24 research outputs found
JEWEL 2.0.0 - Directions for Use
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.Comment: 17 pages, 14 figures, v2: minor change
Geometrical aspects of jet quenching in JEWEL
In this publication the performance of the Monte Carlo event generator JEWEL
in non-central heavy-ion collisions is investigated. JEWEL is a consistent
perturbative framework for jet evolution in the presence of a dense medium. It
yields a satisfactory description of a variety of jet observables in central
collisions at the LHC, although so far with a simplistic model of the medium.
Here, it is demonstrated that also jet measurements in non-central collisions,
and in particular the dependence of the jet suppression on the angle relative
to the reaction plane, are reproduced by the same model.Comment: 16 pages, 5 figure
Interplay between hydrodynamics and jets
By combining the jet quenching Monte Carlo JEWEL with a realistic
hydrodynamic model for the background we investigate the sensitivity of jet
observables to details of the medium model and quantify the influence of the
energy and momentum lost by jets on the background evolution. On the level of
event averaged source terms the effects are small and are caused mainly by the
momentum transfer.Comment: poceedings of the XXIV Quark Matter conference (2014
LPM-Effect in Monte Carlo Models of Radiative Energy Loss
Extending the use of Monte Carlo (MC) event generators to jets in nuclear
collisions requires a probabilistic implementation of the non-abelian LPM
effect. We demonstrate that a local, probabilistic MC implementation based on
the concept of formation times can account fully for the LPM-effect. The main
features of the analytically known eikonal and collinear approximation can be
reproduced, but we show how going beyond this approximation can lead to
qualitatively different results.Comment: 4 pages, 3 figures - To appear in the conference proceedings for
Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee; v2: removed line
number
Coherent Radiative Parton Energy Loss beyond the BDMPS-Z Limit
It is widely accepted that a phenomenologically viable theory of jet
quenching for heavy ion collisions requires the understanding of medium-induced
parton energy loss beyond the limit of eikonal kinematics formulated by
Baier-Dokshitzer-Mueller-Peigne-Schiff and Zakharov (BDMPS-Z). Here, we
supplement a recently developed exact Monte Carlo implementation of the BDMPS-Z
formalism with elementary physical requirements including exact energy-momentum
conservation, a refined formulation of jet-medium interactions and a treatment
of all parton branchings on the same footing. We document the changes induced
by these physical requirements and we describe their kinematic origin.Comment: 8 pages, 4 figure
Jet energy loss and equilibration
The field of jet quenching studies is witnessing an interesting development marked by the appearance of jet sub-structure observables. I give my personal view on this class of observables and comment on how they are connected to thermalisation