# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## Inclusive and Semi-Inclusive Jet measurements in Au+Au collisions at $\sqrt(s_{NN})$ = 200 GeV at STAR

Jul 23, 2015, 2:30 PM
20m
HS42

### HS42

talk Heavy Ion Physics

### Speaker

Jan Rusnak (Nuclear Physics Institute Prague)

### Description

Jets represent an important tool to explore the properties of the hot and dense nuclear matter created in heavy-ion collisions. However, their reconstruction presents a challenging task due to the extremely large and fluctuating background that overwhelm the true hard jet population. We present recent measurements of charged jets in Au+Au collisions, by the STAR collaboration at RHIC, where the background is suppressed via a new technique based on event mixing and via a cut on leading hadron transverse momentum. The measured observables are the inclusive jet yield and the semi-inclusive yield of recoil jets from a high pT hadron trigger. These jet measurements allow a direct comparison of jet quenching at RHIC and the LHC and provide new constraints on theoretical calculations of jet quenching.