Top quark mass measurement from dilepton events at CDF II
Abstract
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 leadingorder 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 matrixelement 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}.
 Authors:
 Publication Date:
 Research Org.:
 Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 892529
 Report Number(s):
 FERMILABPUB05551E
arXiv eprint number hepex/0512070; TRN: US0701557
 DOE Contract Number:
 AC0276CH03000
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Phys.Rev.Lett.96:152002,2006
 Country of Publication:
 United States
 Language:
 English
 Subject:
 43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; LUMINOSITY; MATRIX ELEMENTS; RESOLUTION; T QUARKS; ExperimentHEP
Citation Formats
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., and /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. Top quark mass measurement from dilepton events at CDF II. United States: N. p., 2005.
Web.
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. Top quark mass measurement from dilepton events at CDF II. United States.
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., and /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. Thu .
"Top quark mass measurement from dilepton events at CDF II". United States.
doi:. https://www.osti.gov/servlets/purl/892529.
@article{osti_892529,
title = {Top quark mass measurement from dilepton events at CDF II},
author = {Abulencia, A. and Acosta, D. and Adelman, Jahred A. and Affolder, Anthony A. and Akimoto, T. and Albrow, M.G. and Ambrose, D. and Amerio, S. and Amidei, D. and Anastassov, A. and Anikeev, K. and /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.},
abstractNote = {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 leadingorder 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 matrixelement 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}.},
doi = {},
journal = {Phys.Rev.Lett.96:152002,2006},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2005},
month = {Thu Dec 01 00:00:00 EST 2005}
}

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 leadingorder matrix element with detector resolution functions to form eventbyevent likelihoods; we have enhanced the leadingorder description to describe the effects of initialstate radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M{submore »

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