STAR results on medium properties and response of the medium to energetic partons

TL;DR

This paper presents STAR experiment results on how energetic partons interact with the quark-gluon plasma, revealing effects like color factor dependence, path length influence, and medium response phenomena such as conical emission and ridge formation.

Contribution

It provides new experimental insights into parton energy loss mechanisms and medium response in heavy ion collisions, highlighting color and system size effects.

Findings

Color factor effects influence parton energy loss.

Path length dependence affects di-hadron fragmentation.

Medium response includes conical emission and ridge phenomena.

Abstract

We report new STAR results on the consequences of highly energetic partons propagating through the medium formed in heavy ion collisions using correlations as an experimental probe. The recent results providing insights about color factor effects and path length dependence of parton energy loss, system size dependence of di-hadron fragmentation functions, conical emission and ridge formation in heavy ion collisions are presented.