Theory Seminars

Non-invertible Peccei-Quinn symmetry, natural 2HDM alignment, and the visible axion

by Antonio Delgado (Notre Damme U, USA)

Europe/Madrid
IFAE Seminar Room (In-Person)

IFAE Seminar Room

In-Person

Description

We identify m_12^2 as a spurion of non-invertible Peccei-Quinn symmetry in the type II 2HDM with gauged quark flavor. Thus a UV theory which introduces quark color-flavor monopoles can naturally realize alignment without decoupling and can furthermore revive the Weinberg-Wilczek axion. As an example we consider the SU(9) theory of color-flavor unification, which needs no new fermions. This is the first model-building use of non-invertible symmetry to find a Dirac natural explanation for a small relevant parameter

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