Work

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

Year: 2025

Type: article

Abstract: A bstract We identify $$ {m}_{12}^2 $$ 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.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep02(2025)178

Authors: Antonio Delgado, Seth Koren

Institution: University of Notre Dame

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funder: National Science Foundation

Award: Identifying Elusive Particles and Interactions with Cosmology and Colliders