Precise calculation of the cross sections of e■→f■ with mixed chain propagators in SM
Chen Xue, Fang Zhen · Journal of Atomic and Molecular Physics · 2013
Based on the electroweak standard model(SM),we systematically investigated the framework ofγ,Z_0mixed chain propagators,which composed of series of different physical loops in electroweak interaction, and achieved the relevant analytical calculation.By applying they,Z_0mixed chain propagators D_γ~(m·chain)(s),D_Z~(m·chain)(s)and D_(γZ)~(m·chain)(s) to e■→f ■,the total cross sectionsσ_(SM)~(chain) were calculated accurately. Compared with the experimental data of LEP,the numerical results indicated that our results are in better agreement with the experiment data than Born tree level predictions.