of 9.3 fb-1, is used. Events are selected that have six to eight jets, at least one of which is identified as having originated from a b quark. In addition, a multivariate algorithm, containing multiple kinematic variables as inputs, is used to discriminate signal events from background events due to QCD multijet production. Templates for the reconstructed top-quark mass are combined in a likelihood fit to measure M_top with a simultaneous calibration of the jet-energy scale. A value of M_top = 175.07+- 1.19(stat)+1.55-1.58(syst) GeV/c^2 is obtained for the top-quark mass.

  12. CDF note 8811 Measurement of the relative fraction of t t events produced via gluon-gluon fusion in

    E-Print Network [OSTI]

    Quigg, Chris

    will help us better understand the composition of the proton and may suggest new top production mechanisms to retain their kinematic characteristics in the #12;nal state. This, along with information from kinematics SELECTION This analysis is based on an integrated luminosity of 955 pb 1 collected with the CDFII detector

  13. Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We measure the time dependence of the ratio of decay rates for D[superscript 0] ? K[superscript +]?[superscript ?] to the Cabibbo-favored decay D[superscript 0] ? K[superscript ?]?[superscript +]. The charge conjugate ...

  14. Measurement of the Cross Section for Prompt Isolated Diphoton Production Using the Full CDF Run II Data Sample

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    This Letter reports a measurement of the cross section for producing pairs of central prompt isolated photons in proton-antiproton collisions at a total energy ?s=1.96??TeV using data corresponding to 9.5??fb[superscript ...

  15. Search for New Physics in High p [subscript T] Like-Sign Dilepton Events at CDF II

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a search for new physics in events with two high p[subscript T] leptons of the same electric charge, using data with an integrated luminosity of 6.1??fb-[superscript 1]. The observed data are consistent with ...

  16. Measurement of the Inclusive Leptonic Asymmetry in Top-Quark Pairs that Decay to Two Charged Leptons at CDF

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We measure the inclusive forward–backward asymmetry of the charged-lepton pseudorapidities from top-quark pairs produced in proton–antiproton collisions and decaying to final states that contain two charged leptons (electrons ...

  17. CDF Grid computing and the decay X(3872) ---> J/psi pi+ pi- with J/psi ---> e+ e-

    SciTech Connect (OSTI)

    Kerzel, Ulrich; /Karlsruhe U., EKP

    2005-11-01

    The main aim of physics research is to obtain a consistent description of nature leading to a detailed understanding of the phenomena observed in experiments. The field of particle physics focuses on the discovery and understanding of the fundamental particles and the forces by which they interact with each other. Using methods from group theory, the present knowledge can be mathematically described by the so-called ''Standard Model'', which interprets the fundamental particles (quarks and leptons) as quantum-mechanical fields interacting via the electromagnetic, weak and strong force. These interactions are mediated via gauge particles such as the photon (for the electromagnetic force), W{sup {+-}} and Z{sup 0} (for the weak force) and gluons (for the strong force). Gravitation is not yet included in this description as it presently cannot be formulated in a way to be incorporated in the Standard Model. However, the gravitational force is negligibly small on microscopic levels. The validity of this mathematical approach is tested experimentally by accelerating particles such as electrons and protons, as well as their antiparticles, to high energies and observing the reactions as these particles collide using sophisticated detectors. Due to the high energy of the particles involved, these detectors need to be as big as a small house to allow for precision measurements. Comparing the predictions from theory with the analyzed reactions observed in these collisions, the Standard Model has been established as a well-founded theory. Precision measurements from the four experiments (Aleph, Delphi, Opal, L3) the Large Electron Positron collider (LEP), operated at CERN during the years 1989-2000, allow the determination of the Standard Model parameters with enormous accuracy.

  18. Assessing probe-specific dye and slide biases in two-color microarray data.

    E-Print Network [OSTI]

    2008-01-01

    Empirical CDF Plot of Low Dose Radiation study with linearEmpirical CDF Plot of Low Dose Radiation study with modi-Empirical CDF Plot of Low Dose Radiation study with modi-

  19. DOE Announces Small Business Awards at its Annual Small Business...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    California Small Business Innovative Research-Small Business of the Year Recipient: Deep Web Technologies, Inc. President and CTO: Abe Lederman Santa Fe, New Mexico Small...

  20. An analysis of the SUDOC bibliographic knowledge base from a link validity viewpoint

    E-Print Network [OSTI]

    Croitoru, Madalina

    libraries (SUDOC), a bibli- ographical knowledge base maintained by the University Bibliographic Agency- tation) is a large bibliographical knowledge base managed by ABES (Agence Bibli- ographique de l

  1. Keeping ISRS Within Reason

    Broader source: Energy.gov [DOE]

    Keeping ISRS Within Reason Abe Lynn and Loring Wylie Degenkolb Engineers 2014 Natural Phenomena Hazards Meeting October 21-22, 2014

  2. Results from MathSciNet: Mathematical Reviews on the Web c ...

    E-Print Network [OSTI]

    2004-05-14

    Results from MathSciNet: Mathematical Reviews on the Web c Copyright American Mathematical Society 2004. 96b:35030 35H05. Capogna, L. (1-PURD);

  3. On the Security of the Core of PRINCE Against Biclique and Differential Cryptanalysis

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    On the Security of the Core of PRINCE Against Biclique and Differential Cryptanalysis Farzaneh Abed.abed,eik.list,stefan.lucks}@uni-weimar.de Abstract. PRINCE is a modern involutive lightweight cipher which was proposed by Rechberger et al. in 2012. PRINCE uses 64-bit core cipher, PRINCEcore, which holds the major encryption logic and is wrapped by two

  4. Version 21.0 CDF/PUB/TOP/PUBLIC/3110 June 12, 1995 Study of tt Production in pp Collisions Using Total Transverse Energy

    E-Print Network [OSTI]

    Quigg, Chris

    ­Wagner, 7 K. L. Byrum, 1 J. Cammerata, 13 C. Campagnari, 7 M. Campbell, 17 A. Caner, 7 W. Carithers, 15 D

  5. Measurement of the Single Top Quark Production Cross Section and |V[subscript tb]| in Events with One Charged Lepton, Large Missing Transverse Energy, and Jets at CDF

    E-Print Network [OSTI]

    Aaltonen, T.

    We report a measurement of single top quark production in proton-antiproton collisions at a center-of-mass energy of ?s = 1.96??TeV using a data set corresponding to 7.5??fb[superscript -1] of integrated luminosity collected ...

  6. Search for B[subscript s][superscript 0]??[superscript +]?[superscript -] and B[superscript 0]??[superscript +]?[superscript -] Decays with CDF II

    E-Print Network [OSTI]

    Bauer, Gerry P.

    A search has been performed for B[subscript s][superscript 0]??[superscript +]?[superscript -] and B[superscript 0]??[superscript +]?[superscript -] decays using 7??fb[superscript -1] of integrated luminosity collected by ...

  7. Measurement of indirect CP-violating asymmetries in D[superscript 0] ? K[superscript +]K[superscript ?] and D[superscript 0] ? ?[superscript +]?[superscript ?] decays at CDF

    E-Print Network [OSTI]

    Aaltonen, T.

    We report a measurement of the indirect CP-violating asymmetries (A[subscript ?]) between effective lifetimes of anticharm and charm mesons reconstructed in D[superscript 0] ? K[superscript +]K[superscript -] and D[superscript ...

  8. Measurement of central exclusive ?[superscript +]?[superscript -] production in p[bar over p] collisions at ?s = 0.9 and 1.96 TeV at CDF

    E-Print Network [OSTI]

    Aaltonen, T.

    We measure exclusive ?[superscript +]?[superscript -] production in proton-antiproton collisions at center-of-mass energies ?s = 0.9 and 1.96 TeV in the Collider Detector at Fermilab. We select events with two oppositely ...

  9. Constraints on Models of the Higgs Boson with Exotic Spin and Parity using Decays to Bottom-Antibottom Quarks in the Full CDF Data Set

    E-Print Network [OSTI]

    Aaltonen, T.

    A search for particles with the same mass and couplings as those of the standard model Higgs boson but different spin and parity quantum numbers is presented. We test two specific alternative Higgs boson hypotheses: a ...

  10. Search for the Higgs boson produced in association with Z-->l^{+}l^{-} using the matrix element method at CDF II

    E-Print Network [OSTI]

    Xie, Si

    We present a search for associated production of the standard model Higgs boson and a Z boson where the Z boson decays to two leptons and the Higgs decays to a pair of b quarks in pp? collisions at the Fermilab Tevatron. ...

  11. Measurement of central exclusive ?? ?? production in p p ¯ collisions at ?s = 0.9 and 1.96 TeV at CDF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aaltonen, T.; Albrow, M.? G.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. ?A.; Arisawa, T.; et al

    2015-05-29

    We measure exclusive ?? ?? production in proton-antiproton collisions at center-of-mass energies ?s = 0.9 and 1.96 TeV in the Collider Detector at Fermilab. We select events with two oppositely charged particles, assumed to be pions, with pseudorapidity |?| more »pomeron in a region of transition between nonperturbative and perturbative quantum chromodynamics. The data extend up to dipion mass M(?? ??) = 5000 MeV / c² and show resonance structures attributed to f? and f? (1270) mesons. From the ?? ?? and K?K? spectra, we place upper limits on exclusive ?c0(3415) production.« less

  12. Radio observations of the CDF-South: a possible link between radio emission and star formation in X-ray selected AGN

    E-Print Network [OSTI]

    E. Rovilos; A. Georgakakis; I. Georgantopoulos; J. Afonso; A. M. Koekemoer; B. Mobasher; C. Goudis

    2007-03-13

    We explore the nature of the radio emission of X-ray selected AGN by combining deep radio (1.4GHz; 60micro-Jy) and X-ray data with multiwavelength (optical, mid-infrared) observations in the Extended Chandra Deep Field South (E-CDFS). The fraction of radio detected X-ray sources increases from 9% in the E-CDFS to 14% in the central region of this field, which has deeper X-ray coverage from the 1Ms CDFS. We find evidence that the radio emission of up to 60% of the hard X-ray/radio matched AGN is likely associated with star-formation in the host galaxy. Firstly, the mid-IR (24micron) properties of these sources are consistent with the infrared/radio correlation of starbursts. Secondly, most of them are found in galaxies with blue rest-frame optical colours (U-V), suggesting a young stellar population. On the contrary, X-ray/radio matched AGN which are not detected in the mid-infrared have red U-V colours suggesting their radio emission is associated with AGN activity. We also find no evidence for a population of heavily obscured radio-selected AGN that are not detected in X-rays. Finally, we do no confirm previous claims for a correlation between radio emission and X-ray obscuration. Assuming that the radio continuum measures star-formation, this finding is against models where the dust and gas clouds associated with circumnuclear starbursts are spherically blocking our view to the central engine.

  13. Measurement of indirect CP-violating asymmetries in $D^0\\to K^+K^-$ and $D^0\\to ?^+?^-$ decays at CDF

    E-Print Network [OSTI]

    CDF Collaboration; T. Aaltonen; S. Amerio; D. Amidei; A. Anastassov; A. Annovi; J. Antos; G. Apollinari; J. A. Appel; T. Arisawa; A. Artikov; J. Asaadi; W. Ashmanskas; B. Auerbach; A. Aurisano; F. Azfar; W. Badgett; T. Bae; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; P. Barria; P. Bartos; M. Bauce; F. Bedeschi; S. Behari; G. Bellettini; J. Bellinger; D. Benjamin; A. Beretvas; A. Bhatti; K. R. Bland; B. Blumenfeld; A. Bocci; A. Bodek; D. Bortoletto; J. Boudreau; A. Boveia; L. Brigliadori; C. Bromberg; E. Brucken; J. Budagov; H. S. Budd; K. Burkett; G. Busetto; P. Bussey; P. Butti; A. Buzatu; A. Calamba; S. Camarda; M. Campanelli; F. Canelli; B. Carls; D. Carlsmith; R. Carosi; S. Carrillo; B. Casal; M. Casarsa; A. Castro; P. Catastini; D. Cauz; V. Cavaliere; A. Cerri; L. Cerrito; Y. C. Chen; M. Chertok; G. Chiarelli; G. Chlachidze; K. Cho; D. Chokheli; A. Clark; C. Clarke; M. E. Convery; J. Conway; M. Corbo; M. Cordelli; C. A. Cox; D. J. Cox; M. Cremonesi; D. Cruz; J. Cuevas; R. Culbertson; N. d'Ascenzo; M. Datta; P. de Barbaro; L. Demortier; L. Marchese; M. Deninno; F. Devoto; M. D'Errico; A. Di Canto; B. Di Ruzza; J. R. Dittmann; M. D'Onofrio; S. Donati; M. Dorigo; A. Driutti; K. Ebina; R. Edgar; A. Elagin; R. Erbacher; S. Errede; B. Esham; S. Farrington; J. P. Fernández Ramos; R. Field; G. Flanagan; R. Forrest; M. Franklin; J. C. Freeman; H. Frisch; Y. Funakoshi; C. Galloni; A. F. Garfinkel; P. Garosi; H. Gerberich; E. Gerchtein; S. Giagu; V. Giakoumopoulou; K. Gibson; C. M. Ginsburg; N. Giokaris; P. Giromini; V. Glagolev; D. Glenzinski; M. Gold; D. Goldin; A. Golossanov; G. Gomez; G. Gomez-Ceballos; M. Goncharov; O. González López; I. Gorelov; A. T. Goshaw; K. Goulianos; E. Gramellini; C. Grosso-Pilcher; R. C. Group; J. Guimaraes da Costa; S. R. Hahn; J. Y. Han; F. Happacher; K. Hara; M. Hare; R. F. Harr; T. Harrington-Taber; K. Hatakeyama; C. Hays; J. Heinrich; M. Herndon; A. Hocker; Z. Hong; W. Hopkins; S. Hou; R. E. Hughes; U. Husemann; M. Hussein; J. Huston; G. Introzzi; M. Iori; A. Ivanov; E. James; D. Jang; B. Jayatilaka; E. J. Jeon; S. Jindariani; M. Jones; K. K. Joo; S. Y. Jun; T. R. Junk; M. Kambeitz; T. Kamon; P. E. Karchin; A. Kasmi; Y. Kato; W. Ketchum; J. Keung; B. Kilminster; D. H. Kim; H. S. Kim; J. E. Kim; M. J. Kim; S. B. Kim; S. H. Kim; Y. K. Kim; Y. J. Kim; N. Kimura; M. Kirby; K. Knoepfel; K. Kondo; D. J. Kong; J. Konigsberg; A. V. Kotwal; M. Kreps; J. Kroll; M. Kruse; T. Kuhr; M. Kurata; A. T. Laasanen; S. Lammel; M. Lancaster; K. Lannon; G. Latino; H. S. Lee; J. S. Lee; S. Leo; S. Leone; J. D. Lewis; A. Limosani; E. Lipeles; A. Lister; H. Liu; Q. Liu; T. Liu; S. Lockwitz; A. Loginov; A. Lucà; D. Lucchesi; J. Lueck; P. Lujan; P. Lukens; G. Lungu; J. Lys; R. Lysak; R. Madrak; P. Maestro; S. Malik; G. Manca; A. Manousakis-Katsikakis; F. Margaroli; P. Marino; K. Matera; M. E. Mattson; A. Mazzacane; P. Mazzanti; R. McNulty; A. Mehta; P. Mehtala; C. Mesropian; T. Miao; D. Mietlicki; A. Mitra; H. Miyake; S. Moed; N. Moggi; C. S. Moon; R. Moore; M. J. Morello; A. Mukherjee; Th. Muller; P. Murat; M. Mussini; J. Nachtman; Y. Nagai; J. Naganoma; I. Nakano; A. Napier; J. Nett; C. Neu; T. Nigmanov; L. Nodulman; S. Y. Noh; O. Norniella; L. Oakes; S. H. Oh; Y. D. Oh; I. Oksuzian; T. Okusawa; R. Orava; L. Ortolan; C. Pagliarone; E. Palencia; P. Palni; V. Papadimitriou; W. Parker; G. Pauletta; M. Paulini; C. Paus; T. J. Phillips; E. Pianori; J. Pilot; K. Pitts; C. Plager; L. Pondrom; S. Poprocki; K. Potamianos; F. Prokoshin; A. Pranko; F. Ptohos; G. Punzi; I. Redondo Fernández; P. Renton; M. Rescigno; F. Rimondi; L. Ristori; A. Robson; T. Rodriguez; S. Rolli; M. Ronzani; R. Roser; J. L. Rosner; F. Ruffini; A. Ruiz; J. Russ; V. Rusu; W. K. Sakumoto; Y. Sakurai; L. Santi; K. Sato; V. Saveliev; A. Savoy-Navarro; P. Schlabach; E. E. Schmidt; T. Schwarz; L. Scodellaro; F. Scuri; S. Seidel; Y. Seiya; A. Semenov; F. Sforza; S. Z. Shalhout; T. Shears; P. F. Shepard; M. Shimojima; M. Shochet; I. Shreyber-Tecker; A. Simonenko; K. Sliwa; J. R. Smith; F. D. Snider; V. Sorin; H. Song; M. Stancari; R. St. Denis; D. Stentz; J. Strologas; Y. Sudo; A. Sukhanov; I. Suslov; K. Takemasa; Y. Takeuchi; J. Tang; M. Tecchio; P. K. Teng; J. Thom; E. Thomson; V. Thukral; D. Toback; S. Tokar; K. Tollefson; T. Tomura; D. Tonelli; S. Torre; D. Torretta; P. Totaro; M. Trovato; F. Ukegawa; S. Uozumi; F. Vázquez; G. Velev; C. Vellidis; C. Vernieri; M. Vidal; R. Vilar; J. Vizán; M. Vogel; G. Volpi; P. Wagner; R. Wallny; S. M. Wang; D. Waters; W. C. Wester III; D. Whiteson; A. B. Wicklund; S. Wilbur; H. H. Williams; J. S. Wilson; P. Wilson; B. L. Winer; P. Wittich; S. Wolbers; H. Wolfe; T. Wright; X. Wu; Z. Wu; K. Yamamoto; D. Yamato; T. Yang; U. K. Yang; Y. C. Yang; W. -M. Yao; G. P. Yeh; K. Yi; J. Yoh; K. Yorita; T. Yoshida; G. B. Yu; I. Yu; A. M. Zanetti; Y. Zeng; C. Zhou; S. Zucchelli

    2015-01-06

    We report a measurement of the indirect CP-violating asymmetries ($A_{\\Gamma}$) between effective lifetimes of anticharm and charm mesons reconstructed in $D^0\\to K^+ K^-$ and $D^0\\to \\pi^+\\pi^-$ decays. We use the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab experiment and corresponding to $9.7$~fb$^{-1}$ of integrated luminosity. The strong-interaction decay $D^{*+}\\to D^0\\pi^+$ is used to identify the meson at production as $D^0$ or $\\overline{D}^0$. We statistically subtract $D^0$ and $\\overline{D}^0$ mesons originating from $b$-hadron decays and measure the yield asymmetry between anticharm and charm decays as a function of decay time. We measure $A_\\Gamma (K^+K^-) = (-0.19 \\pm 0.15 (stat) \\pm 0.04 (syst))\\%$ and $A_\\Gamma (\\pi^+\\pi^-)= (-0.01 \\pm 0.18 (stat) \\pm 0.03 (syst))\\%$. The results are consistent with the hypothesis of CP symmetry and their combination yields $A_\\Gamma = (-0.12 \\pm 0.12)\\%$.

  14. Measurement of the top quark mass using the template method in the lepton plus jets channel with in situ W ---> j j calibration at CDF-II

    SciTech Connect (OSTI)

    Adelman, Jahred A.; Arguin, J.F.; Bellettini, G.; Brubaker, E.; Budagov, J.; Chlachidze, G.; Demortier, L.; Gibson, A.; Kim, S.; Kim, Y.K.; Maruyama, T.; Sato, K.; Shochet, M.; Sinervo, P.; Tomura, T.; Velev, G.; Xie, S.; Yang, U.K.; /Chicago U. /Toronto U. /INFN, Pisa /Dubna, JINR /Rockefeller U. /LBL, Berkeley /Tsukuba U. /Fermilab

    2006-05-01

    We report an updated measurement of the top quark mass in the lepton plus jets channel of t{bar t} events from p{bar p} collisions at {radical}s = 1.96 TeV. This measurement uses a dataset with integrated luminosity of 680 pb{sup -1}, containing 360 t{bar t} candidates separated into four subsamples. A top quark mass is reconstructed for each event by using energy and momentum constraints on the top quark pair decay products. We also employ the reconstructed mass of hadronic W boson decays W {yields} jj to constrain in situ the largest systematic uncertainty of the top quark mass measurement: the jet energy scale. Monte Carlo templates of the reconstructed top quark and W boson mass are produced as a function of the true top quark mass and the jet energy scale. The distribution of reconstructed top quark and W boson mass in the data are compared to the Monte Carlo templates using a likelihood fit to obtain: M{sub top} = 173.4 {+-} 2.8 GeV/c{sup 2}.

  15. The XMM deep survey in the CDF-S. IX. An X-ray outflow in a luminous obscured quasar at z~1.6

    E-Print Network [OSTI]

    Vignali, C; Comastri, A; Gilli, R; Lanzuisi, G; Ranalli, P; Cappelluti, N; Mainieri, V; Georgantopoulos, I; Carrera, F J; Fritz, J; Brusa, M; Brandt, W N; Bauer, F E; Fiore, F; Tombesi, F

    2015-01-01

    In active galactic nuclei (AGN)-galaxy co-evolution models, AGN winds and outflows are often invoked to explain why super-massive black holes and galaxies stop growing efficiently at a certain phase of their lives. They are commonly referred to as the leading actors of feedback processes. Evidence of ultra-fast (v>0.05c) outflows in the innermost regions of AGN has been collected in the past decade by sensitive X-ray observations for sizable samples of AGN, mostly at low redshift. Here we present ultra-deep XMM-Newton and Chandra spectral data of an obscured (Nh~2x10^{23} cm^-2), intrinsically luminous (L2-10keV~4x10^{44} erg/s) quasar (named PID352) at z~1.6 (derived from the X-ray spectral analysis) in the Chandra Deep Field-South. The source is characterized by an iron emission and absorption line complex at observed energies of E~2-3 keV. While the emission line is interpreted as being due to neutral iron (consistent with the presence of cold absorption), the absorption feature is due to highly ionized ir...

  16. Measurement of R = B(t?Wb)/B(t?Wq) in top-quark-pair decays using lepton+jets events and the full CDF run II dataset

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present a measurement of the ratio of the top-quark branching fractions R=B(t?Wb)/ B(t?Wq), where q represents quarks of type b, s, or d, in the final state with a lepton and hadronic jets. The measurement uses ?s=1.96??TeV ...

  17. Study of top quark production and decays involving a tau lepton at CDF and limits on a charged Higgs boson contribution

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We present an analysis of top-antitop quark production and decay into a tau lepton, tau neutrino, and bottom quark using data from 9??fb[superscript ?1] of integrated luminosity at the Collider Detector at Fermilab. Dilepton ...

  18. Measurement of CP--violating asymmetries in $D^0\\to\\pi^+\\pi^-$ and $D^0\\to K^+K^-$ decays at CDF

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2011-11-01

    We report on a measurement of CP-violating asymmetries (A{sub CP}) in the Cabibbo-suppressed D{sup 0} {yields} {pi}{sup +}{pi}{sup -} and D{sup 0} {yields} K{sup +}K{sup -} decays reconstructed in a data sample corresponding to 5.9 fb{sup -1} of integrated luminosity collected by the upgraded Collider Detector at Fermilab. We use the strong decay D*{sup +} {yields} D{sup 0}{pi}{sup +} to identify the flavor of the charmed meson at production and exploit CP-conserving strong c{bar c} pair-production in p{bar p} collisions. High-statistics samples of Cabibbo-favored D{sup 0} {yields} K{sup -}{pi}{sup +} decays with and without a D*{sup {+-}} tag are used to correct for instrumental effects and significantly reduce systematic uncertainties. We measure A{sub CP}(D{sup 0} {yields} {pi}{sup +}{pi}{sup -}) = (+0.22 {+-} 0.24(stat) {+-} 0.11 (syst))% and A{sub CP}(D{sup 0} {yields} K{sup +}K{sup -}) = (-0.24 {+-} 0.22 (stat) {+-} 0.09 (syst))%, in agreement with CP conservation. These are the most precise determinations from a single experiment to date. Under the assumption of negligible direct CP violation in D{sup 0} {yields} {pi}{sup +}{pi}{sup -} and D{sup 0} {yields} K{sup +}K{sup -} decays, the results provide an upper limit to the CP-violating asymmetry in D{sup 0} mixing, |A{sub CP}{sup ind}(D{sup 0})| < 0.13% at the 90% confidence level.

  19. Measurement of CP-violating asymmetries in D[superscript 0]??[superscript +]?[superscript -] and D[superscript 0]?K[superscript +]K [superscript -] decays at CDF

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We report on a measurement of CP-violating asymmetries (ACP) in the Cabibbo-suppressed D[superscript 0]??[superscript +]?[superscript -] and D[superscript 0]?K[superscript +]K [superscript -] decays reconstructed in a ...

  20. Measurement of the relative fraction of t t events produced via gluonfusion in pp collision at # s = 1.96 TeV at CDF

    E-Print Network [OSTI]

    Quigg, Chris

    #12; Dedication For my family, blood relation or not. iv #12; Table of Contents Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Dedication

  1. Properties of Jets in W Boson Events from 1.8 TeV pp Collisions F. Abe, 17 H. Akimoto, 38 A. Akopian, 31 M. G. Albrow, 7 S. R. Amendolia, 27 D. Amidei, 20 J. Antos, 33 S. Aota, 36

    E-Print Network [OSTI]

    Phillips, Thomas J.

    . Caner, 27 W. Carithers, 18 D. Carlsmith, 39 J. Cassada, 30 A. Castro, 25 D. Cauz, 27 Y. Cen, 30 A. Cerri

  2. Search for supersymmetry using a photon, b-jets, and ETmiss final state with the ATLAS detector in proton-proton collisions at 8 TeV center-of-mass energy

    E-Print Network [OSTI]

    Kuhl, Andrew

    2015-01-01

    Abe et al. , “Search for proton decay via p ? ?K + using 260AND E T miss FINAL STATE WITH THE ATLAS DETECTOR IN PROTON-PROTON COLLISIONS AT 8 TEV CENTER-OF-MASS ENERGY A

  3. PowerPoint Presentation

    Office of Environmental Management (EM)

    and Guy Sliker * NGK - Hiroyuke Abe * EPRI funders (Con Edison, CPS Energy, HECO, Hydro One, NYISO, SDG&E, and TVA) 3 2009 Electric Power Research Institute, Inc. All...

  4. Efficacy of high-concentration tacalcitol ointment in psoriasis vulgaris after changing from other high-concentration vitamin D3 ointments

    E-Print Network [OSTI]

    Abe, Masatoshi; Syuto, Tomoko; Ishibuchi, Hirohisa; Sogabe, Yoko; Yokoyama, Yoko; Ishikawa, Osamu

    2008-01-01

    D3, a novel active form of vitamin D3 with high activity forIqbal SJ, Hutchinson PE. Vitamin D analogues in psoriasis:other high-concentration vitamin D3 ointments Masatoshi Abe

  5. Metastable supersymmetry breaking vacua from conformal dynamics...

    Office of Scientific and Technical Information (OSTI)

    model. Furthermore, we can construct 5D models with the same behavior, because of the AdSCFT duality. Authors: Abe, Hiroyuki 1 ; Kobayashi, Tatsuo 2 ; Omura, Yuji 3 +...

  6. Blue Waters An Extraordinary Computer to Enable Extraordinary Research

    E-Print Network [OSTI]

    Blue Waters An Extraordinary Computer to Enable Extraordinary Research Thom Dunning National Center for Supercomputing Applications Blue Waters Extraordinaire · 25 February 2011 · Pacific Northwest National Laboratory (NCSA Building, NPCF) · Three major computing systems (Abe, Lincoln, Ember) Blue Waters Extraordinaire

  7. ANNOTATED RESEARCH BIBLIOGRAPHY FOR GEOTHERMAL RESERVOIR ENGINEERING

    E-Print Network [OSTI]

    Sudo!, G.A

    2012-01-01

    M. and Abe, H. Shape by Hydraulic Fracturing s e r v o i rprinciples involved i n hydraulic fracturing are out1 ined.crack during hydraulic fracturing has been investigated. I t

  8. IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS--PART B: CYBERNETICS, VOL. 29, NO. 4, AUGUST 1999 525 Function Approximation Based on Fuzzy Rules

    E-Print Network [OSTI]

    Thawonmas, Ruck

    IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS--PART B: CYBERNETICS, VOL. 29, NO. 4, AUGUST Systems Engineering, Kochi University of Technology, Kochi 782-8502, Japan. S. Abe is with the Department

  9. Advanced method for high-throughput expression of mutated eukaryotic...

    Office of Scientific and Technical Information (OSTI)

    ; Murata, Takeshi 2 ; Department of Medical Chemistry, Kyoto University, Faculty of Medicine, Konoe-cho, Yoshida, Sakyo-Ku, Kyoto 606-8501 4 ; Abe, Keiko 1 ; Iwata, So 2 ;...

  10. Fluorescence-based optimization of human bitter taste receptor...

    Office of Scientific and Technical Information (OSTI)

    ; Murata, Takeshi 2 ; Department of Medical Chemistry, Kyoto University Faculty of Medicine, Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501 4 ; Abe, Keiko 1 ; Iwata, So,...

  11. Using Wildlife Species Richness to Identify Land Protection Priorities in California's Hardwood

    E-Print Network [OSTI]

    . 2 Wildlife Biologist, California Department of Forestry and Fire Protection (CDF), Sacramento; Senior Wildlife Biologist, Jones and Stokes Associates, Inc. Sacramento, California; Operations Research and GIS Specialist, CDF, Sacramento; and GIS Manager, Teale Data Center, Sacramento. Nancy D. Tosta2

  12. Physics at Tevatron Run II

    E-Print Network [OSTI]

    Daria Zieminska

    2004-11-11

    We present recent physics results from the Tevatron Collider experiments CDF and D0. (contribution to Lattice 2004)

  13. Search for production of an ?(1S) meson in association with a W or Z boson using the full 1.96 TeV p[bar over p] collision data set at CDF

    E-Print Network [OSTI]

    Aaltonen, T.

    Production of the ?(1S) meson in association with a vector boson is a rare process in the standard model with a cross section predicted to be below the sensitivity of the Tevatron. Observation of this process could signify ...

  14. Measurement of the production cross-section ratio t tj 106:0 4:1 pb 1 of data collected by CDF during Run1A+1B

    E-Print Network [OSTI]

    Quigg, Chris

    College, New Hampshire) 1994 M.S. (University of California, Davis) 1998 DISSERTATION Submitted in partial STUDIES of the UNIVERSITY OF CALIFORNIA DAVIS Approved: Prof. Richard Lander Prof. Dave Pellett Prof. Jack Gary Weeks, who stimulated my mathematical interests. #15; At Dartmouth, Bill Doyle, who re-kindled my

  15. Measurement of the Single Top Quark Cross Section in the Lepton Plus Jets Final State in Proton-Antiproton Collisions at a Center of Mass Energy of 1.96 TeV Using the CDF II Detector

    SciTech Connect (OSTI)

    Wu, Zhenbin

    2012-01-01

    We present a measurement of the single top quark cross section in the lepton plus jets final state using an integrated luminosity corresponding to 7.5~\\text{fb}^{-1} of p\\bar p collision data collected by the Collider Detector at Fermilab. The single top candidate events are identified by the signature of a charged lepton, large missing transverse energy, and two or three jets with at least one of them identified as originating from a bottom quark. A new Monte Carlo generator \\textsc{powheg} is used to model the single top quark production processes, which include {s}-channel, {t}-channel, and {Wt}-channel. A neural network multivariate method is exploited to discriminate the single top quark signal from the comparatively large backgrounds. We measure a single top production cross section of $3.04^{+0.57}_{-0.53}$ (\\mathrm{stat.~+~syst.}) pb assuming $m_{\\rm top}=172.5$~GeV/$c^2$. In addition, we extract the CKM matrix element value $|V_{tb}|=0.96\\pm 0.09~(\\mathrm{stat.~+~syst.})\\pm 0.05~(\\mathrm{theory})$ and set a lower limit of |V_{tb}|>0.78 at the 95\\% credibility level.

  16. Invariant-Mass Distribution of Jet Pairs Produced in Association with a W Boson in p[bar over p] Collisions at ?s = 1.96 TeV Using the Full CDF Run II Data Set

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We report on a study of the dijet invariant-mass distribution in events with one identified lepton, a significant imbalance in the total event transverse momentum, and two jets. This distribution is sensitive to the possible ...

  17. Measurement of the Difference in CP-Violating Asymmetries in D[superscript 0]?K[superscript +]K[superscript -] and D[superscript 0]??[superscript +]?[superscript -] Decays at CDF

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We report a measurement of the difference (?ACP) between time-integrated CP-violating asymmetries in D[superscript 0]?K[superscript +]K[superscript -] and D[superscript 0]??[superscript +]?[superscript -] decays reconstructed ...

  18. Fourth HERA-LHC Workshop May 26-30, 2008

    E-Print Network [OSTI]

    Field, Richard

    Fourth HERA-LHC Workshop May 26-30, 2008 Rick Field ­ Florida/CDF/CMS Page 1 "Leading Jet" vs Z. #12;Fourth HERA-LHC Workshop May 26-30, 2008 Rick Field ­ Florida/CDF/CMS Page 2 "Leading Jet" vs Z Group Deepak Kar #12;Fourth HERA-LHC Workshop May 26-30, 2008 Rick Field ­ Florida/CDF/CMS Page 3 QCD

  19. Press Pass - Press Release - Discovery of Y particle

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    kurtr@fnal.gov Graphics and photos are available at: http:www.fnal.govpubpresspasspressreleasesY-particle-20090318-images.html Particle oddball surprises CDF physicists at...

  20. New Physics in Top at Tevatron

    E-Print Network [OSTI]

    Amnon Harel; for the CDF Collaboration; for the D0 Collaboration

    2011-09-18

    I report on direct and indirect searches for new physics in top events from the CDF and D0 Collaborations at the Fermilab Tevatron Collider.

  1. California’s Water Footprint: recent trends and framework for a sustainable transition

    E-Print Network [OSTI]

    Fulton, Julian

    2015-01-01

    Africa. Barbier, EB. 2004. “Water and Economic Growth. ”Sri Lanka: International Water Management Institute. CDF,California Department of Water Resources. 2015. “California

  2. STATE OF MISSOURI DEPARTMENT OF NATURAL RESOURCES MISSOURI CLEAN...

    National Nuclear Security Administration (NNSA)

    & Wildlife Watering (LWW), Protection of Warm Water Aquatic Life and Human Health-Fish Consumption (AQL), Cool Water Fishery(CLF), Cold Water Fishery (CDF), Whole Body...

  3. New Mexico Center for Particle Physics (NMCPP) -- Task A: Collider Physics; Task A2: Collider Physics; Task B: Particle Astrophysics

    SciTech Connect (OSTI)

    Matthews, John; Seidel, Sally; Gold, Michael

    2013-11-05

    During the period 2010-­?2012, we conducted particle physics research with the ATLAS and CDF experiments and developed new instrumentation for tracking fundamental particles.

  4. Doorways

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    institutions sign a Memorandum of Understanding with Fermilab to collaborate on superconduct- ing materials and superconducting acceleration technology. March 9 CDF and DZero...

  5. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    gives theoretically appealing solutions to several significant issues in particle physics as well as in cosmology. CDF and D0 experiments at the Tevatron collider at...

  6. Fermilab | Press Room | Images

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    When using this material please credit Fermilab. Return to Press Release Med Res | Hi Res Scientists from the CDF and DZero collaborations at DOE's Fermilab have combined...

  7. Fermilab Today

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Kephart, director of the Illinois Accelerator Research Center, and Steve Dixon, CDF refurbishment project manager, wrote this column. Several people recently asked me why the...

  8. Diffractive Production of Jets and Vector Bosons at the Tevatron

    E-Print Network [OSTI]

    Kenichi Hatakeyama; for the CDF Collaboration

    2008-12-08

    Recent results on diffractive dijet and vector boson production and exclusive dijet production from the Collider Detector at Fermilab (CDF) experiment are presented.

  9. International Influence Marks Distinguished Career for Art Muehling

    E-Print Network [OSTI]

    Gilbert, Matthew

    . The underlying processes are institutional transformation, cost reduction, and revenue generation. The outcomes we present a new ABE@Illinois magazine to a very large audience. Many new things are happening on our initiative, a campus-wide program that hopes to address the fiscal challenges our institution currently faces

  10. Organic Greenhouse Container Herb Production in South Florida: Fertilizer and Potting Media1

    E-Print Network [OSTI]

    Migliaccio, Kati White

    ABE 373 Organic Greenhouse Container Herb Production in South Florida: Fertilizer and Potting Media climate and high number of pest and disease pressures. Thus, greenhouse production of organic herbs may and fertilizers for organic herb production in greenhouses in this climate. Objectives Greenhouse trials were

  11. Academic and Research Computing 16 Academic Calendar 4

    E-Print Network [OSTI]

    Varela, Carlos

    Halls and Other Performance Venues and Classrooms 110 Active Building Envelope (ABE) 112 Active Room Acoustics and Room Tuning Using Electroacoustics 110 Administration 595 Admissions 35 Advanced Materials 156 Advanced STS options 284 Advisers 75 Advising and Learning Assistance Center 18 Aeronautics 212, 219

  12. 2011 Research Opportunity Fund Awards PI College (dept) Co-PIs College (dep) Title Approved Budget

    E-Print Network [OSTI]

    Sin, Peter

    and Org Studies) Angelini, Thomas COE (MAE) Eric McLamore IFAS (ABE) Angiogenic Scaffolds for Negative genes $80,000 Su, Nan-Yao IFAS (Ent and Nematology and Ft. Lauderdale REC) Monia L. Elliott IFAS (Plant and Their Potential for Production of Novel Antibiotics $79,000 Thomas Chouvenc (post doc) IFAS (Eng/Nemat and FLREC

  13. Power-aware Provisioning of Cloud Resources for Real-time Services

    E-Print Network [OSTI]

    Buyya, Rajkumar

    in the systems. Datacenters consume 10 to 100 times more en- ergy per square foot than typical office buildings, Australia {abe, raj}@csse.unimelb.edu.au ABSTRACT Reducing energy consumption has been an essential tech their services without consideration of physical hardwares, while users also can access on-demand and pay-per

  14. Photometric and Near-IR Spectroscopic Observations of a D-type Asteroid, 773 Irmintraud, by SUBARU / IRCS

    E-Print Network [OSTI]

    Hiroi, Takahiro

    / IRCS A. Kanno (Univ. of Tokyo), T. Hiroi (Brown Univ.), R. Nakamura(NASDA), M. Abe(ISAS), M. Ishiguro-IR photometric and spectroscopic observations of 773 Irmintraud by SUBARU/IRCS on February 23rd, 2002 (UT). We to the lightcurve and the rotation period, we calibrated the data taken with SUBARU/IRCS by removing the effect

  15. Mutant strain of C. acetobutylicum and process for making butanol

    DOE Patents [OSTI]

    Jain, Mahendra K. (Okemos, MI); Beacom, Daniel (East Lansing, MI); Datta, Rathin (Chicago, IL)

    1993-01-01

    A biologically pure asporogenic mutant of Clostridium acetobutylicum is produced by growing sporogenic C. acetobutylicum ATCC 4259 and treating the parent strain with ethane methane sulfonate. The mutant which as been designated C. acetobutylicum ATCC 55025 is useful in an improved ABE fermentation process, and produces high concentrations of butanol and total solvents.

  16. Environmental Engineering (For students entering the College 2010-11) It is the student's responsibility to ensure that their program and necessary prerequisites are correct

    E-Print Network [OSTI]

    Saskatchewan, University of

    Environmental Engineering (For students entering the College 2010-11) It is the student Elective, 3 cu from: ABE 212, BIOC 212, CHEM 221, EVSC 420, FAMS 212, GEOL 413 Environmental Engineering) ^ must take BIOL 120, CHEM 115, GEOL 121 as science electives in Year 1 or Year 2 Environmental Science

  17. Environmental Engineering (For students entering the College 2009-10) It is the student's responsibility to ensure that their program and necessary prerequisites are correct

    E-Print Network [OSTI]

    Saskatchewan, University of

    Environmental Engineering (For students entering the College 2009-10) It is the student Elective, 3 cu from: ABE 212, BIOC 212, CHEM 221, EVSC 420, FAMS 212, GEOL 413 Environmental Engineering) ^ must take BIOL 120, CHEM 115, GEOL 121 as science electives in Year 1 or Year 2 Environmental Science

  18. A Totally Real Folding of the Regular Heptagon Roger C. Alperin

    E-Print Network [OSTI]

    Alperin, Roger C.

    ; A V has length 26; move A to A1 and reflect back to B so that the hypotenuse BO of BOV has length 28. Trisect BOV to get the point T as in Abe's trisection (OT is the trisection with the base OB). Reflect B

  19. Temperature-induced marine export production during glacial period

    E-Print Network [OSTI]

    Chikamoto, Megumi O.

    Temperature-induced marine export production during glacial period M. O. Chikamoto,1,2 A. Abe October 2012; published 8 November 2012. [1] Proxy records indicate that export production was enhanced at the onset of the last glaciation. We examine how glacial cooling affects marine export production through

  20. Decentralizing Attribute-Based Encryption Allison Lewko

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    @cs.utexas.edu Brent Waters University of Texas at Austin bwaters@cs.utexas.edu Abstract We propose a Multi parameters. A party can simply act as an ABE authority by creating a public key and issuing private keys and prevent collusion attacks between users with different global identifiers. We prove our system secure

  1. Generalizing Case Frames Using a Thesaurus and the MDL Principle

    E-Print Network [OSTI]

    Generalizing Case Frames Using a Thesaurus and the MDL Principle Hang Li* NEC Corporation Naoki Abe, the proposed method makes use of an existing thesaurus and restricts its attention to those partitions that are present as "cuts" in the thesaurus tree, thus reducing thegeneralization problem to that ofestimating

  2. Reid Rosnick/DC/USEPA/US 05/21/2010 06:59 AM

    E-Print Network [OSTI]

    : NESHAP Subpart W: Standards for Radon Emissions from Operating Uranium Mill Tailings - New ORD Lead Hi/CI/USEPA/US@EPA, David Carson/CI/USEPA/US@EPA, Souhail Al-Abed/CI/USEPA/US@EPA Date: 05/20/2010 03:39 PM Subject: NESHAP Subpart W: Standards for Radon Emissions from Operating Uranium Mill Tailings - New ORD Lead Hi Reid, I

  3. 694 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 49, NO. 4, APRIL 2001 Blind Source Separation Using Second-Order

    E-Print Network [OSTI]

    694 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 49, NO. 4, APRIL 2001 Blind Source Separation it for publication was Prof. Bjorn Ottersten. K. Abed-Meraim is with the Signal and Image Processing Department with the assumption that the source signals are cyclostationary. Identifiability and separability criteria based

  4. The Ocean Lithosphere: A Fundamental Component of the Earth System

    E-Print Network [OSTI]

    Demouchy, Sylvie

    between the solid Earth, oceans and biosphere, both full penetration across the Moho and shallow targeted1 The Ocean Lithosphere: A Fundamental Component of the Earth System Damon Teagle1 , Natsue Abe2 formation at mid-ocean ridges, to its recycling in subduction zones, the oceanic lithosphere serves

  5. ACCEPTED IN IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. XX, NO. XX, 2004 1 Damped and Delayed Sinusoidal Model for

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    [15], source localization [22], biomedical signal processing [25] and audio signal compression [2ACCEPTED IN IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. XX, NO. XX, 2004 1 Damped and Delayed Sinusoidal Model for Transient Signals R´emy Boyer and Karim Abed-Meraim Abstract-- In this work, we present

  6. Engineering This seminar will focus on the recent progress in

    E-Print Network [OSTI]

    glucose and xylose can be simultaneously converted to butyric acid by C. tyrobutyricum immobilized in a fibrous bed bioreactor (FBB), with a high butyric acid yield of >45% and high final concentration of >80 g/L. Also, co-feeding butyric acid with sugars to the ABE fermentation with C. acetobutylicum immobilized

  7. Application of monoclonal antibodies to investigate plant cell wall deconstruction for biofuels production

    E-Print Network [OSTI]

    California at Riverside, University of

    Application of monoclonal antibodies to investigate plant cell wall deconstruction for biofuels production Jaclyn D. DeMartini,abe Sivakumar Pattathil,ce Utku Avci,ce Kaitlyn Szekalski,c Koushik Mazumder Lignocellulosic biomass is the only sustainable resource for large-scale production of liquid transportation fuel

  8. New Constructions and Proof Methods for Large Universe Attribute-Based Encryption

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    New Constructions and Proof Methods for Large Universe Attribute-Based Encryption Yannis Rouselakis University of Texas at Austin jrous@cs.utexas.edu Brent Waters University of Texas at Austin bwaters@cs.utexas.edu Abstract We propose two large universe Attribute-Based Encryption constructions. In a large universe ABE

  9. MobiCom Poster Abstract: Bandwidth Reservation using WLAN Handoff Prediction

    E-Print Network [OSTI]

    Kotz, David

    mobility. The success of predictions depend on how much accu- racy can be achieved on real data), is their movement history. We assume that there is a centralized or distributed mechanism in place for (iCDF Individual predictor and the MarkovCDF Aggregate predictor, respectively. We introduce a simple "straw

  10. Combination of tevatron searches for the standard model Higgs Boson for observing antiferromagnetism and superfluidity

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We combine searches by the CDF and D0 Collaborations for a Higgs boson decaying to W[superscript +]W[superscript -]. The data correspond to an integrated total luminosity of 4.8 (CDF) and 5.4 (D0) fb[superscript -1] of pp? ...

  11. Search for the Higgs Boson Decaying to Two Tau Leptons in Proton-Antiproton Collisions at a Center of Mass Energy of 1.96 TeV 

    E-Print Network [OSTI]

    Elagin, Andrey

    2012-02-14

    . . . . . . . . . . . . . . . . . . . . . . . . . . 35 1. Baseline Hadronic Tau Jet Reconstruction at CDF . . 35 2. Implementation Strategy . . . . . . . . . . . . . . . . 36 3. Response Functions of the CDF Detector Sub-systems 37 4. Computation of the PPFA Likelihood . . . . . . . . . 39 viii... . . . . . . . . . . . . . 84 C. Backgrounds . . . . . . . . . . . . . . . . . . . . . . . . . . 84 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . 84 2. Normalization of the W+jets MC sample. . . . . . . . 86 ix CHAPTER Page a. Jet Counting Scale Factors...

  12. Reminder:! homework grades and comments are on OAK!

    E-Print Network [OSTI]

    Palmeri, Thomas

    ? #12;RTj = 1 n rti i=1 n mean RT - overall mean RT in a given condition function (CDF) RTj = 1 n rti i=1 n mean RT F! j (t) = #elements in sample t n #12;cumulative distribution function (CDF) RTj = 1 n rti i=1 n mean RT F! j (t) = #elements in sample t n probability

  13. nature physics | VOL 7 | FEBRUARY 2011 | www.nature.com/naturephysics 93 In early January, the closure of Fermilab's

    E-Print Network [OSTI]

    Loss, Daniel

    over as the world's highest-energy accelerator. Director of Fermilab Pier Oddone must now chart the way Tevatron experiments, CDF and D0, had won the backing of the US Department of Energy's High Energy Particle of data that have made it possible for CDF and D0 physicists to push harder than ever against the bounds

  14. Algorithms for Incorporation of Dynamic Recovery in Estimating Frequency of Critical Station Blackout 

    E-Print Network [OSTI]

    Rodi, Paul J.

    2012-07-16

    Table 1.1 Nonrecovery Integral Functions. Function (meaning) Data Source Reference G (cdf for offsite recovery) Section III, esp. Tables 3-1 and 3-2, of NUREG/CR-6890, Vol. 2. [5] F (cdf for independent failure of the EDGs) Section III, esp.... Table 3-3 of NUREG/CR-6890, Vol. 2. [8] R (cdf for repair of the EDGs) Page 31 of NUREG/CR-6890, Vol. 2. [5] f (pdf for failure of the EDGs)* Tables 4-2, of NUREG/CR-6890, Vol. 2. [10] * Not directly shown in Equation (1.1) but used in its...

  15. Asymmetries at the Tevatron

    E-Print Network [OSTI]

    Pavol Bartos; for the CDF; D0 collaborations

    2014-10-28

    In this report, we summarize the latest results of the top-quark pair production asymmetry and present the new result of bottom-quark pair production asymmetry. By looking at the results obtained by the CDF experiment, one can see a discrepancy in both $t\\bar{t}$ inclusive and lepton-based measurements. The D0 results of the $t\\bar{t}$ production asymmetry are compatible with the standard-model predictions as well as with the CDF results. The CDF measurement of $b\\bar{b}$ production asymmetry presents consistency with both zero and with the standard-model predictions.

  16. Feasibility study of air-breathing turbo-engines for horizontal take-off and landing space plane

    SciTech Connect (OSTI)

    Minoda, M.; Sakata, K.; Tamaki, T.; Saitoh, T.; Yasuda, A.

    1989-01-01

    Various concepts of air-breathing engines (ABEs) that could be used for a horizontal take-off and landing SSTO vehicle are investigated. The performances (with respect to thrust and the specific fuel consumption) of turboengines based on various technologies, including a turbojet with and without afterburner (TJ), turboramjet, and air-turbo-ram jet engines are compared. The mission capabilities of these ABEs for SSTO and TSTO vehicles is examined in terms of the ratio of the effective remaining weight (i.e., the weight on the orbit) to the take-off gross weight, using two-dimensional flight analysis. It was found that the dry TJ with the turbine inlet temperature 2000 C is one of the most promising candidates for the propulsion system of the SSTO vehicle, because of its small weight and high specific impulse. 6 refs.

  17. Applications of Exploratory Q-Matrix Discovery Procedures in Diagnostic Classification Models

    E-Print Network [OSTI]

    Fall, Emily C.

    2009-12-10

    is Low Adult Secondary Education (ASE) and level six is High ASE. Participants in each of the six functional reading levels were pooled and a random sample was taken at each level from 713 willing participants recruited from ABE and ASE programs. A... comprehension tests, must be understood. Finally, probabilistic procedures will be applied to empirical data collected from adult education participants on a series of reading comprehension tests to demonstrate the usefulness of probabilistic estimation...

  18. Boys and Girls, Be Ambitious! http://www.math.sci.hokudai.ac.jp/message/message-graduates/

    E-Print Network [OSTI]

    Nakamura, Iku

    ://www.math.sci.hokudai.ac.jp/ #12;AIKAWA, Hiroaki WebPage http://www.math.sci.hokudai.ac.jp/ aik/index-j.html Fatou Martin Harnack AKITA, Toshiyuki WebPage http://www.math.sci.hokudai.ac.jp/ akita/ Eilenberg-MacLane Coxeter #12;ASAKURA, Masanori ARAI, Asao ABE, Noriyuki WebPage http://www.math.sci.hokudai.ac.jp/ abenori/ #12;ISHIKAWA, Goo Web

  19. CX-003124: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    A1 to CDF Paving ProjectCX(s) Applied: B1.3Date: 07/08/2010Location(s): Batavia, IllinoisOffice(s): Fermi Site Office, Science

  20. Lawrence Berkeley National Laboratory April 16, 2015

    E-Print Network [OSTI]

    Circulation Model: POP2x Ice Sheet: BISICLES (CISM-BISICLES) POP + BISICLES = POPSICLES #12;· Monthly · Coupling offline using standard CISM and POP netCDF I / O · POP bathymetry and ice draft recomputed

  1. Measurement of the relative fraction of ttbar events produced...

    Office of Scientific and Technical Information (OSTI)

    produced via gluon fusion in ppbar collision at s**(12) 1.96 TeV at CDF In this thesis we present a measurement of the relative fraction of tbar t events produced via...

  2. Tevatron Constraints on Models of the Higgs Boson with Exotic Spin and Parity Using Decays to Bottom-Antibottom Quark Pairs

    E-Print Network [OSTI]

    Aaltonen, T.

    Combined constraints from the CDF and D0 Collaborations on models of the Higgs boson with exotic spin J and parity P are presented and compared with results obtained assuming the standard model value J[superscript P] = ...

  3. Press Pass - Press Releases

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    03-01 For Immediate Release February 10, 2003 PRESS CONTACTS Kurt Riesselmann, Fermilab, 630-840-3351 Fermilab offers special tours of CDF experiment on February 23 Scientists at...

  4. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    The color-singlet matrix elements are determined from electromagnetic decays and from potential models. The color-octet matrix elements are determined by fitting the CDF data on...

  5. HDF5-FastQuery: Accelerating Complex Queries on HDF Datasets...

    Office of Scientific and Technical Information (OSTI)

    data is often stored in scientific data formats such as FITS, netCDF and HDF. These storage formats are of particular interest to the scientific user community since they...

  6. How Accurate are the Gaussian and Gamma Approximations to the Outage Capacity of MIMO Channels ?

    E-Print Network [OSTI]

    Øien, Geir E.

    How Accurate are the Gaussian and Gamma Approximations to the Outage Capacity of MIMO Channels MIMO capacity complementary cumulative distribution functions, or equivalently, the outage capacity distribution function (CDF) (also known as the outage capacity), or equivalently, the capacity complementary

  7. Observation of New Charmless Decays of Bottom Hadrons

    E-Print Network [OSTI]

    Xie, Si

    We search for new charmless decays of neutral b hadrons to pairs of charged hadrons, using 1??fb[superscript -1] of data collected by the CDF II detector at the Fermilab Tevatron. We report the first observation of the ...

  8. Limits on Anomalous Trilinear Gauge Couplings in Z? Events from pp? Collisions at ?s=1.96??TeV

    E-Print Network [OSTI]

    Bauer, Gerry P.

    Using Z? candidate events collected by the CDF detector at the Tevatron Collider, we search for potential anomalous (non-standard-model) couplings between the Z boson and the photon. Z? couplings vanish at tree level and ...

  9. First Search for Multijet Resonances in root s=1.96 TeV p(p)over-bar Collisions

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present the first model independent search for three-jet hadronic resonances within multijet events in ?s=1.96??TeV pp? collisions at the Fermilab Tevatron using the CDF II detector. Pair production of supersymmetric ...

  10. Top Quark Mass Measurement in the lepton plus jets Channel Using a Matrix Element Method and in situ Jet Energy Calibration

    E-Print Network [OSTI]

    Bauer, Gerry P.

    A precision measurement of the top quark mass mt [m subscript t] is obtained using a sample of tt? events from pp? collisions at the Fermilab Tevatron with the CDF II detector. Selected events require an electron or muon, ...

  11. Search for neutral Higgs bosons in events with multiple bottom quarks at the Tevatron

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    The combination of searches performed by the CDF and D0 collaborations at the Fermilab Tevatron Collider for neutral Higgs bosons produced in association with b quarks is reported. The data, corresponding to 2.6??fb[superscript ...

  12. Search for R-Parity Violating Decays of Sneutrinos to e?, ??, and e? Pairs in pp? Collisions at ?s=1.96??TeV

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a search for supersymmetric neutrino ?˜ production using the Tevatron pp? collision data collected with the CDF II detector and corresponding to an integrated luminosity of 1??fb-1 [fb superscript -1]. We focus ...

  13. Search for New Dielectron Resonances and Randall-Sundrum Gravitons at the Collider Detector at Fermilab

    E-Print Network [OSTI]

    Bauer, Gerry P.

    A search for new dielectron-mass resonances using data recorded by the CDF II detector and corresponding to an integrated luminosity of 5.7??fb[superscript -1] is presented. No significant excess over the expected standard ...

  14. Fermilab | Newsroom | Press Releases | Tevatron experiments close...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    our analysis methods and continue to analyze our full data sets. The search for the Higgs boson is entering its most exciting, final stage." For the first time, the CDF and...

  15. Press Pass - Press Releases

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    detectors at the Tevatron, CDF and DZero, as the next possible venue for discovery of the Higgs boson, an as-yet-unseen particle that physicists believe may determine the property...

  16. Press Pass - Press Release - Higgs mass constraints

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    exclude significant fraction of Higgs territory Batavia, Ill.-The territory where the Higgs boson may be found continues to shrink. The latest analysis of data from the CDF and...

  17. 558 nature physics | VOL 6 | AUGUST 2010 | www.nature.com/naturephysics research highlights

    E-Print Network [OSTI]

    Loss, Daniel

    green sulphur bacteria to carry out photosynthesis. Their electronic spectroscopy data indicate uncertainty of the CDF result has been considerably reduced. Warm and fuzzy Proc. Natl Acad. Sci. USA doi:10

  18. Press Pass - Press Release - B Hadron

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    most fundamental building blocks of matter. The CDF collaboration discovered two types of Sigma-sub-b particles, each one about six times heavier than a proton. There are six...

  19. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    andor additional leptons and photons, and jets (X). We use the same kinematic selection criteria as in a previous CDF search, but with a substantially larger data set, 305 pbsup...

  20. Measurement of the Bottom Baryon Resonances b C. Calancha (CIEMAT), J.P. Fernandez (CIEMAT),

    E-Print Network [OSTI]

    Quigg, Chris

    Measurement of the Bottom Baryon Resonances b and b C. Calancha (CIEMAT), J.P. Fernandez (CIEMAT), I. Gorelov (University of New Mexico), L. Labarga (CIEMAT), S. Seidel (University of New Mexico) CDF

  1. Overhearing in 802.11 mesh networks

    E-Print Network [OSTI]

    Afanasyev, Mikhail

    2009-01-01

    through a port on an HP 2626-PWR switch. There are sevenuplink, but no neighbors in the mesh. ) CDF of nodes Pwr5 Pwr 10 Pwr 15 Pwr 20 Pwr 30 Pwr 40 Pwr 50 Pwr 60

  2. $B^0_{s}$ mixing and decays at the Tevatron

    SciTech Connect (OSTI)

    Talby, Mossadek

    2007-07-01

    This short review reports on recent results from CDF and D0 experiments at the Tevatron collider on B{sup 0}{sub s} mixing and the lifetimes of B{sup 0}{sub s} and {Lambda}{sub b}.

  3. Fermilab | Newsroom | Press Releases | February 2014: Scientists...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    jpeg images. When using these images, please credit each photo as indicated. Med Res | Hi Res Matteo Cremonesi, left, of the University of Oxford and the CDF collaboration, and...

  4. Climate Data Operators (CDO)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Data Operators (CDO) Climate Data Operators (CDO) Description and Overview CDO is a large tool set for working on climate data. NetCDF 34, GRIB including SZIP compression,...

  5. Combination of measurements of the top-quark pair production cross section from the Tevatron Collider

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We combine six measurements of the inclusive top-quark pair (t[bar over t]) production cross section (?[subscript tt]-) from data collected with the CDF and D0 detectors at the Fermilab Tevatron with proton-antiproton ...

  6. Study of Orbitally Excited B Mesons and Evidence for a New B? Resonance

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    Using the full CDF Run II data sample, we report evidence for a new resonance, which we refer to as B(5970), found simultaneously in the B[superscript 0]?[superscript +] and B[superscript +]?[superscript ?] mass distributions ...

  7. Stochastic Analysis of Advection-diffusion-Reactive Systems with Applications to Reactive Transport in Porous Media

    SciTech Connect (OSTI)

    Tartakovsky, Daniel

    2013-08-30

    We developed new CDF and PDF methods for solving non-linear stochastic hyperbolic equations that does not rely on linearization approximations and allows for rigorous formulation of the boundary conditions.

  8. Aqueous biphasic extraction of uranium and thorium from contaminated soils. Final report

    SciTech Connect (OSTI)

    Chaiko, D.J.; Gartelmann, J.; Henriksen, J.L.; Krause, T.R.; Deepak; Vojta, Y.; Thuillet, E.; Mertz, C.J.

    1995-07-01

    The aqueous biphasic extraction (ABE) process for soil decontamination involves the selective partitioning of solutes and fine particulates between two immiscible aqueous phases. The biphase system is generated by the appropriate combination of a water-soluble polymer (e.g., polyethlene glycol) with an inorganic salt (e.g., sodium carbonate). Selective partitioning results in 99 to 99.5% of the soil being recovered in the cleaned-soil fraction, while only 0.5 to 1% is recovered in the contaminant concentrate. The ABE process is best suited to the recovery of ultrafine, refractory material from the silt and clay fractions of soils. During continuous countercurrent extraction tests with soil samples from the Fernald Environmental Management Project site (Fernald, OH), particulate thorium was extracted and concentrated between 6- and 16-fold, while the uranium concentration was reduced from about 500 mg/kg to about 77 mg/kg. Carbonate leaching alone was able to reduce the uranium concentration only to 146 mg/kg. Preliminary estimates for treatment costs are approximately $160 per ton of dry soil. A detailed flowsheet of the ABE process is provided.

  9. Recent Results of Top Quark Physics from the Tevatron

    E-Print Network [OSTI]

    R. Y. Peters; on behalf of the D0; CDF collaborations

    2015-07-09

    Twenty years after its discovery in 1995 by the CDF and D0 collaborations at the Tevatron proton-antiproton collider at Fermilab, the top quark still undergoes intensive studies at the Tevatron and the LHC at CERN. In this article, recent top quark physics results from CDF and D0 are reported. In particular, measurements of single top quark and double top quark production, the ttbar forward-backward asymmetry and the top quark mass are discussed.

  10. MEASUREMENT OF THE t t PRODUCTION CROSS SECTION IN p p COLLISIONS AT

    E-Print Network [OSTI]

    Quigg, Chris

    LEPTON+JETS EVENTS IN THE CDF DETECTOR AT FERMILAB MEDIDA DE LA SECCI #19; ON EFICAZ DE PRODUCCI #19; ON t #22; t EN COLISIONES p#22;p CON p s = 1:96 TeV UTILIZANDO SUCESOS DE LEPTON+JETS EN EL DETECTOR CDF DE Ciencias de la Universidad de Cantabria, y D. Ger- vasio G#19;omez Gramuglio, investigador Ram#19;on y

  11. Life-cycle assessment of corn-based butanol as a potential transportation fuel.

    SciTech Connect (OSTI)

    Wu, M.; Wang, M.; Liu, J.; Huo, H.; Energy Systems

    2007-12-31

    Butanol produced from bio-sources (such as corn) could have attractive properties as a transportation fuel. Production of butanol through a fermentation process called acetone-butanol-ethanol (ABE) has been the focus of increasing research and development efforts. Advances in ABE process development in recent years have led to drastic increases in ABE productivity and yields, making butanol production worthy of evaluation for use in motor vehicles. Consequently, chemical/fuel industries have announced their intention to produce butanol from bio-based materials. The purpose of this study is to estimate the potential life-cycle energy and emission effects associated with using bio-butanol as a transportation fuel. The study employs a well-to-wheels analysis tool--the Greenhouse Gases, Regulated Emissions and Energy Use in Transportation (GREET) model developed at Argonne National Laboratory--and the Aspen Plus{reg_sign} model developed by AspenTech. The study describes the butanol production from corn, including grain processing, fermentation, gas stripping, distillation, and adsorption for products separation. The Aspen{reg_sign} results that we obtained for the corn-to-butanol production process provide the basis for GREET modeling to estimate life-cycle energy use and greenhouse gas emissions. The GREET model was expanded to simulate the bio-butanol life cycle, from agricultural chemical production to butanol use in motor vehicles. We then compared the results for bio-butanol with those of conventional gasoline. We also analyzed the bio-acetone that is coproduced with bio-butanol as an alternative to petroleum-based acetone. Our study shows that, while the use of corn-based butanol achieves energy benefits and reduces greenhouse gas emissions, the results are affected by the methods used to treat the acetone that is co-produced in butanol plants.

  12. Fourth generation quark mass limits in CKM-element space

    E-Print Network [OSTI]

    Christian J. Flacco; Daniel Whiteson; Matthew Kelly

    2011-01-25

    We present a reanalysis of CDF data to extend limits on individual fourth-generation quark masses from particular flavor-mixing rates to the entire space of possible mixing values. Measurements from CDF have set individual limits on masses, $m_{b'}$ and $m_{t'}$, at the level of $335$--$385$ GeV assuming specific and favorable flavor-mixing rates. We consider the space of possible values for the mixing rates and find that the CDF data imply limits of $290$ GeV and greater over a wide range of mixing scenarios. We also analyze the limits from the perspective of a four-generation CKM matrix. We find that present experimental constraints on CKM elements do not suggest further constraints on fourth-generation quark masses.

  13. Dark Forces At The Tevatron

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Buckley, Matt; Fileviez Perez, Pavel; Hooper, Dan; Neil, Ethan

    2011-08-19

    A simple explanation of the W + dijet excess recently reported by the CDF collaboration involves the introduction of a new gauge boson with sizable couplings to quarks, but with no or highly suppressed couplings to leptons. Anomaly-free theories which include such a leptophobic gauge boson must also include additional particle content, which may include a stable and otherwise viable candidate for dark matter. Based on the couplings and mass of the Z` required to generate the CDF excess, we predict such a dark matter candidate to possess an elastic scattering cross section with nucleons on the order of ?more »~ 10-40 cm2, providing a natural explanation for the signals reported by the CoGeNT and DAMA/LIBRA collaborations. In this light, CDF may be observing the gauge boson responsible for the force which mediates the interactions between the dark and visible matter of our universe.« less

  14. Capturing the response of Clostridium acetobutylicum to chemical stressors using a regulated genome-scale metabolic model

    SciTech Connect (OSTI)

    Dash, Satyakam [Pennsylvania State Univ., University Park, PA (United States); Mueller, Thomas J. [Pennsylvania State Univ., University Park, PA (United States); Venkataramanan, Keerthi P. [Delaware Biotechnology Institute, Newark, DE (United States); Univ. of Delaware, Newark, DE (United States); Papoutsakis, Eleftherios T. [Delaware Biotechnology Institute, Newark, DE (United States); Univ. of Delaware, Newark, DE (United States); Maranas, Costas D. [Pennsylvania State Univ., University Park, PA (United States)

    2014-10-14

    Clostridia are anaerobic Gram-positive Firmicutes containing broad and flexible systems for substrate utilization, which have been used successfully to produce a range of industrial compounds. Clostridium acetobutylicum has been used to produce butanol on an industrial scale through acetone-butanol-ethanol (ABE) fermentation. A genome-scale metabolic (GSM) model is a powerful tool for understanding the metabolic capacities of an organism and developing metabolic engineering strategies for strain development. The integration of stress related specific transcriptomics information with the GSM model provides opportunities for elucidating the focal points of regulation.

  15. The effect of hydrogen sulfide on straight-run gasoline during storage 

    E-Print Network [OSTI]

    Miller, Alvin Junius

    1934-01-01

    %hah ihs tiaiaeeae eaa of the seas ceder se bbo ', ~ salfi4e scasosexeht~e? sails bbo flask iodine ?stsos sass yrso&tosllg the esse ss4 isdstaostosh sf ths sassy ef hp48egsa satft4O ta hho saaates This tsasseee tn iodtss ~ stth btsio of sbarsgo seo... obsero?4 ts aeat4oce of . Xt fosr fsasbtoss? The sssalte of sasttcaiio ef the second fsssbios? %able t+ sgs tsdtoo Wee ef ltNLO ssaohton? & aaatl aeewA of ebtoyheeae ~ fees', sa4 Ofhce abes0 otx oeeha a ?4sshs g~~tttf of s~sw&- suthe sos fosao4 ia hho...

  16. Capturing the response of Clostridium acetobutylicum to chemical stressors using a regulated genome-scale metabolic model

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Dash, Satyakam; Mueller, Thomas J.; Venkataramanan, Keerthi P.; Papoutsakis, Eleftherios T.; Maranas, Costas D.

    2014-10-14

    Clostridia are anaerobic Gram-positive Firmicutes containing broad and flexible systems for substrate utilization, which have been used successfully to produce a range of industrial compounds. Clostridium acetobutylicum has been used to produce butanol on an industrial scale through acetone-butanol-ethanol (ABE) fermentation. A genome-scale metabolic (GSM) model is a powerful tool for understanding the metabolic capacities of an organism and developing metabolic engineering strategies for strain development. The integration of stress related specific transcriptomics information with the GSM model provides opportunities for elucidating the focal points of regulation.

  17. Abelardo Ramirez-Hernandez | Argonne National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsicloudden Documentation DataStreamsTotalproposals INITIATEDAbdelhalim AmerAbe Van

  18. Abigail Van Wassen > Graduate Student - Abruña Group > Researchers,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsicloudden Documentation DataStreamsTotalproposals INITIATEDAbdelhalim AmerAbe

  19. About ALSNews

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsicloudden Documentation DataStreamsTotalproposals INITIATEDAbdelhalim AmerAbeAbout

  20. Table 7b. Natural Gas Price, Electric Power Sector, Actual vs. Projected

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b. Natural Gas Price,

  1. Table 8. Total Natural Gas Consumption, Projected vs. Actual

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b. Natural Gas

  2. Table 9. Major U.S. Coal Mines, 2013 U.S. Energy Information Administration | Annual Coal Report 2013

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b. Natural GasMajor

  3. Table 9. Natural Gas Production, Projected vs. Actual Projected

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b. Natural

  4. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b. NaturalPrices

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b. NaturalPricesLNG

  6. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b.

  7. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b.U.S. Underground

  8. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b.U.S.

  9. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b.U.S.Distillate by End

  10. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b.U.S.Distillate by

  11. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988 1.996Deutsche Bank AGTotal96b.U.S.Distillate

  12. Combination of Tevatron searches for the standard model Higgs boson in the W+W- decay mode

    SciTech Connect (OSTI)

    Aaltonen, T.; Abazov, V.M.; Gregores, E.M.; Mercadante, P.G.; Hebbeker, T.; Kirsch, M.; Meyer, A.; Sonnenschein, L.; Avila, C.; Gomez, B.; Mendoza, L.; /Andes U., Bogota /Argonne /Arizona U. /Athens U. /Barcelona, IFAE /Baylor U. /Bonn U. /Boston U. /Brandeis U.

    2010-01-01

    We combine searches by the CDF and D0 collaborations for a Higgs boson decaying to W{sup +}W{sup -}. The data correspond to an integrated total luminosity of 4.8 (CDF) and 5.4 (D0) fb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron collider. No excess is observed above background expectation, and resulting limits on Higgs boson production exclude a standard-model Higgs boson in the mass range 162-166 GeV at the 95% C.L.

  13. Top Quark Spin Correlations at the Tevatron

    SciTech Connect (OSTI)

    Head, Tim; /Manchester U.

    2010-07-01

    Recent measurements of the correlation between the spin of the top and the spin of the anti-top quark produced in proton anti-proton scattering at a center of mass energy of {radical}s = 1.96 Tev by the CDF and D0 collaborations are discussed. using up to 4.3 fb{sup -1} of data taken with the CDF and D0 detectors the spin correlation parameter C, the degree to which the spins are correlated, is measured in dileptonic and semileptonic final states. The measurements are found to be in agreement with Standard Model predictions.

  14. Searches for the standard model Higgs at the Tevatron

    SciTech Connect (OSTI)

    Kilminster, Ben; /Ohio State U.

    2007-05-01

    The CDF and D0 experiments at the Tevatron are currently the only capable of searching for the Standard Model Higgs boson. This article describes their most sensitive searches in the expected Higgs mass range, focusing on advanced methods used to extract the maximal sensitivity from the data. CDF presents newly updated results for H {yields} W{sup +}W{sup -} and Zh {yields} l{sup +}l{sup -}b{bar b}. D0 presents two new searches for WH {yields} lvb{bar b}. These new analyses use the same 1 fb{sup -1} dataset as previous searches, but with improved techniques resulting in markedly improved sensitivity.

  15. B_s mixing at the Tevatron

    SciTech Connect (OSTI)

    Lucchesi, Donatella; /Padua U.

    2006-08-01

    The measurement of the B{sub s} mixing oscillation frequency, {Delta}m{sup s}, has been the main goal for both experiments CDF and D0 which are running at the Tevatron collider. With 1 fb{sup -1} of data collected during the last four years D0 set a lower and upper limit on this frequency, 17 < {Delta}m{sub s} < 21 ps{sup -1}. CDF measured {Delta}m{sub s} with a precision better than 2% and the probability that the data could randomly fluctuate to mimic such a signature is 0.2%.

  16. CP Violation Studies at Tevatron

    E-Print Network [OSTI]

    E. Ben-Haim

    2007-04-20

    We present an overview of a few recent results related to CP-violation from the Tevatron. First, we discuss a measurement of the dimuon charge asymmetry from D{\\O}that extracts the CP-violation parameter of $\\Bo$ mixing and decay. This is followed by the CDF measurement of the CP-violating asymmetry in $\\bdkpi$ decays. Finally we give the CDF result on the ratio $R = \\frac{BR(B \\to D^0 K)}{BR(B \\to D^0 \\pi)}$

  17. Recent developments in heavy flavour production

    E-Print Network [OSTI]

    G. Kramer

    2007-07-12

    We review one-particle inclusive production of heavy-flavoured hadrons in a framework which resums the large collinear logarithms through the evolution of the FFs and PDFs and retains the full dependence on the heavy-quark mass without additional theoretical assumptions. We focus on presenting results for the inclusive cross section for the production of charmed mesons in p anti-p collisions and the comparison with CDF data from the Tevatron as well as on inclusive B-meson production and comparison with recent CDF data. The third topic is the production of D^* mesons in photoproduction and comparison with recent H1 data from HERA.

  18. Spectroscopic Study on the Beryllium Abundances of Red Giant Stars

    E-Print Network [OSTI]

    Takeda, Yoichi

    2014-01-01

    An extensive spectroscopic study was carried out for the beryllium abundances of 200 red giants (mostly of late G and early K type), which were determined from the near-UV Be II 3131.066 line based on high-dispersion spectra obtained by Subaru/HDS, with an aim of investigating the nature of surface Be contents in these evolved giants; e.g., dependence upon stellar parameters, degree of peculiarity along with its origin and build-up timing. We found that Be is considerably deficient (to widely different degree from star to star) in the photosphere of these evolved giants by ~1-3 dex (or more) compared to the initial abundance. While the resulting Be abundances (A(Be)) appear to weakly depend upon T_eff, log g, [Fe/H], M, age, and v_sin i, this may be attributed to the metallicity dependence of A(Be) coupled with the mutual correlation between these stellar parameters, since such tendencies almost disappear in the metallicity-scaled Be abundance ([Be/Fe]). By comparing the Be abundances (as well as their correl...

  19. Extreme Value Mixture Modelling: evmix Package and Simulation Study

    E-Print Network [OSTI]

    Scarrott, Carl

    using sample proportion which is the maximum likelihood estimate Classic GPD tail modelling approach 5 Notice that base mixture model has no requirement of density to be continuous at threshold Note: cdf is continuous, just density is not Usually physically sensible to have continuous density Some mixture models

  20. Extreme Value Mixture Modelling: P-Splines+GPD and evmix

    E-Print Network [OSTI]

    Scarrott, Carl

    estimated using sample proportion, the maximum likelihood estimate Classic GPD tail modelling approach 5 #12 #12;Further Niceties Mixture models have no requirement of density to be continuous at threshold Note: cdf is continuous, just density is not Usually physically sensible to have continuous density Various

  1. Posterior Predictive Modeling Using Multi-Scale Stochastic Inverse Parameter

    E-Print Network [OSTI]

    Ray, Jaideep

    , Coarse Scale: 30x20 cells, Continuous variables Fine Scale: Binary Media 3000x2000 cells Measured travel = proportion of high conductivity #12;Inversion 4 ~ N(0,) ij = C(xi,xj ) = aexp(- | xi - xj |2 /b2 ) F(x) = 1 proportion field Definition of Gaussian cdf provides transform between and F Ke = L(F(x),,K1,K2) Link

  2. Interagency Panel: Agency Fire Management Chair: Philip N. Omi

    E-Print Network [OSTI]

    . This was done through an interagency agreement known as the Four Party Agreement, signed by CDF, the USDA Forest, contracting for rural and urban structure fire protection. These agreements allow the fire protection agencies requiring national support. Cooperative efforts such as FIRESCOPE, the California Master Mutual Aid

  3. Bidding strategies for renewable energy generation with non stationary statistics

    E-Print Network [OSTI]

    Giannitrapani, Antonello

    function (cdf ) of the power generation at the same hour. Under the assumption of time-invariant statisticsBidding strategies for renewable energy generation with non stationary statistics A. Giannitrapani,paoletti,vicino,zarrilli}@dii.unisi.it Abstract: The intrinsic variability in non-dispatchable power generation raises important challenges

  4. Review of physics results from the Tevatron: Heavy flavor physics

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Lewis, Jonathan; Van Kooten, Rick

    2015-02-28

    We present a review of heavy flavor physics results from the CDF and D0 Collaborations operating at the Fermilab Tevatron Collider. A summary of results from Run 1 is included, but we concentrate on legacy results of charm and b physics from Run 2, including results up to Summer 2014.

  5. Combined Tevatron upper limit on gg --> H --> W[superscript +]W[superscript -] and constraints on the Higgs boson mass in fourth-generation fermion models

    E-Print Network [OSTI]

    Paus, Christoph M. E.

    We combine results from searches by the CDF and D0 collaborations for a standard model Higgs boson (H) in the process gg-->H-->W+W- in pp? collisions at the Fermilab Tevatron Collider at [sqrt]s=1.96??TeV. With 4.8??fb-1 ...

  6. Super-Boresight Pointing History File (SBPHF) Generation and Usage for S13.0

    E-Print Network [OSTI]

    Masci, Frank

    is to generate the SBPHFs offline (and manually by the pipeline operator) on a pipeline drone, archive "/scr/$SOS_REL/cdf/ingest/" on the drone where you plan to perform your ingesting (presumably the same drone where you initially created the SBPHs). This namelist has been checked into CVS under: "$SOS

  7. Best Practices in Literature Research for the 10-Year Extreme...

    Office of Environmental Management (EM)

    Distribution PDF 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 40 50 60 70 80 Maximum Wind Speed (mph) Probability Density Cumulative Distribution CDF 0.00 0.10 0.20 0.30 0.40...

  8. Measurement of the tt-bar cross section in pp-bar collisions at sqrt[s]=1.96 TeV using dilepton events with a lepton plus track selection

    E-Print Network [OSTI]

    Xie, Si

    This paper reports a measurement of the cross section for the pair production of top quarks in pp? collisions at ?s=1.96??TeV at the Fermilab Tevatron. The data were collected from the CDF run II detector in a set of runs ...

  9. Physics and Analysis at a Hadron Collider - Searching for New Physics (2/3)

    SciTech Connect (OSTI)

    2010-01-20

    This is the second lecture of three which together discuss the physics of hadron colliders with an emphasis on experimental techniques used for data analysis. This second lecture discusses techniques important for analyses searching for new physics using the CDF B_s --> mu+ mu- search as a specific example. The lectures are aimed at graduate students.

  10. Searches for Fourth Generation Fermions

    E-Print Network [OSTI]

    A. Ivanov for CDF; D0 Collaborations

    2011-09-07

    We present the results from searches for fourth generation fermions performed using data samples collected by the CDF II and D0 Detectors at the Fermilab Tevatron ppbar collider. Many of these results represent the most stringent 95% C.L. limits on masses of new fermions to-date.

  11. CMS High Luminosity Workshop Alushta, Ukraine, May 29, 2012

    E-Print Network [OSTI]

    Field, Richard

    CMS High Luminosity Workshop Alushta, Ukraine, May 29, 2012 Rick Field ­ Florida/CDF/CMS Page 1-Boson Production Z-boson Outgoing Parton Initial-State Radiation Alushta, Crimea, Ukraine, May 2012 How Universal Energy Scan (300 GeV, 900 GeV, 1.96 TeV). #12;CMS High Luminosity Workshop Alushta, Ukraine, May 29, 2012

  12. Tevatron Combination of Single-Top-Quark Cross Sections and Determination of the Magnitude of the Cabibbo-Kobayashi-Maskawa Matrix Element V[subscript tb

    E-Print Network [OSTI]

    Aaltonen, T.

    We present the final combination of CDF and D0 measurements of cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated ...

  13. Search for New Physics with a Dijet Plus Missing ET Signature in pp? Collisions at ?s=1.96??TeV

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present results of a signature-based search for new physics using a dijet plus missing transverse energy (E[subscript T]T) data sample collected in 2??fb[superscript -1] of pp? collisions at ?s=1.96??TeV with the CDF ...

  14. Search for a Fermiophobic Higgs Boson Decaying into Diphotons in pp-bar Collisions at sqrt[s]=1.96 TeV

    E-Print Network [OSTI]

    Xie, Si

    A search for a narrow diphoton mass resonance is presented based on data from 3.0??fb[superscript -1] of integrated luminosity from pp? collisions at ?s=1.96??TeV collected by the CDF experiment. No evidence of a resonance ...

  15. Observation of s-Channel Production of Single Top Quarks at the Tevatron

    E-Print Network [OSTI]

    Aaltonen, T.

    We report the first observation of single-top-quark production in the s channel through the combination of the CDF and D0 measurements of the cross section in proton-antiproton collisions at a center-of-mass energy of ...

  16. Search for scalar top quark production in p[bar over p] collisions at ?s = 1.96 TeV

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in p[¯ over p] collisions at ?s = 1.96 TeV. The data sample, collected by the CDF II detector ...

  17. Search for the Production of Narrow tb-bar Resonances in 1.9 fb-1 of pp-bar Collisions at sqrt[s]=1.96 TeV

    E-Print Network [OSTI]

    Xie, Si

    We present new limits on resonant tb? production in pp? collisions at ?s=1.96??TeV, using 1.9??fb[superscript -1] of data recorded with the CDF II detector at the Fermilab Tevatron. We reconstruct a candidate tb? mass ...

  18. Search for a new heavy gauge boson W? with event signature electron+missing transverse energy in pp? collisions at ?s=1.96??TeV

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a search for a new heavy charged vector boson W? decaying to an electron-neutrino pair in pp? collisions at a center-of-mass energy of 1.96 TeV. The data were collected with the CDF II detector and correspond ...

  19. Search for High-Mass e+e- Resonances in pp-bar Collisions at sqrt[s]=1.96 TeV

    E-Print Network [OSTI]

    Makhoul, K.

    A search for high-mass resonances in the e[superscript +]e[superscript -] final state is presented based on 2.5??fb[superscript -1] of ?s=1.96??TeV pp? collision data from the CDF II detector at the Fermilab Tevatron. The ...

  20. Elementary Particle Physics at Baylor (Final Report)

    SciTech Connect (OSTI)

    Dittmann, J.R.

    2012-08-25

    This report summarizes the activities of the Baylor University Experimental High Energy Physics (HEP) group on the Collider Detector at Fermilab (CDF) experiment from August 15, 2005 to May 31, 2012. Led by the Principal Investigator (Dr. Jay R. Dittmann), the Baylor HEP group has actively pursued a variety of cutting-edge measurements from proton-antiproton collisions at the energy frontier.

  1. Evidence for a Particle Produced in Association with Weak Bosons and Decaying to a Bottom-Antibottom Quark Pair in Higgs Boson Searches at the Tevatron

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a W or Z boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating from ...

  2. Measurement of the Mass Difference between t and t[over-bar] Quarks

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a direct measurement of the mass difference between t and t[over-bar] quarks using tt[over-bar] candidate events in the lepton+jets channel, collected with the CDF II detector at Fermilab’s 1.96 TeV Tevatron ...

  3. Search for Production of Heavy Particles Decaying to Top Quarks and Invisible Particles in pp[over-bar] Collisions at [sqrt]s=1.96??TeV

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We present a search for a new particle T? decaying to top quark via T?-->t+X, where X is an invisible particle. In a data sample with 4.8??fb[superscript -1] of integrated luminosity collected by the CDF II detector at ...

  4. Search for Exclusive Z-Boson Production and Observation of High-Mass pp-bar-->p gamma gamma p-bar-->pl+l-p-bar Events in pp-bar Collisions at s=1.96 TeV

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    This Letter presents a search for exclusive Z boson production in proton-antiproton collisions at ?s=1.96??TeV, using the CDF II detector. No exclusive Z?l+l- candidates are observed and the first upper limit on the exclusive ...

  5. Search for a Dark Matter Candidate Produced in Association with a Single Top Quark in pp? Collisions at ?s=1.96??TeV

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We report a new search for dark matter in a data sample of an integrated luminosity of 7.7??fb[superscript -1] of Tevatron pp? collisions at ?s=1.96??TeV, collected by the CDF II detector. We search for production of a ...

  6. Exclusion of an Exotic Top Quark with-4/3 Electric Charge Using Soft Lepton Tagging

    E-Print Network [OSTI]

    Paus, Christoph M. E.

    We present a measurement of the electric charge of the top quark using pp[over-bar] collisions corresponding to an integrated luminosity of 2.7??fb[superscript -1] at the CDF II detector. We reconstruct tt[over-bar] events ...

  7. Search for the Higgs Boson Using Neural Networks in Events with Missing Energy and b-Quark Jets in p[over-bar p] Collisions at [sqrt]s=1.96??TeV

    E-Print Network [OSTI]

    Paus, Christoph M. E.

    We report on a search for the standard model Higgs boson produced in association with a W or Z boson in p[over-bar p] collisions at [sqrt]s=1.96 ??TeV recorded by the CDF II experiment at the Tevatron in a data sample ...

  8. Search for Long-Lived Massive Charged Particles in 1.96 TeV pp-bar Collisions

    E-Print Network [OSTI]

    Xie, Si

    We performed a signature-based search for long-lived charged massive particles produced in 1.0??fb[superscript -1] of pp? collisions at ?s=1.96??TeV, collected with the CDF II detector using a high transverse-momentum ...

  9. Conservation-dissipation formalism of irreversible thermodynamics

    E-Print Network [OSTI]

    Yi Zhu; Liu Hong; Zaibao Yang; Wen-An Yong

    2014-07-21

    We propose a conservation-dissipation formalism (CDF) for coarse-grained descriptions of irreversible processes. This formalism is based on a stability criterion for non-equilibrium thermodynamics. The criterion ensures that non-equilibrium states tend to equilibrium in long time. As a systematic methodology, CDF provides a feasible procedure in choosing non-equilibrium state variables and determining their evolution equations. The equations derived in CDF have a unified elegant form. They are globally hyperbolic, allow a convenient definition of weak solutions, and are amenable to existing numerics. More importantly, CDF is a genuinely nonlinear formalism and works for systems far away from equilibrium. With this formalism, we formulate novel thermodynamics theories for heat conduction in rigid bodies and non-isothermal compressible Maxwell fluid flows as two typical examples. In these examples, the non-equilibrium variables are exactly the conjugate variables of the heat fluxes or stress tensors. The new theory generalizes Cattaneo's law or Maxwell's law in a regularized and nonlinear fashion.

  10. Higgs boson studies at the Tevatron

    E-Print Network [OSTI]

    Gomez-Ceballos, Guillelmo

    We combine searches by the CDF and D0 Collaborations for the standard model Higgs boson with mass in the range 90–200??GeV/c[superscript 2] produced in the gluon-gluon fusion, WH, ZH, t[¯ over t]H, and vector boson fusion ...

  11. Improved Search for a Higgs Boson Produced in Association with Z?l+l- in pp? Collisions at ?s=1.96??TeV

    E-Print Network [OSTI]

    Bauer, Gerry P.

    We search for the standard model Higgs boson produced with a Z boson in 4.1??fb-1 [fb superscript -1] of integrated luminosity collected with the CDF II detector at the Tevatron. In events consistent with the decay of the ...

  12. Time-integrated measurements of $\\gamma$ at the Tevatron and prospects

    SciTech Connect (OSTI)

    Squillacioti, Paola

    2010-12-01

    The measurement of CP-violating asymmetries and branching ratios of B {yields} DK modes allows a theoretically-clean extraction of the CKM angle {gamma}. We report recent CDF measurements with Cabibbo suppressed ({pi}{pi}, KK) or doubly Cabibbo suppressed (K{sup +}{pi}{sup -}) D decays. These measurements are performed for the first time in hadron collisions.

  13. Measurement of the dipion mass spectrum in the decay X(3872) [right arrow] J/ [psi] [pi]? [pi]? at the CDFII experiment

    E-Print Network [OSTI]

    Rakitin, Alexander (Alexander Yurevich)

    2005-01-01

    We present a measurement of the dipion mass spectrum in the decay X(3872) [right arrow] J/ [psi] [pi]? [pi]? using a 360 pb-1 sample of pp collisions at av [square root]s = 1.96 TeV collected with the CDF II detector at ...

  14. base-public_20050121_squashed.ai

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    B i k e B i k e P a t h P a t h R o a d D B a t a v i a R d CDF D-Zero Wilson Hall & Ramsey Auditorium (Public Welcome) Lake Law A.E. Sea Wilson St Wilson St. P o w e r L i n e R...

  15. Top quark mass measurement in the lepton plus jets channel using a modified matrix element method

    E-Print Network [OSTI]

    Xie, Si

    We report a measurement of the top quark mass, m_t, obtained from pp? collisions at ?s=1.96??TeV at the Fermilab Tevatron using the CDF II detector. We analyze a sample corresponding to an integrated luminosity of ...

  16. Petroleum Supply Monthly September 2004

    Gasoline and Diesel Fuel Update (EIA)

    Special Files . Tables 4, 26, 35, 51, and 52. TXT 0.4MB Early release for Petroleum Supply Monthly Highlights. TXT 0.1MB All TXT files. TXT 0.2MB CDF 0.1MB Values of Averages...

  17. Higgs boson studies at the Tevatron

    E-Print Network [OSTI]

    Baringer, Philip S.; Bean, Alice; Chen, G.; Clutter, Justace Randall; Wilson, Graham Wallace; Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Agnew, J. P.; Alexeev, G. D.

    2013-11-27

    We combine searches by the CDF and D0 Collaborations for the standard model Higgs boson with mass in the range 90–200??GeV/c(2) produced in the gluon-gluon fusion, WH, ZH, tt-barH, and vector boson fusion processes, and decaying in the H?bb-bar, H...

  18. Search for New Physics in the Exclusive Gamma+MET Final State in p-pbar Collisions at Sqrt(s) = 1.96 TeV 

    E-Print Network [OSTI]

    Aurisano, Adam 1982-

    2012-12-03

    -COLLISION BACKGROUNDS . . . . . . . . . . . . . . . . . . . . . 44 3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 3.2 Cosmic Rays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 3.3 Satellite Bunches...]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2.5 A diagram describing the data acquisition system (DAQ) at CDF. Multiple levels of triggers allow the data rate to be reduced while still retaining the most interesting events. Taken from Reference [7]. . . . 29 3.1 Cosmic rays enter...

  19. Top quark and higgs physics at the tevatron

    SciTech Connect (OSTI)

    Yao, WeiMing

    2004-10-01

    This is a writeup of my lectures given at the International Workshop on Frontiers of High Energy Physics, held at CCAST, Beijing, China during July 2-10. I discuss some basic experimental techniques for studying the Top quark and Higgsboson at the Tevatron, and review some recent results from CDF and D0 and their future prospects.

  20. Searches for Beyond SM Higgs Boson at the Tevatron

    SciTech Connect (OSTI)

    Safonov, A.; /Texas A-M

    2006-05-01

    In the following, the authors describe preliminary results of searches for non-SM higgs bosons at the CDF and D0 experiments. Both experiments use data obtained in p{bar p} collisions at the Tevatron at {radical}s = 1.96 TeV.