Evidence of b-Jet Quenching in PbPb Collisions at root S-NN=2.76 TeV

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	Evidence of b-Jet Quenching in PbPb Collisions at root S-NN=2.76 TeV
	CMS Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2014
卷号	113 期号:13
关键词	QUARK-GLUON PLASMA ROOT-S(NN)=2.76 TEV ENERGY-LOSS MOMENTUM DEPENDENCE TRANSVERSE-MOMENTUM MATTER COLLABORATION PERSPECTIVE TOMOGRAPHY DETECTOR
通讯作者	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	The production of jets associated to bottom quarks is measured for the first time in PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon pair. Jet spectra are reported in the transverse momentum (p(T)) range of 80-250 GeV/c, and within pseudorapidity vertical bar eta vertical bar < 2. The nuclear modification factor ( R-AA) calculated from these spectra shows a strong suppression in the b-jet yield in PbPb collisions relative to the yield observed in pp collisions at the same energy. The suppression persists to the largest values of pT studied, and is centrality dependent. The R-AA is about 0.4 in the most central events, similar to previous observations for inclusive jets. This implies that jet quenching does not have a strong dependence on parton mass and flavor in the jet p(T) range studied.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000344051400002
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213807]
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. Evidence of b-Jet Quenching in PbPb Collisions at root S-NN=2.76 TeV[J]. PHYSICAL REVIEW LETTERS,2014,113(13).
APA	CMS Collaboration.(2014).Evidence of b-Jet Quenching in PbPb Collisions at root S-NN=2.76 TeV.PHYSICAL REVIEW LETTERS,113(13).
MLA	CMS Collaboration."Evidence of b-Jet Quenching in PbPb Collisions at root S-NN=2.76 TeV".PHYSICAL REVIEW LETTERS 113.13(2014).