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Identification of b-quark jets with the CMS experiment
CMS Collaboration
2013
发表期刊JOURNAL OF INSTRUMENTATION
卷号8
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要At the Large Hadron Collider, the identification of jets originating from b quarks is important for searches for new physics and for measurements of standard model processes. A variety of algorithms has been developed by CMS to select b-quark jets based on variables such as the impact parameters of charged-particle tracks, the properties of reconstructed decay vertices, and the presence or absence of a lepton, or combinations thereof. The performance of these algorithms has been measured using data from proton-proton collisions at the LHC and compared with expectations based on simulation. The data used in this study were recorded in 2011 at root s = 7TeV for a total integrated luminosity of 5.0 fb(-1). The efficiency for tagging b-quark jets has been measured in events from multijet and t-quark pair production. CMS has achieved a b-jet tagging efficiency of 85% for a light-parton misidentification probability of 10% in multijet events. For analyses requiring higher purity, a misidentification probability of only 1.5% has been achieved, for a 70% b-jet tagging efficiency.
学科领域Instruments & Instrumentation
DOI10.1088/1748-0221/8/04/P04013
收录类别SCI
语种英语
WOS类目Instruments & Instrumentation
WOS记录号WOS:000317462400020
引用统计
被引频次:294[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213508
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. Identification of b-quark jets with the CMS experiment[J]. JOURNAL OF INSTRUMENTATION,2013,8.
APA CMS Collaboration.(2013).Identification of b-quark jets with the CMS experiment.JOURNAL OF INSTRUMENTATION,8.
MLA CMS Collaboration."Identification of b-quark jets with the CMS experiment".JOURNAL OF INSTRUMENTATION 8(2013).
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