Prompt and non-prompt J/psi and psi(2S) suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment

doi:10.1140/epjc/s10052-018-6219-9

	Prompt and non-prompt J/psi and psi(2S) suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment
	ATLAS Collaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	2018
卷号	78 期号:9 页码:762
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-018-6219-9
文献子类	Article
英文摘要	A measurement of J/psi and psi(2S) production is presented. It is based on a data sample from Pb+Pb collisions at root s(NN) = 5.02 TeV and pp collisions at root s = 5.02 TeV recorded by the ATLAS detector at the LHC in 2015, corresponding to an integrated luminosity of 0.42 nb(-1) and 25 pb(-1) in Pb+Pb and pp, respectively. The measurements of per-event yields, nuclear modification factors, and non-prompt fractions are performed in the dimuon decay channel for 9 < p(T)(mu mu) < 40 GeV in dimuon transverse momentum, and -2 < y(mu mu) < 2 in rapidity. Strong suppression is found in Pb+Pb collisions for both prompt and non-prompt J/psi, increasing with event centrality. The suppression of prompt psi(2S) is observed to be stronger than that of J/psi, while the suppression of non-prompt psi(2S) is equal to that of the non-prompt J/psi within uncertainties, consistent with the expectation that both arise from b-quarks propagating through the medium. Despite prompt and non-prompt J/psi arising from different mechanisms, the dependence of their nuclear modification factors on centrality is found to be quite similar.
电子版国际标准刊号	1434-6052
WOS关键词	HEAVY-ION COLLISIONS ; PB-PB COLLISIONS ; QUARKONIUM PRODUCTION ; NUCLEAR COLLISIONS ; MONTE-CARLO ; LHC ; DISSOCIATION ; CHARMONIA ; RAPIDITY
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000445396900004
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286346]
专题	高能物理研究所_实验物理中心
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	ATLAS Collaboration. Prompt and non-prompt J/psi and psi(2S) suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(9):762.
APA	ATLAS Collaboration.(2018).Prompt and non-prompt J/psi and psi(2S) suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment.EUROPEAN PHYSICAL JOURNAL C,78(9),762.
MLA	ATLAS Collaboration."Prompt and non-prompt J/psi and psi(2S) suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment".EUROPEAN PHYSICAL JOURNAL C 78.9(2018):762.