Charged jet reconstruction in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV at RHIC

TL;DR

This paper develops novel methods for reconstructing charged jets in central Au+Au collisions at 200 GeV, addressing background challenges to enable accurate measurements of jet properties in dense nuclear matter.

Contribution

It introduces new data-driven techniques for inclusive and semi-inclusive charged jet measurements in high-background heavy-ion collisions.

Findings

Successful reconstruction of charged jets in high-background conditions

First measurements of semi-inclusive recoiling jet distributions at RHIC

Enhanced understanding of jet quenching effects in dense nuclear matter

Abstract

Jets represent an important tool to explore the properties of the hot and dense nuclear matter created in heavy-ion collisions. However, full jet reconstruction in such events is a challenging task due to extremely large and fluctuating background, which generates a large population of combinatorial jets that overwhelm the true hard jet population. In order to carry out accurate, data-driven jet measurements over a broad kinematic range in such conditions of small signal to background, we use several novel approaches in order to measure inclusive charged jet distributions and semi-inclusive charged jet distributions recoiling from a high pT hadron trigger in central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV.