Phase-space integrals through Mellin-Barnes representation and its application to SIDIS

by Taushif Ahmed (University of Regensburg)

Tuesday 2 Dec 2025, 11:30 → 12:30 Europe/Zurich

Aula Caldirola (Dipartimento di Fisica Statale)

We present a new analytic framework for phase-space integrals, central to precision collider physics. Angular components are computed through multifold Mellin–Barnes representations, producing results in terms of Goncharov polylogarithms for up to four denominators. We establish recursion relations that systematically reduce higher-power denominators. The angular part is combined with the radial integration via a careful treatment of singularities. Applications to NNLO QCD corrections in semi-inclusive deep inelastic scattering will be discussed.