夸克胶子物质内的qq→qq反应  

qq→qq Reaction in Quark-Gluon Matter

作　　者：马成程[1] 许晓明[1] 

机构地区：[1]上海大学物理系,上海200444

出　　处：《高能物理与核物理》2007年第2期162-167,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10135030);上海市教委项目(04AB04)资助~~

摘　　要：夸克胶子物质内的从夸克-夸克-反夸克到夸克-夸克-反夸克的散射过程会影响夸克物质和反夸克物质的热平衡化,其散射振幅是研究热平衡化的一个基础．依据微扰QCD理论,编制Fortran程序,推导了α_s^4阶的各个qq→qq散射费曼图的振幅平方和不同费曼图间的干涉项．Thermalization of quark matter and antiquark matter can be influenced by the scattering processes from quark-quark-antiquark to quark-quark-antiquark in quark-gluon matter, and the scattering amplitudes of such processes are the basis of studying thermalization. According to the perturbative QCD, a Fortran code for deriving individual squared amplitudes of all the qq-↑q→qq-↑q scattering Feynman diagrams and interference terms between different diagrams at order αs^4 is written and corresponding squared amplitudes and interference terms are derived.

关 键 词：夸克胶子物质 夸克-夸克-反夸克散射 跃迁振幅 

分 类 号：O572.33[理学—粒子物理与原子核物理]