High Precision for Hard Processes (HP2 2026)

Progress towards numerical reduction at two-loops within the HELAC framework

Not scheduled

20m

Speaker

Dr Aris Spourdalakis (NCSR Demokritos)

Description

I will present the current status in constructing a generic two-loop amplitude reduction algorithm within the HELAC computational framework. Following HELAC tree- and one-loop paradigm, we have completed the generation and validation of the two-loop amplitude-integrand as well as the algebraic reduction for Leading Color gg -> gg. I will present numerical construction and reduction results of the amplitude in d = 4 − 2ε dimensions. Following the OPP reduction approach, we express the amplitude in terms of Feynman integrals which are further reduced to master integrals through the IBP identities.