New results for loop integrals: AMBRE, CSectors, hexagon

Details New results for loop integrals: AMBRE, CSectors, hexagon New results for loop integrals: AMBRE, CSectors, hexagon

2009-02-27

arxiv.org/abs/0902.4830v1

POS ACAT08:124,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure, subm. to PoS(ACAT08)124

Scientific paper

We report on the three Mathematica packages hexagon, CSectors, AMBRE. They are useful for the evaluation of one- and two-loop Feynman integrals with a dependence on several kinematical scales. These integrals are typically needed for LHC and ILC applications, but also for higher order corrections at meson factories. hexagon is a new package for the tensor reduction of one-loop 5-point and 6-point functions with rank R=3 and R=4, respectively; AMBRE is a tool for derivations of Mellin-Barnes representations; CSectors is an interface for the package sector_decomposition and allows a convenient, direct evaluation of tensor Feynman integrals.

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