Seules les adresses mails institutionnelles sont acceptées lors de la création d'un compte. La création de compte est modérée, merci d'attendre leur validation. Only institutional email addresses will be accepted when asking for an account. Account creation is moderated, please wait until then.
Weekly seminars

Hierarchion - A Unified Framework to Address the Standard Model’s Hierarchies

par Gilad Perez (Weizmann)

Auditorium (Annecy-le-Vieux)



9 chemin de Bellevue 74940 ANNECY LE VIEUX

We present a framework that addresses the electroweak, the strong CP, and the flavor hierar- chies of the Standard Model, including neutrino masses. The naturalness of the electroweak scale is accounted for by the cosmological relaxation mechanism. The relaxion field is identified with the pseudo-Nambu-Goldstone boson of an abelian flavor symmetry, explaining the Standard Model’s mass hierarchies through the Froggatt-Nielsen mechanism. If the flavor symmetry has no QCD anomaly, the relaxion field can also solve the strong CP problem a` la Nelson-Barr, with its vac- uum expectation value at the stopping point being mapped to the Cabibbo-Kobayashi-Maskawa phase. The “rolling” potential of the relaxion is generated by the Nelson-Barr sector while the “backreaction” potential is induced by a sterile neutrino sector. The relaxion of our construction can be probed in variety of ways, in particular, in flavor-violating decays of the Standard Model fermions, motivating a further experimental effort in looking for new physics in rare decays of leptons and mesons.

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now