Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-04-30
PoS High-pTphysics09 2009:022,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
Contribution to the 4th international workshop High-pT physics at LHC 09, February 4-7, 2009, Prague, Czech Republic, submitte
Scientific paper
The Monte Carlo model JEWEL 1.0 (Jet Evolution With Energy Loss) simulates parton shower evolution in the presence of a dense QCD medium. In its current form medium interactions are modelled as elastic scattering based on perturbative matrix elements and a simple prescription for medium induced gluon radiation. The parton shower is interfaced with a hadronisation model. In the absence of medium effects JEWEL is shown to reproduce jet measurements at LEP. The collisional energy loss is consistent with analytic calculations, but with JEWEL we can go a step further and characterise also jet-induced modifications of the medium. Elastic and inelastic medium interactions are shown to lead to distinctive modifications of the jet fragmentation pattern, which should allow to experimentally distinguish between collisional and radiative energy loss mechanisms. In these proceedings the main JEWEL results are summarised and a Monte Carlo algorithm is outlined that allows to include the Landau-Pomerantschuk-Migdal effect in probabilistic frameworks.
Stachel Johanna
Wiedemann Urs Achim
Zapp Korinna
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