1995/05/03 by Bernd A. Kniehl, M. Spira · 4 citations
Physics and Astronomy · #hep-ph
published as Z.Phys. C69 (1995) 77-88 · 24 pages, latex, no figures
arxiv created 1995/05/03 · arxiv updated 2009/11/30
We present low-energy theorems for the calculation of loop amplitudes with external scalar or pseudoscalar Higgs bosons which are light compared to the loop particles. Starting from existing lowest-order versions of these theorems, we show how their applicability may be extended to the two--loop level. To illustrate the usefulness of these theorems, we discuss a number of applications to Higgs production and decay at and beyond the one--loop order.