PHENIX measurement of jet properties and their modification in heavy-ion collisions

TL;DR

This paper investigates how jet properties are modified in heavy-ion collisions at 200 GeV using two-particle correlations, revealing insights into jet quenching and medium effects.

Contribution

It introduces a method to extract jet parameters from angular correlations in different collision systems, advancing understanding of jet modification in quark-gluon plasma.

Findings

Jet width broadening observed in Au+Au collisions.

Suppression of away-side jet yield in heavy-ion collisions.

Comparison of jet properties across p+p, d+Au, and Au+Au.

Abstract

The properties of jets produced in p+p, d+Au and Au+Au collisions at sqrt{s_NN}=200 GeV are studied using the method of two particle correlations. The trigger particle is assumed to be a leading particle from a high p_T jet while the associated particle is assumed to come from either the same jet or the away jet. From the angular width and yield of the same and away side correlation peaks, the parameters characterizing the jet properties are extracted.