$\pi$-$J/\psi$ Correlation and Elliptic Flow Parameter $v_2$ of Charmed Mesons at RHIC Energy

TL;DR

This paper investigates the correlation between pions and J/psi mesons, and calculates the elliptic flow parameter v2 of charmed mesons at RHIC energies, providing insights into the quark-gluon plasma properties.

Contribution

It introduces a recombination model considering azimuthal anisotropy to analyze charmed meson flow and correlations at RHIC energies, which is a novel approach.

Findings

Correlation patterns between trigger pions and J/psi observed.

Elliptic flow parameter v2 of charmed mesons calculated for different centralities.

Results suggest significant medium effects on charmed meson production.

Abstract

We study the correlation between the trigger $\pi$ and the associated $J/\psi$ on near and away sides in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV. In the region of trigger momentum $p_t>4$ GeV/$c$, the $\pi$ spectrum is composed of thermal-shower and shower-shower recombinations in the frame work of the recombination model. We consider the azimuthal anisotropy in the quenched hard parton distribution and then calculate the elliptic flow parameter $v_2$ of charmed mesons ($J/\psi$, $D^0$ and $D_s$) for different centralities.