N. I. Ussyukina, A. I. Davydychev
Published 1993-07-23Version 1
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.
Comments: To appear in Proc. VII Intern. Workshop "High Energy Physics and Quantum Field Theory" (Sochi, Russia, October 1992), Yad.Fiz., v.56, No.11, p.172-179 (November 1993)
Journal: Phys.Atom.Nucl. 56 (1993) 1553-1557; Yad.Fiz. 56N11 (1993) 172-179
Infrared and extended on-mass-shell renormalization of two-loop diagrams
Exact Results on e+ e- --> e+ e- + 2 Photons at SLC/LEP Energies
On Feynman rules for not entirely external lines in leptogenesis and beyond
