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Measurement of the t(t)over-bar production cross section and the top quark mass in the dilepton channel in pp collisions at root s=7 Tev
CMS Collaboration
2011
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号7
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要The t (t) over bar production cross section and top quark mass are measured in proton-proton collisions at root s = 7 TeV in a data sample corresponding to an integrated luminosity of 36 pb(-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(tt) - 168 +/- 18 (stat:) +/- 14 (syst:) +/- 7 (lumi:) pb, consistent with predictions from the standard model. The top quark mass m(top) is reconstructed with two different methods, a full kinematic analysis and a matrix weighting technique. The combination yields a measurement of m(top) = 175.5 +/- 4.6 (stat:) +/- 4: 6 (syst:) GeV/c(2).
关键词COLLIDER DETECTOR EVENTS FERMILAB DECAY
学科领域Physics
DOI10.1007/JHEP07(2011)049
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000293741400049
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213093
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Measurement of the t(t)over-bar production cross section and the top quark mass in the dilepton channel in pp collisions at root s=7 Tev[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(7).
APA CMS Collaboration.(2011).Measurement of the t(t)over-bar production cross section and the top quark mass in the dilepton channel in pp collisions at root s=7 Tev.JOURNAL OF HIGH ENERGY PHYSICS(7).
MLA CMS Collaboration."Measurement of the t(t)over-bar production cross section and the top quark mass in the dilepton channel in pp collisions at root s=7 Tev".JOURNAL OF HIGH ENERGY PHYSICS .7(2011).
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