Excitation function Analysis for Charmonium Production in Heavy-Ion Collisions

TL;DR

This paper investigates how the interplay of color screening and regeneration influences charmonium production in heavy-ion collisions, using excitation analysis to probe the properties of the quark-gluon plasma.

Contribution

It introduces an excitation analysis based on a transport approach to explore the competition between medium effects on charmonium yield and transverse momentum.

Findings

The ratio of averaged transverse momentum squared is sensitive to medium effects.

Transport model effectively captures the excitation patterns of charmonium.

Results help distinguish between different QCD medium properties.

Abstract

Both color screening and regeneration are hot medium effects on charmonium production in heavy ion collisions. While they affect in an opposite way the charmonium yield, their competition in transverse dynamics bring sensitivity to the ratio of averaged transverse momentum suqare for charmonium, which thus can reveal more nature of the QCD medium created from the collisions. We make an excitation analysis based on transport approach to illustrate such a picuture.