Massless and massive one-loop three-point functions in negative dimensional approach
摘要
In this article we present the complete massless and massive one-loop triangle diagram results using the negative dimensional integration method (NDIM). We consider the following cases: massless internal fields; one massive, two massive with the same mass m and three equal masses for the virtual particles. Our results are given in terms of hypergeometric and hypergeometric-type functions of external momenta (and masses for the massive cases) where the propagators in the Feynman integrals are raised to arbitrary exponents and the dimension of the space-time D. Our approach reproduces the known results as well as other solutions as yet unknown in the literature. These new solutions occur naturally in the context of NDIM revealing a promising technique to solve Feynman integrals in quantum field theories.
引用
@article{arxiv.hep-th/0205158,
title = {Massless and massive one-loop three-point functions in negative dimensional approach},
author = {A. T. Suzuki and E. S. Santos and A. G. M. Schmidt},
journal= {arXiv preprint arXiv:hep-th/0205158},
year = {2011}
}