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arXiv 2211.08720hep-ph
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Loop正则化中的红外标量单圈三点积分

Infrared scalar one-loop three point integrals in loop regularization

Jin Zhang

摘要:

用环正则化方法计算了红外发散标量三点积分。三种红外发散积分,本文用回路正则化方法对无质量三角图、有一条和两条有质量内线的三角图进行了系统的计算,得到了解析结果。根据该方法,红外发散度由所谓的滑动标尺$μ_{s}$调节,其起到红外截止的作用。通过循环正则化获得的幅度依赖于$μ_{s}$,使得我们可以通过改变$μ_{s}$来提取不同的贡献。本文还导出了评价比例单圈三角图的一些一般性结果。

英文摘要:

The infrared divergent scalar three-point integrals are evaluated by the loop regularization method. Three kinds of infrared divergent integrals, i.e., massless triangle diagram, triangle diagrams with one and two massive internal lines, are systematically evaluated by loop regularization, analytic results are obtained. According the method, the infrared divergences are regulated by the so-called sliding scale $μ_{s}$ which plays the role of infrared cutoff. The amplitudes obtained through loop regularization depend on $μ_{s}$ such that we may extract different contribution by varying $μ_{s}$. Some general results for evaluation of scale one-loop triangle diagram are also derived.

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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