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Title: Measurements of charmonium production in p+p, p+Au, and Au+Au collisions at s NN = 200  GeV with the STAR experiment

Journal Article · · Nuclear Physics. A
 [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). et al.
+ Show Author Affiliations

Here, we present the first results from the STAR MTD of mid-rapidity charmonium measurements via the di-muon decay channel in p+p, p+Au, and Au+Au collisions at √SNN = 200 GeV at RHIC. The inclusive J/Ψ production cross section in p+p collisions can be described by the Non-Relativistic QCD (NRQCD) formalism coupled with the color glass condensate e ective theory (CGC) at low transverse momentum (pT) and next-to-leading order NRQCD at high pT. The nuclear modification factor in p+Au collisions for inclusive J/Ψ is below unity at low pT and consistent with unity at high pT, which can be described by calculations including both nuclear PDF and nuclear absorption e ects. The double ratio of inclusive J/Ψ and Ψ(2S) production rates for 0 < pT < 10 GeV/c at mid-rapidity between p+p and p+Au collisions is measured to be 1.37 0.42 0.19. The nuclear modification factor in Au+Au collisions for inclusive J/Ψ shows significant J/Ψ suppression at high pT in central collisions and can be qualitatively described by transport models including dissociation and regeneration contributions.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
STAR Collaboration
Grant/Contract Number:
SC0012704
OSTI ID:
1408722
Report Number(s):
BNL-114477-2017-JA; R&D Project: PO 004; PII: S037594741730091X
Journal Information:
Nuclear Physics. A, Vol. 967, Issue C; ISSN 0375-9474
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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