Charmed hadron production via equal-velocity quark combination in ultra-relativistic heavy ion collisions

TL;DR

This paper models charmed hadron production in ultra-relativistic heavy ion collisions using equal-velocity quark combination, providing analytic expressions, numerical results, and predictions that align with experimental data.

Contribution

It introduces a novel equal-velocity quark combination model for charmed hadron production, offering analytic formulas and predictions for yield ratios in heavy ion collisions.

Findings

Model reproduces observed yield ratios $D_s^+/D^0$, $ ext{Lambda}_c^+/D^0$

Provides analytic expressions for momentum dependence

Makes predictions for unmeasured charmed hadrons

Abstract

Recent data on the production of $D$ mesons and $\Lambda_c^+$ baryons in heavy ion collisions at the Relativistic Heavy Ion Collider and the Large Hadron Collider exhibit a number of striking characteristics such as enhanced yield ratios $D_s^+/D^0$, $\Lambda_c^+/D^0$ and their transverse momentum dependences. In this paper, we derive the momentum dependence of open charm mesons and singly charmed baryons produced in ultra-relativistic heavy ion collisions via the equal-velocity quark combination. We present analytic expressions and numerical results of yield ratios and compare them with the experimental data available. We make predictions for other charmed hadrons.