Jet-Medium Interactions with Identified Particles

TL;DR

This paper reviews recent findings on how identified particles reveal the nature of jet-medium interactions, energy loss, and hadronization processes in heavy ion collisions, emphasizing the importance of particle type in medium modifications.

Contribution

It provides a comprehensive review of recent experimental results involving identified particles in heavy ion and p+p collisions, highlighting their role in understanding jet quenching and hadronization.

Findings

Identified particle spectra help distinguish medium effects on jet fragmentation.

Two-particle correlations with identified particles reveal parton-dependent energy loss.

Results support quark coalescence as a hadronization mechanism at intermediate $p_T$.

Abstract

Identified particles have long been of great interest at RHIC in large part because of the baryon/meson differences observed at intermediate $p_T$ and the implications for hadronization via quark coalescence. With recent high statistics data identified particles are also now central to understanding the details of the jet-medium interactions and energy loss and hadron formation at intermediate and high $p_T$. In particular, high $p_T$ identified particle spectra along with two-particle correlations triggered with direct photons, neutral pions or electrons from heavy flavor decay with hadrons can provide information about how medium modifications to jet fragmentation depend on parton type. I will review recent results with identified particles both in heavy ion systems and the reference measurements in p+p collisions.