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662 B
662 B
This subdirectory contains all files necessary for implementing a
recursion scheme that is appropriate when both the Gram determinant is
small and the modified Cayley determinant ("det Y") is small.
It is based on:
A.~Denner and S.~Dittmaier,
%``Reduction schemes for one-loop tensor integrals,''
Nucl.\ Phys.\ B {\bf 734}, 62 (2006)
[arXiv:hep-ph/0509141].
The scheme is described in section 5.5 and the recursion here is based
on equations (5.54)-(5.61) and their extensions.
The routines calculate triangle and box integrals up to:
rank 3 (with at least one recursion)
rank 5 (with no recursion)
rank 7 (no recursion, metric tensor components only)