MBnumerics: Numerical integration of Mellin-Barnes integrals in physical regions
Johann Usovitsch, Ievgen Dubovyk, Tord Riemann
TL;DR
This paper presents novel numerical techniques for evaluating Mellin-Barnes integrals in physical regions, crucial for precise Feynman integral computations in electroweak two-loop corrections at the Z-boson resonance.
Contribution
It introduces new methods for numerically integrating Mellin-Barnes integrals specifically tailored for physical regions in high-energy physics calculations.
Findings
Effective numerical techniques for Mellin-Barnes integrals in physical regions
Application to electroweak two-loop corrections at the Z-boson resonance
Improved accuracy in Feynman integral computations
Abstract
We introduce techniques to treat numerically Mellin-Barnes integrals in physical regions, which arise in the need of the computation of Feynman integrals for the electroweak two-loop corrections to the pseudo observables at the Z-boson resonance.
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