Speaker
Description
Quarkonia are among the most important tools for studying Quantum Chromodynamics (QCD) in high energy hadronic collisions. Despite decades of extensive studies, we still have a limited knowledge of their production mechanism and hadronization; and carrying out as many measurements as possible in $p$+$p$ collisions over a broad kinematic region at different energies is essential to understand their production mechanisms. The PHENIX experiment has measured inclusive $J/\psi$ production as well as its angular decay coefficients at mid (|y|<0.35) and forward (1.2<|y|<2.2) rapidities in $p$+$p$ collisions at 200 GeV and 510 GeV. Recent results from these measurements will be presented.