Jet Analysis in Heavy Ion Collisions in CMS

TL;DR

This paper discusses CMS experiment simulations for jet measurements in heavy ion collisions at the LHC, focusing on gamma-jet analysis to study energy loss in hot, dense quark-gluon plasma.

Contribution

It presents simulation results demonstrating CMS's capability to measure jets and gamma-jets in heavy ion collisions at 5.5 TeV, enabling detailed medium property studies.

Findings

CMS can effectively measure high-energy jets in heavy ion collisions.

Gamma-jet analysis can estimate jet energy loss due to medium interactions.

Simulations show potential for probing quark-gluon plasma properties.

Abstract

At the Relativistic Heavy Ion Collider, jets have been a useful tool to probe the properties of the hot, dense matter created. At the Large Hadron Collider, collisions of Pb+Pb at $\sqrt{s_{NN}}$ = 5.5 TeV will provide a large cross section of jets at high $E_T$ above the minimum bias heavy ion background. Simulations of the Compact Muon Solenoid (CMS) experiment's capability to measure jets in heavy ion collisions are presented. In particular, $\gamma$-jet measurements can estimate the amount of energy lost by a jet interacting strongly with the medium, since the tagged photon passes through unaffected.