【摘要】 通过在标准模型下对双光子碰撞产生τ+τ-的弱电辐射修正———包括虚修正和软光子修正的计算,得到了单圈修正下γγ→τ+τ-过程的散射截面,并讨论了树图和单圈弱电修正下散射截面随质心能量s的变化关系的比较.本项研究对实验测量单个H iggs粒子产生的背景的分析非常重要.更多还原

【Abstract】 The authors calculate the cross-section with one-loop electroweak corrections to the process γγ→τ~+τ~-in the standard model(SM),including virtual corrections and soft photon radiative correction and discuss the relations between the cross-sections in tree level(and one-loop corrected cross sections) and center-mass(c.m.) energy s.It is important to seek the backgrounds relevant to single Higgs boson production processes.更多还原