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Electroweak radiative corrections:Towards a full two-loop analysis

A. Ghinculov·Y. -P. Yao
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Abstract

In calculating electroweak radiative corrections at two-loop level, one encounters Feynman graphs with several different masses on the internal propagators and on the external legs, which lead to complicated scalar functions. We describe a general analytic-numerical reduction scheme for evaluating any two-loop diagrams with general kinematics and general renormalizable interactions, whereby ten basic functions form a complete set after tensor reduction. We illustrate this scheme by applying it to two- and three-point functions. We discuss the treatment of infrared singularities within this numerical approach.

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A. Ghinculov, Y. -P. Yao. 2001-06-01. Electroweak radiative corrections:Towards a full two-loop analysis. https://arxiv.org/abs/hep-ph/0106020

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