Quarkonia production in the STAR experiment

TL;DR

This paper reports recent STAR experiment results on quarkonia production, including spectra, nuclear modification factors, polarization, and elliptic flow in various collision systems at 200 GeV.

Contribution

It provides new measurements of $J/$ and $$ production, polarization, and flow, enhancing understanding of quark-gluon plasma effects on quarkonia.

Findings

$J/$ $p_{T}$ spectra in $p+p$ and Au+Au collisions

Nuclear modification factors ($R_{AA}$) for $J/$ and $$

$J/$ polarization and $v_{2}$ results

Abstract

In this proceedings the recent STAR results of $J/\psi$ and $\Upsilon$ production in $p+p$, $d$+Au and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV at mid-rapidity are reported. $J/\psi$ $p_{T}$ spectra in $p+p$ and Au+Au collisions for both low and high $p_{T}$ are shown. $J/\psi$ nuclear modification factor ($R_{AA}$) in $d$+Au and Au+Au collisions and $\Upsilon$ $R_{AA}$ in Au+Au collisions are reported. Also, $J/\psi$ polarization in $p+p$ collisions and $J/\psi$ $v_{2}$ for semi-central Au+Au collisions are presented.