Impact parameter and beam energy dependence for azimuthal asymmetry of direct photons and free protons in intermediate energy heavy-ion collisions

摘要：

Hard photon emitted from energetic heavy ion collisions is of very interesting since it does not experience the late-stage nuclear interaction, therefore it is useful to explore the early-stage information of matter phase. In this work, we have calculated the impact parameter and beam energy dependence for azimuthal asymmetry, characterized by directed transverse flow parameter F and elliptic asymmetry coefficient v2, of direct photons and the corresponding free protons in intermediate energy heavy-ion collisions. It is further shown the anti-correlated azimuthal asymmetry between direct photons and free protons.

关键词： hard photon, azimuthal asymmetry, BUU, impact parameter dependence, energy dependence

作者: LIU Gui-Hua MA Yu-Gang CAI Xiang-Zhou FANG De-Qing SHEN Wen-Qing TIAN Wen-Dong WANG Kun

作者单位: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

会议类型: 国际会议

会议名称: 第十二届全国核结构研讨会暨第八次全国核结构专题讨论会(12th National Conference on Nuclear Structure and the 8th Symposium on Nuclear Structure)

会议地点: 重庆

会议语种:英文

页码: 89-91

在线出版日期: 2008-05-10（万方平台首次上网日期，不代表论文的发表时间）