3–5 Dec 2024
Mainz Institute for Theoretical Physics, Johannes Gutenberg University
Europe/Berlin timezone

Two-loop running effects in Higgs physics in Standard Model Effective Field Theory

4 Dec 2024, 15:45
30m
Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Virtual Workshop

Speaker

Stefano Di Noi (KIT (ITP))

Description

We consider the renormalization group equations within the Standard Model Effective Field Theory and compute two-loop contributions proportional to the top quark Yukawa coupling for the operator generating an effective Higgs-gluon coupling, focusing on the Yukawa-like operator. These two-loop running effects are relevant for processes where the effective Higgs-gluon coupling contributes at a lower loop order compared to the Standard Model contribution and where a dynamical scale choice is adopted. Such a situation arises, for instance, in the Higgs transverse momentum distribution and Higgs pair production. We investigate the phenomenological impact of our computations on these two processes and find that the two-loop contributions are significant and can lead to deviations of up to 20% in the scenarios we consider.

Presentation materials