Speaker
David Cabo Almeida
(University of Göttingen)
Description
In theories with extended scalar sectors, the lightest new scalar could be accessible at colliders. Instead of relying on simplified models, we describe such scenarios in a general and gauge-invariant way using an extended HEFT framework with a nonlinearly realized electroweak symmetry. The structure of the effective operators depends on the $SU(2)$ nature of the scalar in the UV, leading to different suppressions by the heavy scale. In this talk, we show how dimensional analysis allows us to identify hierarchies among Wilson coefficients that translate into correlations between LHC observables, providing a model-independent strategy to interpret a potential scalar signal and infer its UV origin without fixing its $S U(2)$ representation.
Authors
David Cabo Almeida
(University of Göttingen)
Dr
Florian Goertz
(Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany)
Dr
Giorgio Arcadi
(University of Messina (Italy))
Maya Hager
(Max-Planck-Institut für Kernphysik)