Revealing Hidden Regions in Wide-Angle and Forward Scattering

Einan Gardi, Franz Herzog, Stephen Jones*, Yao Ma

*Corresponding author for this work

Research output: Contribution to conferencePaper

Abstract

We discuss a class of Feynman Integrals containing hidden regions that are not straightforwardly identified using the geometric, or Newton polytope, approach to the method of regions. Using Landau singularity analysis and existing analytic results, we study the appearance of such regions in wide-angle and forward scattering and discuss how they can be exposed in both the momentum and parametric representations. We demonstrate that in the strict on-shell limit such integrals contain Landau singularities that prevent their direct numerical evaluation in parameter space and describe how they can be re-parameterised and dissected to circumvent this problem.
Original languageEnglish
Pages1-13
Number of pages13
DOIs
Publication statusPublished - 17 Sept 2024
EventLoops and Legs in Quantum Field Theory (LL2024) - Wittenberg, Germany
Duration: 14 Apr 202419 Apr 2024

Conference

ConferenceLoops and Legs in Quantum Field Theory (LL2024)
Abbreviated titleLL2024
Country/TerritoryGermany
CityWittenberg
Period14/04/2419/04/24

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