CAS OpenIR  > 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)
2002
Source PublicationNUCLEAR PHYSICS A
ISSN0375-9474
Volume697Issue:40972Pages:825
AbstractDirect 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.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000173152500012
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/10032
Collection中科院上海原子核所2003年前
Recommended Citation
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.
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