Measurement of elliptic flow of J/ψ in √s__NN=200 GeV Au+Au collisions at forward rapidity

2024/09/19 by PHENIX Collaboration, U. Acharya, Abdulameer, N. J. +438
Mathematics · Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Markov Chains and Monte Carlo Methods #Nuclear Experiment (nucl-ex) #Stochastic processes and statistical mechanics

paper · pdf · doi:10.48550/arxiv.2409.12756

openalex publication_date 2024/09/19 · openalex created_date 2024/10/10 · openalex updated_date 2026/07/28

Abstract

We report the first measurement of the azimuthal anisotropy of J/ψ at forward rapidity (1.2<|η|<2.2) in Au+Au collisions at √s__NN=200 GeV at the Relativistic Heavy Ion Collider. The data were collected by the PHENIX experiment in 2014 and 2016 with integrated luminosity of 14.5~nb^-1. The second Fourier coefficient (v₂) of the azimuthal distribution of J/ψ is determined as a function of the transverse momentum (p_T) using the event-plane method. The measurements were performed for several selections of collision centrality: 0%--50%, 10%--60%, and 10%-40%. We find that in all cases the values of v₂(p_T), which quantify the elliptic flow of J/ψ, are consistent with zero. The results are consistent with measurements at midrapidity, indicating no significant elliptic flow of the J/ψ within the quark-gluon-plasma medium at collision energies of √s__NN=200 GeV.

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