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arXiv 2104.07520hep-ph
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循环正则化中带一个无质量顶点的标量单圈4点积分

Scalar one-loop 4-point integral with one massless vertex in loop regularization

Jin Zhang

摘要:

利用循环正则化方法,对具有一个无质量顶点的标量单圈四点函数进行了解析计算。该方法引入特征尺度$μ_{s}$来正则化发散积分。红外发散部分,其形式为$\ln^{2}(λ^{2}/μ^{2}_{s})$和$\ln(λ^{2}/μ^{2}_{s})$作为$μ_{s}\rightarrow 0$,其中$λ$是常数,并以质量和Mandelstrom变量表示,和红外稳定部分被很好地分离。结果显示明确通过$44$ difficulms在运动部门,我们的评估是有效的。

英文摘要:

The scalar one-loop 4-point function with one massless vertex is evaluated analytically by employing the loop regularization method. According to the method a characteristic scale $μ_{s}$ is introduced to regularize the divergent integrals. The infrared divergent parts, which take the form of $\ln^{2}(λ^{2}/μ^{2}_{s})$ and $\ln(λ^{2}/μ^{2}_{s})$ as $μ_{s}\rightarrow 0$ where $λ$ is a constant and expressed in terms of masses and Mandelstam variables, and the infrared stable parts are well separated. The result is shown explicitly via $44$ dilogarithms in the kinematic sector in which our evaluation is valid.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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