Seminars

TPPC weekly seminar (in-person): Joseph Davighi - "Flavour non-universality vs Naturalness"

Europe/London
Strand Building, S7.06

Strand Building, S7.06

Description

Speaker: Joseph Davighi (Zurich Uni.)

Title: Flavour non-universality vs Naturalness

Abstract: I will discuss flavour non-universal gauge interactions as a generic, and well-motivated, possibility for new physics at the TeV scale. Such dynamics could explain the hierarchical structure of fermion masses and mixing angles - the so-called 'flavour puzzle' - by delivering approximate flavour symmetries as accidental. The extended gauge interactions imply heavy gauge bosons that couple directly to the Higgs, which give unavoidable 1-loop contributions to the Higgs mass parameter. I will hence use naturalness as a guide in this space of low-scale flavour models, and discuss general phenomenological consequences in natural regions of parameter space. This includes measurable effects in precision flavour (and electroweak) observables, and high energy searches at the LHC with third family final states.