Sequential Coalescence with Charm Conservation in High Energy Nuclear Collisions

TL;DR

This paper introduces a sequential coalescence model incorporating charm conservation to study charmed hadron production in high energy nuclear collisions, revealing how charm conservation influences hadron yields and offers a new approach to understanding quark-gluon plasma hadronization.

Contribution

The paper develops a novel sequential coalescence model with charm conservation, providing new insights into charmed hadron production at RHIC and LHC energies.

Findings

Charm conservation enhances early formed hadrons like D_s and suppresses later formed ones like Λ_c.

The model explains the observed D_s/D^0 enhancement and Λ_c/D^0 suppression.

Mass dependence in hadron formation offers a new tool for studying quark-gluon plasma hadronization.

Abstract

Heavy quarks are initially produced in nuclear collisions and the number is conserved during the evolution of the system. We establish a sequential coalescence model with charm conservation and apply it to charmed hadron production at RHIC and LHC energies. The charm conservation enhances the earlier formed hadrons and reduces the later formed ones, which leads to a $D_s/D^0$ enhancement and a $\Lambda_c/D^0$ suppression. The mass dependence of the sequential hadron formation provides us a new tool for studying the quark-gluon plasma hadronization in high energy nuclear collisions.