Abstract
In this publication the first official release of the JEWEL 2.0.0 code is presented. JEWEL is a Monte Carlo event generator simulating QCD jet evolution in heavy-ion collisions. It treats the interplay of QCD radiation and re-scattering in a medium with fully microscopic dynamics in a consistent perturbative framework with minimal assumptions. After a qualitative introduction into the physics of JEWEL detailed information about the practical aspects of using the code is given.
Highlights
In heavy-ion collisions at collider energies jets can be reconstructed, as a substantial part of the jet fragments are accessible above the background
The assumptions underlying the construction of Jewel are that (1) the medium as resolved by the jet consists of a collection of partons, (2) the dominant effect of soft scattering can be included by an infra-red continuation of the perturbative matrix elements, (3) the interplay between competing radiative processes is governed by the formation times of the emissions and (4) the physical picture behind the LPM effect derived in the eikonal limit is valid in general kinematics
The data are not unfolded for jet energy resolution, so the Monte Carlo events were smeared with the parametrisation from [17]
Summary
In heavy-ion collisions at collider energies jets can be reconstructed, as a substantial part of the jet fragments are accessible above the background. This asks for the theoretical description of multi-particle final states that is most achieved using Monte Carlo codes. Jewel is a Monte Carlo that describes the QCD evolution of jets in vacuum and in a medium in a perturbative approach. The physics and performance of the latest version of Jewel have been discussed in detail elsewhere [2], the aim of this publication is to make the code available and usable. After a qualitative introduction to the physical picture of Jewel, technical aspects relevant for obtaining meaningful results are discussed. As the algorithmic structure of the code is rather complex users are advised not to modify the code
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