期刊论文

Zhang, BW

英文

Modern Physics Letters A

0217-7323

2009

24

33

2649-2658

10.1142/S0217732309031971

US Department of Energy, Office of ScienceUnited States Department ofEnergy (DOE) [DE-AC52-06NA25396]; LANLUnited States Department of Energy(DOE)Los Alamos National Laboratory; MOE of ChinaMinistry of Education,China [IRT0624]; NNSF of ChinaNational Natural Science Foundation ofChina

本校为其他机构

Direct photon production in minimum bias d+Cu and d+Au and central Cu+Cu and Au+Au collisions at center-of-mass energies √s=62.4 GeV and 200 GeV at RHIC is systematically investigated. We study the jet quenching effect, the medium-induced photon bremsstrahlung and jet-photon conversion in the hot QGP. We account for known cold nuclear matter effects, such as the isospin effect,the Cronin effect, shadowing and cold nuclear matter energy loss. It is shown that at high pT the nuclear modification factor for direct photons R AA γ(PT) < 1 is domin...