Soft Open Charm Production in Heavy-Ion Collisions

TL;DR

This paper investigates how strong longitudinal color electric fields influence open charm production in heavy-ion collisions, predicting significant increases at high energies and consistent suppression patterns at moderate transverse momentum.

Contribution

It introduces a model incorporating in-medium effects on string tension, leading to enhanced charm production predictions at RHIC and LHC energies.

Findings

60-70% increase in charm cross sections at 200A GeV

Suppression at moderate transverse momentum consistent with RHIC data

Order of magnitude increase in charm production at LHC energies

Abstract

Effects of strong longitudinal color electric fields (SCF) on the open charm production in nucleus-nucleus (A + A) collisions at 200A GeV are investigated within the framework of the HIJING-BBbar v2.0 model. A three fold increase of the effective string tension due to in medium effects in A + A collisions, results in a sizeable (60-70 percents) enhancement of the total charm production cross sections. The nuclear modification factors show a suppression at moderate transverse momentum consistent with RHIC data. At Large Hadron Collider energies the model predicts an increase of total charm production cross sections by approximately an order of magnitude.