Work

Two-loop amplitude computation with HELAC

Year: 2024

Type: conference-paper

Abstract: We present recent progress in constructing a generic two-loop amplitude reduction algorithm within the computational framework HELAC. Following the HELAC tree- and one-loop paradigm, we have completed the generation and validation of the two-loop amplitude-integrand. Based on the well-known OPP reduction approach, we express the amplitude in terms of Feynman integrals which are further reduced to master integrals using IBP identities. We also discuss the numerical reconstruction of the amplitude in $d=4-2\epsilon$ dimensions.

Source: Loops and Legs in Quantum Field Theory (LL)

DOI: 10.22323/1.467.0051

Authors: Costas Papadopoulos, Giuseppe Bevilacqua, Dhimiter Canko, Aris Spourdalakis

Institutions: National Centre of Scientific Research "Demokritos", Institute of Nuclear and Particle Physics

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Commission, Hellenic Foundation for Research and Innovation

Awards: G2482947085, G434337789, G8075860695