J/ψ Production at High Transverse Momenta in P+p and Au + Au Collisions at √SNN=200 GeV
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Author(s)
Balewski, Jan T.
Betancourt, Michael Joseph
Corliss, Ross Cameron
Hays-Wehle, James Prewitt
Leight, William Axel
Steadman, Stephen G
van Nieuwenhuizen, Gerrit J
Date Issued
May 2013
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
Adamczyk, L., et al. “J/ψ Production at High Transverse Momenta in P+p and Au + Au Collisions at √SNN=200 GeV.” Physics Letters B, vol. 722, no. 1–3, May 2013, pp. 55–62. © 2018 Elsevier B.V.
Version
Final published version
Abstract
We report J/ψ spectra for transverse momenta p[subscript T]> 5GeV/c at mid-rapidity in p+p and Au+Au collisions at √sNN=200GeV. The inclusive J/ψ spectrum and the extracted B-hadron feed-down are compared to models incorporating different production mechanisms. We observe significant suppression of the J/ψ yields for p[subscript T] > 5GeV/c in 0-30% central Au+Au collisions relative to the p+p yield scaled by the number of binary nucleon-nucleon collisions in Au+Au collisions. In 30-60% mid-central collisions, no such suppression is observed. The level of suppression is consistently less than that of high-p[subscript T]π[superscript ±] and low-p[subscript T]J/ψ at RHIC and high-p[subscript T]J/ψ at the LHC. Keywords: J/ψ, suppression, Color-screening, Quarkonium, Heavy-ion collisions, STAR
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2013.04.010
