One-loop QCD contribution to the potential of Q  

作　　者：刘产全 赵树民 张建军 杨宝柱 黄德宝 

机构地区：[1]Department of Physics and Technology,Hebei University

出　　处：《Chinese Physics C》2011年第2期126-129,共4页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10947167, 11047002, 11047120);Fund of Education Department of Hebei Province (2007409)

摘　　要：Without the non-relativistic approximation in one-loop function, the dominating one-loop contribution to the quark-antiquark potential is studied numerically in terms of perturbative Quantum Chromo Dynamics （QCD）. For Coulomb-like potential, the ratio of the one-loop correction to the tree diagram contribution is presented, whose absolute value is about 20%. one-loop contribution should be suppressed by a factor as/α deepen the comprehension of in Cornel potential. Our result is consistent with the analysis that the to the leading order contribution.Without the non-relativistic approximation in one-loop function, the dominating one-loop contribution to the quark-antiquark potential is studied numerically in terms of perturbative Quantum Chromo Dynamics （QCD）. For Coulomb-like potential, the ratio of the one-loop correction to the tree diagram contribution is presented, whose absolute value is about 20%. one-loop contribution should be suppressed by a factor as/α deepen the comprehension of in Cornel potential. Our result is consistent with the analysis that the to the leading order contribution.

关 键 词：ONE-LOOP POTENTIAL COULOMB 

分 类 号：O572.243[理学—粒子物理与原子核物理] O413.1[理学—物理]