One-loop on-shell renormalization of MSSM vertexes  

作　　者：赵树民 冯太傅 王芳 高铁军 张印杰 

机构地区：[1]Department of Physics and Technology, Hebei University [2]Department of Electronic and Information Engineering, Hebei University [3]Department of Physics, Dalian University of Technology

出　　处：《Chinese Physics C》2013年第5期1-8,共8页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation (11047002, 10975027);Natural Science Foundation of Hebei Province in China (A2011201118)

摘　　要：The on-shell renormalization scheme for electroweak theory is well studied in the standard model （SM）, but a consistent on-shell renormalization scheme for the minimal supersymmetric standard model （MSSM） is still unknown. In the MSSM, we study the on-shell scheme for three vertexes： with virtual SUSY particles （chargino, sneutrino, neutralino and slepton） at one-loop order. Instead of the amplitude of a single triangle diagram, the sum of the amplitude of triangle diagrams belonging to one suit can be renormalized in the on-shell scheme. One suit points out that the internal virtual particles are consistent. The zero-momentum scheme is also used for the renormalization. The two schemes can make the renormalized results decoupled, and in the MSSM some of the special characters of the on-shell scheme are shown. This work is propitious in completing the on-shell renormalization scheme in the MSSM.The on-shell renormalization scheme for electroweak theory is well studied in the standard model （SM）, but a consistent on-shell renormalization scheme for the minimal supersymmetric standard model （MSSM） is still unknown. In the MSSM, we study the on-shell scheme for three vertexes： with virtual SUSY particles （chargino, sneutrino, neutralino and slepton） at one-loop order. Instead of the amplitude of a single triangle diagram, the sum of the amplitude of triangle diagrams belonging to one suit can be renormalized in the on-shell scheme. One suit points out that the internal virtual particles are consistent. The zero-momentum scheme is also used for the renormalization. The two schemes can make the renormalized results decoupled, and in the MSSM some of the special characters of the on-shell scheme are shown. This work is propitious in completing the on-shell renormalization scheme in the MSSM.

关 键 词：on-shell MSSM zero-momentum 

分 类 号：O572.2[理学—粒子物理与原子核物理]