arXiv subjects

A. I. Davydychev

Publications and source records attributed to A. I. Davydychev.

38 records · Page 3Linked to original sources

arXiv1993

Some Exact Results for Two-Loop Diagrams with Three and Four External Lines

Evaluation of three- and four-point diagrams with massless internal particles and arbitrary external momenta is considered. Exact results for some two-loop diagrams (planar and non-planar three-point contributions and the "double box" diagram) are obtained in terms of polylogarithms.

hep-ph↗

arXiv1993

Standard and hypergeometric representations for loop diagrams and the photon-photon scattering

By using the example of photon-photon scattering box diagrams, different representations for loop integrals are discussed. A connection between hypergeometric representation and dilogarithms is derived. An explicit analytic continuation formula to large values of Mandelstam variables is constructed.

hep-ph↗