Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at root s(NN)=5.02 TeV

doi:10.1016/j.physletb.2019.135043

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	Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at root s(NN)=5.02 TeV
	Acharya, S ; Adamova, D ; Adhya, SP ; Adler, A ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z
刊名	PHYSICS LETTERS B
	2020
卷号	800 页码:-
关键词	PHYSICS PERFORMANCE REPORT TRANSVERSE-MOMENTUM ANGULAR-CORRELATIONS LONG-RANGE HADRONS NUCLEI PROTON ALICE HE-4 KAON
ISSN号	0370-2693
DOI	10.1016/j.physletb.2019.135043
文献子类	期刊论文
英文摘要	The measurement of the deuteron and anti-deuteron production in the rapidity range -1 < y < 0 as a function of transverse momentum and event multiplicity in p-Pb collisions at root s(NN) = 5.02 TeV is presented. (Anti-)deuterons are identified via their specific energy loss dE/dx and via their time-of-flight. Their production in p-Pb collisions is compared to pp and Pb-Pb collisions and is discussed within the context of thermal and coalescence models. The ratio of integrated yields of deuterons to protons (d/p) shows a significant increase as a function of the charged-particle multiplicity of the event starting from values similar to those observed in pp collisions at low multiplicities and approaching those observed in Pb-Pb collisions at high multiplicities. The mean transverse particle momenta are extracted from the deuteron spectra and the values are similar to those obtained for p and Lambda particles. Thus, deuteron spectra do not follow mass ordering. This behaviour is in contrast to the trend observed for non-composite particles in p-Pb collisions. In addition, the production of the rare He-3 and (3)(He) over bar nuclei has been studied. The spectrum corresponding to all non-single diffractive p-Pb collisions is obtained in the rapidity window -1 < y < 0 and the p(T)-integrated yield dN/dy is extracted. It is found that the yields of protons, deuterons, and He-3, normalised by the spin degeneracy factor, follow an exponential decrease with mass number. (C) 2019 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/331007/33022]
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.Univ Witwatersrand, Johannesburg, South Africa 2.Yerevan Phys Inst Fdn, AI AlikhanyanNatl Sci Lab, Yerevan, Armenia 3.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine 4.Bose Inst, Dept Phys, Kolkata, India 5.CAPSS, Kolkata, India 6.Budker Inst Nucl Phys, Novosibirsk, Russia 7.Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA 8.Cent China Normal Univ, Wuhan, Hubei, Peoples R China 9.IN2P3, Ctr Calcul, Lyon, France 10.Ctr Aplicac Tecnol Gicas & Desarrollo Nucl CEADEN, Havana, Cuba
推荐引用方式 GB/T 7714	Acharya, S,Adamova, D,Adhya, SP,et al. Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at root s(NN)=5.02 TeV[J]. PHYSICS LETTERS B,2020,800:-.
APA	Acharya, S.,Adamova, D.,Adhya, SP.,Adler, A.,Adolfsson, J.,...&Zurlo, N.(2020).Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at root s(NN)=5.02 TeV.PHYSICS LETTERS B,800,-.
MLA	Acharya, S,et al."Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at root s(NN)=5.02 TeV".PHYSICS LETTERS B 800(2020):-.