Speaker
Konstantin Schmid
(University and INFN Padova)
Description
Higgs pair production offers the opportunity to probe correlations among the couplings of one or two Higgs bosons to fermions and gauge bosons. In this context, it serves as a powerful test of the underlying EFT framework. In this talk, we study Higgs pair production via gluon fusion within the Higgs Effective Field Theory (HEFT). We demonstrate that adopting a consistent power counting in combination with next-to-leading order (NLO) diagrams necessitates the inclusion of higher-dimensional operators beyond the leading ones. Finally, we analyze their phenomenological impact and provide a comparison to the Standard Model Effective Field Theory (SMEFT) at dimension six.
