Hadron Chemistry at High-PT with Identified Particles

TL;DR

This paper explores how high-momentum hadron ratios and elliptic flow are affected by flavor-changing processes in quark-gluon plasma, predicting differences from vacuum jet behavior.

Contribution

It introduces a model that includes elastic flavor-changing processes to explain hadron chemistry at high transverse momentum in nuclear collisions.

Findings

Kaons are less suppressed than pions in central collisions.

Flavor-changing processes influence elliptic flow.

Predictions differ from vacuum jet particle ratios.

Abstract

We discuss mechanisms that change the hadron chemistry for high momentum particles emitted in high energy nuclear collisions. We argue that particle ratios naturally tend to be different from jets in the vacuum. We show results of computations in a model that propagates leading particles through a quark gluon plasma and permits elastic flavor changing processes. We predict less suppression for kaons compared to pions in central collision. We also discuss elliptic flow resulting from flavor changing processes.