Open AccessRenormalization of two neutral mixing-loop chain propagators in standard model and its e+e-→μ+μ- cross section
Author(s) -
Xuewen Chen,
Zhen-Yun Fang,
Jiawei Zhang,
Tao Zhong,
Tu Wei-Xing
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.021101
Subject(s) - propagator , physics , electroweak interaction , renormalization , mixing (physics) , particle physics , lepton , loop (graph theory) , standard model (mathematical formulation) , cross section (physics) , quantum electrodynamics , gauge (firearms) , mathematical physics , nuclear physics , quantum mechanics , mathematics , combinatorics , archaeology , history , electron
Adopting the electroweak standard model, We analyzd the framework forms of photon γ and neutral gauge boson Z0 mixing-loop chain propagators and the relevant renormalization. Based on this, We obtained the analytic results of renormalized γ and Z0 mixing-loop chain propagators composed of different physical loops that participate in electroweak interactions. In addition, We applied our result to an important type of lepton interaction in high energy physics: e+e-→μ+μ-, then obtained the analytic result of cross section via renormalized γ and Z0 mixing-loop chain propagators. Furthermore, we compared the result with a series of experimental results, and found that the result of this paper is in good agreement with the experimental results. This study would offer certain academic reference to the theoretical study and application of common complex propagators.