Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe-Xe collisions at root s(NN)=5.44 TeV

doi:10.1016/j.physletb.2018.12.048

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe-Xe collisions at root s(NN)=5.44 TeV
	Acharya, S ; Torales-Acosta, F ; Adamova, D ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z ; Ahn, SU
刊名	PHYSICS LETTERS B
	2019
卷号	790 期号:-页码:35—48
关键词	PB-PB COLLISIONS PROTON-PROTON COLLISIONS AU COLLISIONS QCD PA PP
ISSN号	0370-2693
DOI	10.1016/j.physletb.2018.12.048
文献子类	期刊论文
英文摘要	In this Letter, the ALICE Collaboration presents the first measurements of the charged-particle multiplicity density, dN(ch)/d eta, and total charged-particle multiplicity, N-ch(tot), in Xe-Xe collisions at a centre-of-mass energy per nucleon-nucleon pair of root s(NN) = 5.44 TeV. The measurements are performed as a function of collision centrality over a wide pseudorapidity range of -3.5 < eta < 5. The values of dN(ch)/d eta at mid-rapidity and N-ch(tot) for central collisions, normalised to the number of nucleons participating in the collision (N-part) as a function of root s(NN) follow the trends established in previous heavy-ion measurements. The same quantities are also found to increase as a function of N-part, and up to the 5% most central collisions the trends are the same as the ones observed in Pb-Pb at a similar energy. For more central collisions, the Xe-Xe scaled multiplicities exceed those in Pb-Pb for a similar N-part. The results are compared to phenomenological models and theoretical calculations based on different mechanisms for particle production in nuclear collisions. All considered models describe the data reasonably well within 15%. (C) 2018 Published by Elsevier B.V.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31500]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Cent China Normal Univ, Wuhan, Hubei, Peoples R China; 2.Yerevan Phys Inst Fdn, Alikhanyan Natl Sci Lab, Yerevan, Armenia; 3.Benemerita Univ Autonoma Puebla, Puebla, Mexico; 4.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine; 5.Bose Inst, Dept Phys, Kolkata, India; 6.Bose Inst, Ctr Astroparticle Phys & Space Sci, Kolkata, India; 7.Budker Inst Nucl Phys, Novosibirsk, Russia; 8.Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA USA; 9.IN2P3, Ctr Calcul, Lyon, France; 10.Ctr Aplicac Tecnolog & Desarrollo Nucl CEADEN, Havana, Cuba;
推荐引用方式 GB/T 7714	Acharya, S,Torales-Acosta, F,Adamova, D,et al. Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe-Xe collisions at root s(NN)=5.44 TeV[J]. PHYSICS LETTERS B,2019,790(-):35—48.
APA	Acharya, S.,Torales-Acosta, F.,Adamova, D.,Adolfsson, J.,Aggarwal, MM.,...&Zou, S.(2019).Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe-Xe collisions at root s(NN)=5.44 TeV.PHYSICS LETTERS B,790(-),35—48.
MLA	Acharya, S,et al."Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe-Xe collisions at root s(NN)=5.44 TeV".PHYSICS LETTERS B 790.-(2019):35—48.