2006/09/30 by Hanzhong Zhang, Zhongbo Kang, Ben-Wei Zhang +1
Physics and Astronomy · #Bremsstrahlung #High-Energy Particle Collisions Research #Invariant mass #Jet (fluid) #Opacity #Particle physics theoretical and experimental studies #Parton #Photon #Quantum Chromodynamics and Particle Interactions #Quark #Radiation #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-010-1330-6
published as Eur.Phys.J.C67:445-454,2010 · 10 pages, 10 figures, revised version
arxiv created 2008/04/27 · openalex publication_date 2010/05/06 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Using the opacity expansion technique we investigate the photon radiation and dilepton production induced by multiple rescattering as energetic parton jet passing through the strong interacting medium. The real photon radiation and dilepton invariant-mass spectrums of the bremsstrahlung contribution from an energetic quark jet are presented. The leading contribution of total energy loss by photon emmision in medium of a higher energy quark jet is found to be proportional to the jet energy and has a linear dependence on the thickness of the nuclear target. The rescattering contribution for the dilepton is important only for small value of the invariant-mass and for the not so fast jet. The contribution fraction of the dilepton induced by rescattering in medium is found to be nearly a constant when the ratio of jet energy to Debye screening mass E/μ is large.