Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV

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	Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV
	CMS Collaboration
刊名	PHYSICS LETTERS B
	2014
卷号	730 页码:243-263
关键词	QUARK-GLUON PLASMA MOMENTUM DEPENDENCE TRANSVERSE-MOMENTUM COLLABORATION PERSPECTIVE SUPPRESSION DETECTOR MATTER
通讯作者	Chatrchyan, S (reprint author), CERN, CH-1211 Geneva 23, Switzerland.
英文摘要	The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of PbPb and pp collisions, corresponding to integrated luminosities of 150 mu b(-1) and 5.3 pb(-1) respectively, were collected at a nucleon-nucleon centre-of-mass energy of root s(NN) = 2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-k(T) algorithm with a distance parameter R = 0.3, and the jet shapes are measured for charged particles with transverse momentum P-T > 1 GeV/c. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions. (C) 2014 The Authors. Published by Elsevier B.V.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000333506400041
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213684]
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. Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV[J]. PHYSICS LETTERS B,2014,730:243-263.
APA	CMS Collaboration.(2014).Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV.PHYSICS LETTERS B,730,243-263.
MLA	CMS Collaboration."Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV".PHYSICS LETTERS B 730(2014):243-263.