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Title: Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV

Abstract

The t{bar t} production cross section and top quark mass are measured in proton-proton collisions at {radical}s = 7 TeV in a data sample corresponding to an integrated luminosity of 36 pb{sup -1} collected by the CMS experiment. The measurements are performed in events with two leptons (electrons or muons) in the final state. Results of the cross section measurement in events with and without b-quark identification are obtained and combined. The measured value is {sigma}{sub t{bar t}} = 168 {+-} 18 (stat.) {+-} 14 (syst.) {+-} 7 (lumi.) pb, consistent with predictions from the standard model. The top quark mass m{sub top} is reconstructed with two different methods, a full kinematic analysis and a matrix weighting technique. The combination yields a measurement of m{sub top} = 175.5 {+-} 4.6 (stat.) {+-} 4.6 (syst.) GeV/c{sup 2}.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1020308
Report Number(s):
FERMILAB-PUB-11-309-E
Journal ID: ISSN 1029-8479; arXiv eprint number arXiv:1105.5661; TRN: US1103721
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
JHEP 1107:049,2011
Additional Journal Information:
Journal Volume: 2011; Journal Issue: 7; Journal ID: ISSN 1029-8479
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; DATA; ELECTRONS; LEPTONS; LUMINOSITY; MUONS; PRODUCTION; STANDARD MODEL; T QUARKS; Experiment-HEP

Citation Formats

Chatrchyan, Serguei, Khachatryan, Vardan, Sirunyan, Albert M., Tumasyan, Armen, Adam, Wolfgang, Bergauer, Thomas, Dragicevic, Marko, Ero, Janos, Fabjan, Christian, Friedl, Markus, Fruehwirth, Rudolf, and /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV. United States: N. p., 2011. Web. doi:10.1007/JHEP07(2011)049.
Chatrchyan, Serguei, Khachatryan, Vardan, Sirunyan, Albert M., Tumasyan, Armen, Adam, Wolfgang, Bergauer, Thomas, Dragicevic, Marko, Ero, Janos, Fabjan, Christian, Friedl, Markus, Fruehwirth, Rudolf, & /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV. United States. doi:10.1007/JHEP07(2011)049.
Chatrchyan, Serguei, Khachatryan, Vardan, Sirunyan, Albert M., Tumasyan, Armen, Adam, Wolfgang, Bergauer, Thomas, Dragicevic, Marko, Ero, Janos, Fabjan, Christian, Friedl, Markus, Fruehwirth, Rudolf, and /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. Sun . "Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV". United States. doi:10.1007/JHEP07(2011)049.
@article{osti_1020308,
title = {Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV},
author = {Chatrchyan, Serguei and Khachatryan, Vardan and Sirunyan, Albert M. and Tumasyan, Armen and Adam, Wolfgang and Bergauer, Thomas and Dragicevic, Marko and Ero, Janos and Fabjan, Christian and Friedl, Markus and Fruehwirth, Rudolf and /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Yerevan Phys. Inst. /Vienna, OAW /Minsk, High Energy Phys. Ctr. /Antwerp U., WISINF /Vrije U., Brussels /Brussels U. /Gent U. /Louvain U. /UMH, Mons /Rio de Janeiro, CBPF /Rio de Janeiro State U.},
abstractNote = {The t{bar t} production cross section and top quark mass are measured in proton-proton collisions at {radical}s = 7 TeV in a data sample corresponding to an integrated luminosity of 36 pb{sup -1} collected by the CMS experiment. The measurements are performed in events with two leptons (electrons or muons) in the final state. Results of the cross section measurement in events with and without b-quark identification are obtained and combined. The measured value is {sigma}{sub t{bar t}} = 168 {+-} 18 (stat.) {+-} 14 (syst.) {+-} 7 (lumi.) pb, consistent with predictions from the standard model. The top quark mass m{sub top} is reconstructed with two different methods, a full kinematic analysis and a matrix weighting technique. The combination yields a measurement of m{sub top} = 175.5 {+-} 4.6 (stat.) {+-} 4.6 (syst.) GeV/c{sup 2}.},
doi = {10.1007/JHEP07(2011)049},
journal = {JHEP 1107:049,2011},
issn = {1029-8479},
number = 7,
volume = 2011,
place = {United States},
year = {2011},
month = {5}
}