NLO analysis of inclusive jet, tagged jet and di-jet production in Pb+Pb collisions at the LHC

TL;DR

This paper provides next-to-leading order predictions for jet production in Pb+Pb collisions at the LHC, analyzing suppression patterns, di-jet asymmetry, and medium effects on jets and particles, with comparisons to recent experimental data.

Contribution

It offers a comprehensive NLO analysis of jet suppression, di-jet asymmetry, and tagged jets in heavy-ion collisions, connecting theoretical predictions with experimental observations.

Findings

Predicted transition from enhancement to suppression of Z^0+jets.

Quantified suppression of inclusive and tagged jets.

Clarified the relation between jet quenching and charged hadron attenuation.

Abstract

We present results and predictions at next-to-leading order for the recent LHC lead-lead run at a center-of-mass energy of 2.76 TeV per nucleon-nucleon pair. Specifically, we focus on the suppression the single and double inclusive jet cross sections and demonstrate how the di-jet asymmetry, recently measured by ATLAS and CMS, can be extracted from this general result. The case of jets tagged by an electroweak boson is exemplified by the $Z^0$+jet channel. We predict a signature transition from enhancement to suppression of the tagged jet related to the medium-induced modification of the parton shower. Finally, we clarify the relation between the suppression of inclusive jets, tagged jets and di-jets and the quenching of inclusive particles on the example of the recent ALICE charged hadron attenuation data.