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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

Abstract

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 √S NN = 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 (p T) and next-to-leading order NRQCD at high p T. The nuclear modification factor in p+Au collisions for inclusive J/Ψ is below unity at low p T and consistent with unity at high p T, 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 < p T < 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 p T in central collisions and can be qualitatively described by transport models including dissociation and regeneration contributions.

Authors:
 [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). et al.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1408722
Report Number(s):
BNL-114477-2017-JA
Journal ID: ISSN 0375-9474; R&D Project: PO 004; PII: S037594741730091X
Grant/Contract Number:
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
Journal Volume: 967; Journal Issue: C; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider; heavy-ion collisions; quarkonium; J/Ψ suppression; color screening; cold nuclear matter effect

Citation Formats

Todoroki, Takahito. Measurements of charmonium production in p+p, p+Au, and Au+Au collisions at sNN=200 GeV with the STAR experiment. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysa.2017.04.020.
Todoroki, Takahito. Measurements of charmonium production in p+p, p+Au, and Au+Au collisions at sNN=200 GeV with the STAR experiment. United States. doi:10.1016/j.nuclphysa.2017.04.020.
Todoroki, Takahito. 2017. "Measurements of charmonium production in p+p, p+Au, and Au+Au collisions at sNN=200 GeV with the STAR experiment". United States. doi:10.1016/j.nuclphysa.2017.04.020. https://www.osti.gov/servlets/purl/1408722.
@article{osti_1408722,
title = {Measurements of charmonium production in p+p, p+Au, and Au+Au collisions at sNN=200 GeV with the STAR experiment},
author = {Todoroki, Takahito},
abstractNote = {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.},
doi = {10.1016/j.nuclphysa.2017.04.020},
journal = {Nuclear Physics. A},
number = C,
volume = 967,
place = {United States},
year = 2017,
month = 9
}

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