Two-loop three-point diagrams with irreducible numerators
高能物理 - 唯象学
2014-11-17 v1 高能物理 - 理论
摘要
We study the problem of calculating two-loop three-point diagrams with irreducible numerators (i.e. numerators which cannot be expressed in terms of the denominators). For the case of massless internal particles and arbitrary (off-shell) external momenta, exact results are obtained in terms of polylogarithms. We also consider the tensor decomposition of two-loop three-point diagrams, and show how it is connected with irreducible numerators.
引用
@article{arxiv.hep-ph/9412356,
title = {Two-loop three-point diagrams with irreducible numerators},
author = {Natalia I. Ussyukina and Andrei I. Davydychev},
journal= {arXiv preprint arXiv:hep-ph/9412356},
year = {2014}
}
备注
12 pages, latex, 3 figures, ps-file available at ftp://vsfys1.fi.uib.no/davydychev/bergen94-17.ps