YaJEM - a Monte Carlo code for in-medium shower evolution

Abstract

High transverse momentum (P_T) QCD scattering processes are regarded as a valuable tool to study the medium produced in heavy-ion collisions, as due to uncertainty arguments their cross section should be calculable independent of medium properties whereas the medium then modifies only the final state partons emerging from a hard vertex. With the heavy-ion physics program at the CERN LHC imminent, the attention of high P_T physics in heavy ion collisions is shifting from the observation of hard single hadrons to fully reconstructed jets. However, the presence of a background medium at low P_T complicates jet-finding as compared to p-p collisions. Monte-Carlo (MC) codes designed to simulate the evolution of parton showers evolving into hadron jets are valuable tools to understand the complicated interplay between the medium modification of the jet and the bias introduced by a specific jet-finding scheme. However, such codes also use a set of approximations which needs to be tested against the better understood single high P_T hadron observables. In this paper, I review the ideas underlying the MC code YaJEM (Yet another Jet Energy-loss Model) and present some of the results obtained with the code.

Talk given at the workshop 'Jets in Proton-Proton and Heavy-Ion Collisions', Prague, Czech Republic, 12-14 Aug 2010

References in corpus (7)

• Q-PYTHIA: a medium-modified implementation of final state radiation
• Parton shower evolution in a 3-d hydrodynamical medium
• Universality of the Diffusion Wake from Stopped and Punch-Through Jets in Heavy-Ion Collisions
• A local Monte Carlo implementation of the non-abelian Landau-Pomerantschuk-Migdal effect
• A comparison study of medium-modified QCD shower evolution scenarios
• Medium-modified Jet Shapes and other Jet Observables from in-medium Parton Shower Evolution
• gamma-hadron correlations as a tool to trace the flow of energy lost from hard partons in heavy-ion collisions

Cited by in corpus (14)

• Jet quenching in high-energy heavy-ion collisions
• Jet Structure in Heavy Ion Collisions
• Measurement of charged jet suppression in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Jet-Medium Interactions at NLO in a Weakly-Coupled Quark-Gluon Plasma
• First measurement of jet mass in Pb-Pb and p-Pb collisions at the LHC
• Elliptic flow of thermal photons from event-by-event hydrodynamic model
• Measurement of the groomed jet mass in PbPb and pp collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV
• Cone size dependence of jet suppression in heavy-ion collisions
• Medium-induced radiative kernel with the Improved Opacity Expansion
• Parton shower evolution in medium and nuclear modification of photon-tagged jets in Pb+Pb collisions at the LHC
• Multi-partonic medium induced cascades in expanding media
• Jet Quenching in Heavy-Ion Collisions - The Transition Era from RHIC to LHC
• Theoretical Developments in QCD Jet Energy Loss
• Studying the QGP with Jets at the LHC and RHIC