J/psi productions in nucleus-nucleus collisions at RHIC and LHC energies

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海原子核所2003年前

	J/psi productions in nucleus-nucleus collisions at RHIC and LHC energies
	Xu, XM（许晓明）
刊名	NUCLEAR PHYSICS A
	2002
卷号	697 期号:40972 页码:825
ISSN号	0375-9474
英文摘要	Direct charmonium productions and prompt J/psi productions are studied for the central Au-Au collisions at RHIC and LHC energies, where the equilibrating partonic system is succeeded with hadronic matter in chemical nonequilibrium. Charmonium dissociation cross sections by mesons in the pseudoscalar octet and vector nonet are calculated with a QCD-based potential developed from the Buchmiffier-Tye potential. A prescription for adopting c (c) over bar radius dependence of c-(c) over bar relative-motion wave functions provides c (c) over bar dissociation cross sections by a gluon and mesons as functions of the radius. Deconfinement enhancement originating from the partonic system appears obviously in the prompt J/psi number distributions and direct charmonium. number distributions in the rapidity region -1.5 < y < 1.5 at p(T) = 4 GeV but the direct psi' at LHC energy. Such deconfinement enhancement is also found in the ratios of prompt J/psi and direct charmonium number distributions to the initially yielded number distributions for Au-Au collisions or to nucleon-nucleon collisions at the RHIC energy. Twists in the prompt J/psi and direct charmonium number distributions and the ratios in -1.5 < y < 1. 5 show the existence of partonic system at the LHC energy. (C) 2002 Elsevier Science B.V. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000173152500012
公开日期	2012-09-25
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/10032]
专题	上海应用物理研究所_中科院上海原子核所2003年前
推荐引用方式 GB/T 7714	Xu, XM. J/psi productions in nucleus-nucleus collisions at RHIC and LHC energies[J]. NUCLEAR PHYSICS A,2002,697(40972):825.
APA	Xu, XM.(2002).J/psi productions in nucleus-nucleus collisions at RHIC and LHC energies.NUCLEAR PHYSICS A,697(40972),825.
MLA	Xu, XM."J/psi productions in nucleus-nucleus collisions at RHIC and LHC energies".NUCLEAR PHYSICS A 697.40972(2002):825.