Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Automation of antenna subtraction in colour space

Jul 8, 2022, 10:15 AM
15m
Room 7 (Gialla)

Room 7 (Gialla)

Parallel Talk Formal Theory Formal Theory

Speaker

Matteo Marcoli (University of Zurich)

Description

In the past decade, antenna subtraction has been used to compute NNLO QCD corrections to a series of phenomenologically relevant processes. However, as for other subtraction schemes at NNLO, the application of this method proceeded in a process-dependent way, with each new calculation requiring a significant amount of work. In this talk we present an improved version of antenna subtraction which aims at achieving an automated and process-independent generation of the subtraction terms required for a NNLO calculation, as well as at overcoming some intrinsic limitations present in the traditional formulation. In this new approach, a set of integrated dipoles is used to reproduce the known infrared singularity structure of one- and two-loop amplitudes in colour space. The real-virtual and double-real subtraction terms are subsequently generated inferring their structure from the corresponding integrated subtraction terms. We demonstrate the applicability of this method computing the full-colour NNLO correction to hadronic three-jet production in the gluons-only assumption.

In-person participation Yes

Primary author

Matteo Marcoli (University of Zurich)

Co-author

Prof. Thomas Gehrmann (University of Zurich)

Presentation materials