J/psi production and correlation in p+p and Au+Au collisions at STAR
Zebo Tang (for the STAR Collaboration)
TL;DR
This paper reports on J/psi production and correlation measurements in proton-proton and gold-gold collisions at STAR, revealing no suppression in peripheral collisions and significant suppression in central collisions, with no observed elliptic flow at high transverse momentum.
Contribution
It provides new measurements of J/psi spectra, nuclear modification factors, and elliptic flow in high-energy collisions, enhancing understanding of quark-gluon plasma effects.
Findings
No suppression of high-pT J/psi in peripheral Au+Au collisions
Significant suppression of J/psi in central Au+Au collisions
No elliptic flow observed for J/psi at pT < 10 GeV/c
Abstract
The results on J/psi pT spectra in 200 GeV p+p and Au+Au collisions at STAR with pT in the range of 3-10 GeV/c are presented. Nuclear modification factor of high-pT J/psi is found to be consistent with no suppression in peripheral Au+Au collisions and significantly smaller than unity in central Au+Au collisions. The J/psi elliptic flow is measured to be consistent with no flow at pT < 10 GeV/c in 20-60% Au+Au collisions.
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