Massive Two-Loop Integrals and Higgs Physics
摘要
We describe in some detail the present features of an automatic loop calculation program as well as the integration techniques that go into it. The program, called XLOOPS 1.0, allows one to calculate massive one- and two-loop Feynman diagrams in the Standard Model including their tensor structure. UV divergences in UV divergent integrals are explicitly computed in dimensional regularization. One-loop integrals are calculated analytically in d \neq 4 dimensions whereas two-loop integrals are reduced to two-fold integral representations which the program evaluates numerically. We discuss Higgs decay at the two-loop level as a first application of the novel integration techniques that are incorporated into XLOOPS.
关键词
引用
@article{arxiv.hep-ph/9709490,
title = {Massive Two-Loop Integrals and Higgs Physics},
author = {A. Frink and J. G. Körner and J. B. Tausk},
journal= {arXiv preprint arXiv:hep-ph/9709490},
year = {2009}
}
备注
Latex, 26 pages, 18 postscript figures included with epsfig, uses a4wide.sty. Invited talks given by J. G. K\"orner at the Workshop 'The Higgs Puzzle', Ringberg, Germany, Dec. 1996 and at the meeting 'Tests of Electroweak Symmetry Breaking', Ouranopoulis, Greece, May 1997; to be published in the Ouranopoulis proceedings. Comments on on ref.[19] corrected, and other minor revisions