Higgs decay into two photons from a 3HDM with flavor symmetry

TL;DR

This paper demonstrates that an excess in Higgs to two photons decay observed by ATLAS and CMS can be explained within a flavor-renormalizable three Higgs doublet model that aligns with all fermion and flavor constraints.

Contribution

It introduces a flavor-renormalizable 3HDM that accounts for Higgs decay excesses while satisfying fermion mass, mixing, and flavor-changing neutral current constraints.

Findings

The model explains the Higgs to two photons excess.

It remains consistent with fermion mass and mixing data.

Flavor constraints are satisfied within the model.

Abstract

In this short letter we show that the excess of events in the decay of Higgs to two photons reported by ATLAS and CMS can be easily accommodated in a flavor renormalizable three Higgs doublet model (3HDM). The model is consistent with all fermion masses, mixing angles, and flavor changing neutral current constraints.