2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/103446In this talk, we describe part of our recent work \cite{FGdeR05} (see also \cite{F05,G05}) that gives new results in the context of asymptotic expansions of Feynman diagrams using the Mellin-Barnes representation.Talk given at the $12^{th}$ High-Energy Physics International Conference on Quantum Chromodynamics, 4-8 July (2005), Montpellier (France)High Energy Physics - PhenomenologyHigh Energy Physics - Theorytext