Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-12-11
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 7 figures; for v2, added 2 figures, further discussion and appendix B
Scientific paper
We present a computation of elastic energy loss of hard partons traversing the bulk hydrodynamical medium created in ultrarelativistic heavy-ion collisions. The model is based on perturbative Quantum Chromodynamics (pQCD) cross sections for $2\to 2$ processes in which a hard incoming parton is assumed to interact with a thermal parton from the medium. We model the interactions of this type in a Monte-Carlo framework to account properly for exact energy-momentum conservation, non-eikonal parton propagation, parton conversion reactions and the possibility to create additional hard recoiling partons from the medium. For the thermodynamical properties of the medium we use a hydrodynamical evolution model. We do not aim at a full description of high transverse momentum ($P_T$) observables at this point. Rather, we view the model as a starting point in obtaining a baseline of what to expect under the assumptions that the medium is describable by thermal quasifree partons and that their pQCD interactions with the high-energy partons are independent. Deviations from this baseline then call for more sophisticated medium description, as well as inclusion of higher-order processes and coherence effects in the pQCD scatterings.
Auvinen Jussi
Eskola Kari. J.
Renk Thorsten
No associations
LandOfFree
A Monte-Carlo model for elastic energy loss in a hydrodynamical background does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Monte-Carlo model for elastic energy loss in a hydrodynamical background, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Monte-Carlo model for elastic energy loss in a hydrodynamical background will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-468555