Higgs and Effective Field Theory - HEFT 2026

Session

Flavour

12 Jun 2026, 11:40

Jardí Botànic, Valencia

27. Flavor hierarchies with nonminimal irreducible representations

Graeme Crawford

12/06/2026, 11:40

We consider a novel class of flavor models where the spurion breaking the flavor symmetries of the Standard Model transforms in a non-minimal irrep. Starting from initial $\mathcal{O}(1)$ untuned entries in the UV, we find that flavor hierarchies can be generated accidentally via multiple insertions of the spurion. By considering non-Abelian symmetries, we show that the pattern of...

15. Electroweak precision physics via angular distributions in hadronic τ decays

Santiago Paz Castro (Universitat de València)

12/06/2026, 12:00

Semileptonic τ decays mainly proceed via interactions between charged lepton and quark currents. The hadronization of the quark current is intrinsically nonperturbative and generally cannot be addressed analytically. In this work, we propose using symmetry arguments alone to construct clean angular observables that, within the Standard Model and in the absence of long-distance electromagnetic...