Unitarity Cuts with Massive Propagators and Algebraic Expressions for Coefficients

Details Unitarity Cuts with Massive Propagators and Algebraic Expressions for Coefficients Unitarity Cuts with Massive Propagators and Algebraic Expressions for Coefficients

2006-12-07

arxiv.org/abs/hep-ph/0612089v3

Phys.Rev.D75:105006,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages. v2: notation modified. v3: typos fixed

Scientific paper

10.1103/PhysRevD.75.105006

In the first part of this paper, we extend the d-dimensional unitarity cut method of hep-ph/0609191 to cases with massive propagators. We present formulas for integral reduction with which one can obtain coefficients of all pentagon, box, triangle and massive bubble integrals. In the second part of this paper, we present a detailed study of the phase space integration for unitarity cuts. We carry out spinor integration in generality and give algebraic expressions for coefficients, intended for automated evaluation.

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