J/ψ Production at High Transverse Momenta in P+p and Au + Au Collisions at √SNN=200 GeV
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; ... Show more Show less
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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
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Physics Letters B
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.
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