Measurement of the inclusive W and Z production cross sections in pp collisions at root s = 7 TeV with the CMS experiment

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	Measurement of the inclusive W and Z production cross sections in pp collisions at root s = 7 TeV with the CMS experiment
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2011
期号	10 页码:-
关键词	YAN K-FACTOR PARTON DISTRIBUTIONS ENERGIES PAIR LHC QCD
通讯作者	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	A measurement of inclusive W and Z production cross sections in pp collisions at root s = 7 TeV is presented. The electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb(-1). The measured inclusive cross sections are sigma(pp -> WX) x B(W -> lv) = 10.31 +/- 0.02 (stat.) +/- 0.09 (syst.) +/- 0.10 (th.) +/- 0.41 (lumi.) nb and sigma(pp -> ZX) x B(Z -> l(broken vertical bar) l(-)) = 0.974 +/- 0.007 (stat.) +/- 0.007 (syst.) +/- 0.018 (th.) +/- 0.039 (lumi.) nb, limited to the dilepton invariant mass range 60 to 120 GeV. The luminosity-independent cross section ratios are (sigma(pp -> WX) x B(W -> lv)) / (sigma(pp -> ZX) x B(Z -> l(+)l(-))) = 10.54 +/- 0.07 (stat.) +/- 0.08 (syst.) +/- 0.16 (th.) and (sigma(pp -> W+ X) x B(W+ -> l(+) v)) / (sigma(pp -> W- X) x B(W- -> l(-) (v) over bar)) = 1.421 +/- 0.006 (stat.) +/- 0.014 (syst.) +/- 0.029 (th.). The measured values agree with next-to-next-to-leading order QCD cross section calculations based on recent parton distribution functions.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000296917300056
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213132]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	CMS Collaboration. Measurement of the inclusive W and Z production cross sections in pp collisions at root s = 7 TeV with the CMS experiment[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(10):-.
APA	CMS Collaboration.(2011).Measurement of the inclusive W and Z production cross sections in pp collisions at root s = 7 TeV with the CMS experiment.JOURNAL OF HIGH ENERGY PHYSICS(10),-.
MLA	CMS Collaboration."Measurement of the inclusive W and Z production cross sections in pp collisions at root s = 7 TeV with the CMS experiment".JOURNAL OF HIGH ENERGY PHYSICS .10(2011):-.