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arXiv 1107.2302hep-th
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一个外壳外的红外线共线发散分析中的正则化策略

An off-shell I.R. regularization strategy in the analysis of collinear divergences

Carlo M. Becchi, Alessandra Repetto

摘要:

本文提出了一种基于Schwinger参数积分的Speer扇形分解结合Mellin-Barnes变换的Feynman振幅奇异性分析方法。详细介绍了扇区分解方法。我们提出的想法,应用该方法的共线奇点的分析包括QCD截面在无质量限制正则化的前向振幅的初始粒子动量的离壳选择。它示出了如何建议的策略工程在众所周知的情况下的一个循环校正深度非弹性散射。

英文摘要:

We present a method for the analysis of singularities of Feynman amplitudes based on the Speer sector decomposition of the Schwinger parametric integrals combined with the Mellin-Barnes transform. The sector decomposition method is described in some details. We suggest the idea of applying the method to the analysis of collinear singularities in inclusive QCD cross sections in the mass-less limit regularizing the forward amplitudes by an off-shell choice of the initial particle momenta. It is shown how the suggested strategy works in the well known case of the one loop corrections to Deep Inelastic Scattering.

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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