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Title: $W$ and $Z$ Boson Cross Section and $W$ Asymmetry at CMS

Abstract

We report the measurement of the rates and asymmetries of inclusive and differential production of W and Z vector bosons in pp collisions at {radical}s = 7 TeV. The data consists of 36 pb{sup -1} collected in the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC). The measured inclusive cross sections are {sigma}(pp {yields} WX) x B(W {yields} {ell}{nu}) = 10.31 {+-} 0.02(stat.){+-}0.09 (syst.){+-}0.10(th.){+-}0.41(lumi.) nb and {sigma}(pp {yields} ZX) x B(Z {yields} {ell}{ell}) = 0.975 {+-} 0.007(stat.){+-}0.007 (syst.){+-}0.018(th.){+-}0.039(lumi.) nb. The measured inclusive cross sections and also its ratio of W to Z or W{sup +} to W{sup -} agree with NNLO QCD cross section calculations and current parton distribution functions (PDFs). The differential production asymmetry of W boson as a function of the lepton pseudorapidity in the final state is also measured and compared with various PDFs.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1027228
Report Number(s):
FERMILAB-CONF-11-516-CMS
arXiv eprint number arXiv:1110.0152; TRN: US1105185
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: Prepared for DPF 2011, Providence, Rhode Island, USA, 9-13 Aug 2011
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASYMMETRY; BOSONS; CROSS SECTIONS; DISTRIBUTION FUNCTIONS; HADRONS; INTERMEDIATE BOSONS; LEPTONS; MUONS; PRODUCTION; QUANTUM CHROMODYNAMICS; SOLENOIDS; VECTORS; Experiment-HEP

Citation Formats

Han, Jiyeon. $W$ and $Z$ Boson Cross Section and $W$ Asymmetry at CMS. United States: N. p., 2011. Web.
Han, Jiyeon. $W$ and $Z$ Boson Cross Section and $W$ Asymmetry at CMS. United States.
Han, Jiyeon. Sat . "$W$ and $Z$ Boson Cross Section and $W$ Asymmetry at CMS". United States.
@article{osti_1027228,
title = {$W$ and $Z$ Boson Cross Section and $W$ Asymmetry at CMS},
author = {Han, Jiyeon},
abstractNote = {We report the measurement of the rates and asymmetries of inclusive and differential production of W and Z vector bosons in pp collisions at {radical}s = 7 TeV. The data consists of 36 pb{sup -1} collected in the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC). The measured inclusive cross sections are {sigma}(pp {yields} WX) x B(W {yields} {ell}{nu}) = 10.31 {+-} 0.02(stat.){+-}0.09 (syst.){+-}0.10(th.){+-}0.41(lumi.) nb and {sigma}(pp {yields} ZX) x B(Z {yields} {ell}{ell}) = 0.975 {+-} 0.007(stat.){+-}0.007 (syst.){+-}0.018(th.){+-}0.039(lumi.) nb. The measured inclusive cross sections and also its ratio of W to Z or W{sup +} to W{sup -} agree with NNLO QCD cross section calculations and current parton distribution functions (PDFs). The differential production asymmetry of W boson as a function of the lepton pseudorapidity in the final state is also measured and compared with various PDFs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {10}
}

Conference:
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