2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/199747We present a set of algebraic functions for evaluating the coefficients of the scalar integral basis of a general one-loop amplitude. The functions are derived from unitarity cuts, but the complete cut-integral procedure has been carried out in generality so that it never needs to be repeated. Where the master integrals are known explicitly, the results here can be used as a black box with tree-level amplitudes as input and one-loop amplitudes as output.32 pages, 1 figureHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext