Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-12-22
Phys.Lett. B348 (1995) 503-512
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, latex, 3 figures, ps-file available at ftp://vsfys1.fi.uib.no/davydychev/bergen94-17.ps
Scientific paper
10.1016/0370-2693(95)00136-9
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.
Davydychev Andrei I.
Ussyukina Natalia I.
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