On the new method of computing two-loop massive diagrams
高能物理 - 唯象学
2007-05-23 v1
摘要
A recently proposed method of calculating scalar two-loop propagator and vertex functions with massive particles is illustrated with simple examples. A double integral representation is derived with the example of a propagator function. An analogous representation is used to compute the vertex function for space-like external momenta. Ways of dealing with divergent diagrams and of controlling the accuracy of the numerical evaluation of the two-loop functions are also discussed.
引用
@article{arxiv.hep-ph/9410332,
title = {On the new method of computing two-loop massive diagrams},
author = {Andrzej Czarnecki},
journal= {arXiv preprint arXiv:hep-ph/9410332},
year = {2007}
}
备注
8 pages, latex, uses epsf, a complete postscript file, including figures, is available via anonymous ftp at ttpux2.physik.uni-karlsruhe.de (129.13.102.139) as /ttp94-21/ttp94-21.ps, Local preprint number TTP 94-21