Viscous photons in relativistic heavy ion collisions

Autor:	Dion, Maxime, Paquet, Jean-Francois, Schenke, Bjoern, Young, Clint, Jeon, Sangyong, Gale, Charles
Rok vydání:	2011
Předmět:	High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevC.84.064901
Popis:	Theoretical studies of the production of real thermal photons in relativistic heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) are performed. The space-time evolution of the colliding system is modelled using MUSIC, a 3+1D relativistic hydrodynamic simulation, using both its ideal and viscous versions. The inclusive spectrum and its azimuthal angular anisotropy are studied separately, and the relative contributions of the different photon sources are highlighted. It is shown that the photon v2 coefficient is especially sensitive to the details of the microscopic dynamics like the equation of state, the ratio of shear viscosity over entropy density, eta/s, and to the morphology of the initial state. Comment: 15 pages, 12 figures. References updated and discussion added
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1109.4405 Zobrazit plný text záznamu View this record from Arxiv