Electroweak radiative corrections:Towards a full two-loop analysis
High Energy Physics - Phenomenology
2007-05-23 v1
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.
Keywords
Cite
@article{arxiv.hep-ph/0106020,
title = {Electroweak radiative corrections:Towards a full two-loop analysis},
author = {A. Ghinculov and Y. -P. Yao},
journal= {arXiv preprint arXiv:hep-ph/0106020},
year = {2007}
}
Comments
Presented at the Fifth International Symposium on Radiative Corrections (RADCOR 2000), Carmel, CA, September 11-15, 2000