27–29 Sept 2023
Palazzone della Scuola Normale Superiore di Pisa, Cortona
Europe/Rome timezone

Top-quark loops in gg->ZH and gg->ZZ via a transverse momentum expansion

28 Sept 2023, 15:35
20m
Palazzone della Scuola Normale Superiore di Pisa, Cortona

Palazzone della Scuola Normale Superiore di Pisa, Cortona

Speaker

Marco Vitti

Description

In this talk I will present some recent developments in the calculation of the NLO QCD corrections for two gluon-initiated processes that are relevant for Higgs physics at the LHC, namely gg->ZH and gg->ZZ. The two-loop box diagrams with massive internal lines contributing to these amplitudes pose a technical challenge, and I will discuss their analytic calculation using a small-tansverse-momentum expansion, which also allows for a fast numerical evaluation of the QCD corrections.

Primary author

Marco Vitti

Presentation materials