期刊论文

Zhang Xiao-Ming

中文

中国物理C

1674-1137

2007

31

1

43-47

10.3321/j.issn:0254-3052.2007.01.010

国家自然科学基金（10575044）和教育部科学与技术研究重大项目基金（[2006]55）资助.作者张晓明,朱燕及何云存感谢向文昌的有益讨论和帮助.

本校为第一且通讯机构

基于轻夸克辐射能量谱，考虑夸克质量对部分子辐射能量损失的影响，利用死区因子把轻部分子辐射能量损失谱推广到重部分子辐射能量损失的情形．研究结果表明，利用与夸克质量相关的死区因子推广轻夸克辐射能量损失谱得到的重夸克辐射能量损失谱，与直接利用微扰QCD计算所得到的Djordjevic-Gyulassy(D-G)谱的结果一致，且极大简化了重夸克辐射能量损失的计算。

Radiative energy loss rate of heavy quark traversing through thermal dense matter which is formed in heavy ion collisions has been studied under an assumption of valid factorized method, in which light quark radiative spectrum is used to multiply an dead-cone factor depending on quark mass and energy. The numerical calculated results with energies at RHIC and LHC show that the heavy quark radiation spectra, obtained by extending light quark energy spectrum, are approximately consistent with that calculated under pQCD frame by Djordjecvico-Guulassy. The calculation is simplified by using of fac...