Closed-Form Decomposition of One-Loop Massive Amplitudes

Understand

We present formulas for the coefficients of 2-, 3-, 4- and 5-point master integrals for one-loop massive amplitudes.

• The coefficients are derived from unitarity cuts in D dimensions.
• The input parameters can be read off from any unitarity-cut integrand, as assembled from tree-level expressions, after simple algebraic manipulations.
• The formulas presented here are suitable for analytical as well as numerical evaluation.