Counting master integrals: integration by parts vs. differential reduction
arXiv:1105.5319 · doi:10.1016/j.physletb.2011.06.094
Abstract
The techniques of integration by parts and differential reduction differ in the counting of master integrals. This is illustrated using as an example the two-loop sunset diagram with on-shell kinematics. A new algebraic relation between the master integrals of the two-loop sunset diagram that does not follow from the integration-by-parts technique is found.
6 pages, 1 figure; minor changes to the text, figure added; to appear in Phys. Lett. B
References in corpus (4)
- Algorithm FIRE -- Feynman Integral REduction
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