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Title: Search for New Particles Leading to Z+jets Final States in p anti-p Collisions at s**(1/2) = 1.96-TeV

Abstract

We present the results of a search for new particles that lead to a Z boson plus jets in p{bar p} collisions at {radical}s = 1.96 TeV using the Collider Detector at Fermilab (CDF II). A data sample with a luminosity of 1.06 fb{sup -1} collected using Z boson decays to ee and {mu}{mu} is used. We describe a completely data-based method to predict the dominant background from standard-model Z+jet events. This method can be similarly applied to other analyses requiring background predictions in multi-jet environments, as shown when validating the method by predicting the background from W+jets in t{bar t} production. No significant excess above the background prediction is observed, and a limit is set using a fourth generation quark model to quantify the acceptance. Assuming BR(b{prime} {yields} bZ) = 100% and using a leading-order calculation of the b{prime} cross section, b{prime} quark masses below 268 GeV/c2 are excluded at 95% confidence level.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
919096
Report Number(s):
FERMILAB-PUB-07-261-E
Journal ID: ISSN 0556-2821; PRVDAQ; arXiv eprint number arXiv:0706.3264; TRN: US0806312
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.D76:072006,2007
Additional Journal Information:
Journal Volume: 76; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOSONS; CROSS SECTIONS; FERMILAB COLLIDER DETECTOR; LUMINOSITY; PRODUCTION; QUARK MODEL; QUARKS; STANDARD MODEL; Experiment-HEP

Citation Formats

Aaltonen, T, /Helsinki Inst. of Phys., Abulencia, A, /Illinois U., Urbana, Adelman, J, /Chicago U., Affolder, Anthony Allen, /UC, Santa Barbara, Akimoto, T, /Tsukuba U., Albrow, Michael G, /Fermilab, Amerio, S, /Padua U., Amidei, Dante E, /Michigan U., Anastassov, A, /Rutgers U., Piscataway, Anikeev, Konstantin V, /Fermilab, Annovi, A, and /Frascati /Comenius U. Search for New Particles Leading to Z+jets Final States in p anti-p Collisions at s**(1/2) = 1.96-TeV. United States: N. p., 2007. Web. doi:10.1103/PhysRevD.76.072006.
Aaltonen, T, /Helsinki Inst. of Phys., Abulencia, A, /Illinois U., Urbana, Adelman, J, /Chicago U., Affolder, Anthony Allen, /UC, Santa Barbara, Akimoto, T, /Tsukuba U., Albrow, Michael G, /Fermilab, Amerio, S, /Padua U., Amidei, Dante E, /Michigan U., Anastassov, A, /Rutgers U., Piscataway, Anikeev, Konstantin V, /Fermilab, Annovi, A, & /Frascati /Comenius U. Search for New Particles Leading to Z+jets Final States in p anti-p Collisions at s**(1/2) = 1.96-TeV. United States. doi:10.1103/PhysRevD.76.072006.
Aaltonen, T, /Helsinki Inst. of Phys., Abulencia, A, /Illinois U., Urbana, Adelman, J, /Chicago U., Affolder, Anthony Allen, /UC, Santa Barbara, Akimoto, T, /Tsukuba U., Albrow, Michael G, /Fermilab, Amerio, S, /Padua U., Amidei, Dante E, /Michigan U., Anastassov, A, /Rutgers U., Piscataway, Anikeev, Konstantin V, /Fermilab, Annovi, A, and /Frascati /Comenius U. Fri . "Search for New Particles Leading to Z+jets Final States in p anti-p Collisions at s**(1/2) = 1.96-TeV". United States. doi:10.1103/PhysRevD.76.072006. https://www.osti.gov/servlets/purl/919096.
@article{osti_919096,
title = {Search for New Particles Leading to Z+jets Final States in p anti-p Collisions at s**(1/2) = 1.96-TeV},
author = {Aaltonen, T and /Helsinki Inst. of Phys. and Abulencia, A and /Illinois U., Urbana and Adelman, J and /Chicago U. and Affolder, Anthony Allen and /UC, Santa Barbara and Akimoto, T and /Tsukuba U. and Albrow, Michael G and /Fermilab and Amerio, S and /Padua U. and Amidei, Dante E and /Michigan U. and Anastassov, A and /Rutgers U., Piscataway and Anikeev, Konstantin V and /Fermilab and Annovi, A and /Frascati /Comenius U.},
abstractNote = {We present the results of a search for new particles that lead to a Z boson plus jets in p{bar p} collisions at {radical}s = 1.96 TeV using the Collider Detector at Fermilab (CDF II). A data sample with a luminosity of 1.06 fb{sup -1} collected using Z boson decays to ee and {mu}{mu} is used. We describe a completely data-based method to predict the dominant background from standard-model Z+jet events. This method can be similarly applied to other analyses requiring background predictions in multi-jet environments, as shown when validating the method by predicting the background from W+jets in t{bar t} production. No significant excess above the background prediction is observed, and a limit is set using a fourth generation quark model to quantify the acceptance. Assuming BR(b{prime} {yields} bZ) = 100% and using a leading-order calculation of the b{prime} cross section, b{prime} quark masses below 268 GeV/c2 are excluded at 95% confidence level.},
doi = {10.1103/PhysRevD.76.072006},
journal = {Phys.Rev.D76:072006,2007},
issn = {0556-2821},
number = ,
volume = 76,
place = {United States},
year = {2007},
month = {6}
}

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