FN-2HDM: Two Higgs Doublet Models with Froggatt-Nielsen Symmetry

TL;DR

This paper integrates Two Higgs Doublet Models with Froggatt-Nielsen symmetry, predicting approximate flavor conservation and Peccei-Quinn symmetry, with implications for particle physics phenomenology.

Contribution

It introduces a novel embedding of 2HDMs within the FN framework, revealing new symmetry predictions and their phenomenological consequences.

Findings

Approximate NFC of Types II or IV in Yukawa sector

Approximate PQ symmetry in scalar sector

Discussion of phenomenological implications

Abstract

We embed Two Higgs Doublet Models (2HDMs) in the Froggatt Nielsen (FN) framework. We find that the approximate FN symmetry predicts i) approximate Natural Flavor Conservation (NFC) of Types II or IV in the Yukawa sector, and ii) approximate Peccei-Quinn (PQ) symmetry in the scalar sector. We discuss the phenomenological consequences of these features.