Coherence and broadening effects in medium induced gluon radiation
Abstract
Interferences between different emitters in the multi-parton shower is the building block of QCD jet physics in vacuum. The presence of a hot medium made of quarks and gluons is expected to alter this interference pattern. To study such effects, we derive the gluon emission spectrum off an "asymptotic quark" traversing a hot and dense QCD medium at first order in the medium density. The resulting induced gluon distribution gets modified when the new interference terms between the initial and final quark are included. We comment on the possible phenomenological consequences of this new contribution for jet observables in heavy-ion collisions.
Cite
@article{arxiv.1209.2288,
title = {Coherence and broadening effects in medium induced gluon radiation},
author = {Néstor Armesto and Hao Ma and Mauricio Martinez and Yacine Mehtar-Tani and Carlos A. Salgado},
journal= {arXiv preprint arXiv:1209.2288},
year = {2012}
}
Comments
4 pages. To appear in the Proceedings of the conference Hard Probes 2012 - Sardinia - Italy - May 27 -June 1 2012