On jet structure in heavy ion collisions
I.P. Lokhtin, A.A. Alkin, A.M. Snigirev
TL;DR
This paper analyzes LHC PbPb collision data on jet structures, comparing it with PYQUEN model simulations to understand the effects of partonic energy loss mechanisms on jet modifications in heavy ion collisions.
Contribution
It provides a detailed interpretation of jet shape modifications in PbPb collisions using the PYQUEN jet quenching model, highlighting the roles of radiative and collisional energy loss.
Findings
Jet shape modifications in central PbPb collisions match PYQUEN predictions.
Both radiative and collisional energy losses significantly affect intra-jet structure.
Quantitative estimates of energy loss contributions are provided.
Abstract
The LHC data on jet fragmentation function and jet shapes in PbPb collisions at center-of-mass energy 2.76 TeV per nucleon pair are analyzed and interpreted in the frameworks of PYQUEN jet quenching model. A specific modification of longitudinal and radial jet profiles in most central PbPb collisions as compared with pp data is close to that obtained with PYQUEN simulations taking into account wide-angle radiative and collisional partonic energy loss. The contribution of radiative and collisional loss to the medium-modified intra-jet structure is estimated.
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