Generalized Recurrence Relations for Two-loop Propagator Integrals with Arbitrary Masses

Details Generalized Recurrence Relations for Two-loop Propagator Integrals with Arbitrary Masses Generalized Recurrence Relations for Two-loop Propagator Integrals with Arbitrary Masses

1997-03-14

arxiv.org/abs/hep-ph/9703319v1

Nucl.Phys. B502 (1997) 455-482

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, Latex, uses Axodraw.sty

Scientific paper

10.1016/S0550-3213(97)00376-3

An algorithm for calculating two-loop propagator type Feynman diagrams with arbitrary masses and external momentum is proposed. Recurrence relations allowing to express any scalar integral in terms of basic integrals are given. A minimal set consisting of 15 essentially two-loop and 15 products of one-loop basic integrals is found. Tensor integrals and integrals with irreducible numerators are represented as a combination of scalar ones with a higher space-time dimension which are reduced to the basic set by using the generalized recurrence relations proposed in Ref.[1] (Phys.Rev.D54 (1996) 6479).

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