Nuclear modification factor of D-0 mesons in PbPb collisions at root s(NN)=5.02 TeV

doi:10.1016/j.physletb.2018.05.074

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	Nuclear modification factor of D-0 mesons in PbPb collisions at root s(NN)=5.02 TeV
	CMS Collaboration
刊名	PHYSICS LETTERS B
	2018
卷号	782 页码:474-496
关键词	Physics Suppression Quark gluon plasma Shadowing D-meson Open heavy-flavour
ISSN号	0370-2693
DOI	10.1016/j.physletb.2018.05.074
文献子类	Article
英文摘要	The transverse momentum (p(T)) spectrum of prompt D-0 mesons and their antiparticles has been measured via the hadronic decay channels D-0 -> K- pi(+) and (D) over bar (0) -> K+ pi(-) in pp and PbPb collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair with the CMS detector at the LHC. The measurement is performed in the D-0 meson p(T) range of 2-100GeV/c and in the rapidity range of vertical bar y vertical bar < 1. The pp (PbPb) dataset used for this analysis corresponds to an integrated luminosity of 27.4 pb(-1) (530 mu b(-1)). The measured D-0 meson p(T) spectrum in pp collisions is well described by perturbative QCD calculations. The nuclear modification factor, comparing D-0 meson yields in PbPb and pp collisions, was extracted for both minimum-bias and the 10% most central PbPb interactions. For central events, the D-0 meson yield in the PbPb collisions is suppressed by a factor of 5-6 compared to the pp reference in the p(T) range of 6-10GeV/c. For D-0 mesons in the high-p(T) range of 60-100GeV/c, a significantly smaller suppression is observed. The results are also compared to theoretical calculations. (C) 2018 The Author(s). Published by Elsevier B.V.
电子版国际标准刊号	1873-2445
WOS关键词	QUARKS
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000438486900073
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286123]
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. Nuclear modification factor of D-0 mesons in PbPb collisions at root s(NN)=5.02 TeV[J]. PHYSICS LETTERS B,2018,782:474-496.
APA	CMS Collaboration.(2018).Nuclear modification factor of D-0 mesons in PbPb collisions at root s(NN)=5.02 TeV.PHYSICS LETTERS B,782,474-496.
MLA	CMS Collaboration."Nuclear modification factor of D-0 mesons in PbPb collisions at root s(NN)=5.02 TeV".PHYSICS LETTERS B 782(2018):474-496.