Implementation of a medium-modified parton shower algorithm

Abstract

We present a Monte Carlo implementation of medium-induced gluon radiation in the final-state branching process. Medium effects are introduced through an additive term in the splitting functions. We have implemented such modification within PYTHIA. We show the medium effects on the hump-backed plateau, and the transverse momentum and angular distributions with respect to the parent parton. As expected, with increasing medium densities there is an increase (decrease) of partons with small (large) momentum fraction, and angular broadening is observed. The effects on the transverse-momentum distributions are more involved, with an enhancement of low- and intermediate-$p_T$ partons and a decrease at large $p_T$, which is related to energy conservation, and to the lack of momentum exchange with the medium in our approach.

LaTeX, 6 pages, 2 eps figures; proceedings of the 3rd International Conference on Hard and Electromagnetic Probes in High-Energy Nuclear Collisions - Hard Probes 2008 (Illa de A Toxa, Spain, June 8th-14th 2008)

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Cited by in corpus (11)

• Jet physics in heavy-ion collisions
• Jet quenching pattern at LHC in PYQUEN model
• Systematics of the charged-hadron P_T spectrum and the nuclear suppression factor in heavy-ion collisions from sqrt{s}=200 GeV to sqrt{s} =2.76 TeV
• Jet quenching
• Full Jet Reconstruction in Heavy Ion Collisions
• Medium-modified Jet Shapes and other Jet Observables from in-medium Parton Shower Evolution
• The Nuclear Suppression Factor for P_T increasing towards the Kinematic Limit
• Monte Carlo for Jet Showers in the Medium
• The role of initial state radiation in quenched jets
• Reconstructed Jets at RHIC
• Studying the QGP with Jets at the LHC and RHIC