Flavor structure, Higgs boson mass and dark matter in supersymmetric model with vector-like generations

TL;DR

This paper proposes a supersymmetric model with vector-like generations that simultaneously explains the Higgs mass, muon g-2, and dark matter, using flavor structures and a singlet field, aligning with observed fermion masses and mixings.

Contribution

It introduces a realistic flavor texture via the Froggatt-Nielsen mechanism and identifies a fermionic singlet as a dark matter candidate within a unified framework.

Findings

Reproduces CKM matrix and fermion masses at low energy

Identifies fermionic singlet as a viable dark matter candidate

Finds parameter space consistent with Higgs mass, muon g-2, and dark matter relic abundance

Abstract

We study a supersymmetric model in which the Higgs mass, the muon anomalous magnetic moment and the dark matter are simultaneously explained with extra vector-like generation multiplets. For the explanations, non-trivial flavor structures and a singlet field are required. In this paper, we study the flavor texture by using the Froggatt-Nielsen mechanism, and then find realistic flavor structures which reproduce the Cabbibo-Kobayashi-Maskawa matrix and fermion masses at low energy. Furthermore, we find that the fermion component of the singlet field becomes a good candidate of dark matter. In our model, flavor physics and dark matter are explained with moderate size couplings through renormalization group flows, and the presence of dark matter supports the existence of just three generations in low energy scales. We analyze the parameter region where the current thermal relic abundance of dark matter, the Higgs boson mass and the muon $g-2$ can be explained simultaneously.