Finite Higgs mass without Supersymmetry

TL;DR

This paper presents a class of chiral models where the Higgs mass remains finite at one-loop level without supersymmetry, achieved through extra-dimensional gauge components, and constructs a specific six-dimensional model compatible with string theory.

Contribution

It introduces a novel class of non-supersymmetric models with finite Higgs mass due to extra-dimensional gauge fields, and provides a concrete six-dimensional model embedded in string theory.

Findings

Finite one-loop Higgs potential without supersymmetry

A six-dimensional model with Standard Model features

Embedding in type I string theory D-brane setup

Abstract

We identify a class of chiral models where the one-loop effective potential for Higgs scalar fields is finite without any requirement of supersymmetry. It corresponds to the case where the Higgs fields are identified with the components of a gauge field along compactified extra dimensions. We present a six dimensional model with gauge group U(3)xU(3) and quarks and leptons accomodated in fundamental and bi-fundamental representations. The model can be embedded in a D-brane configuration of type I string theory and, upon compactification on a T^2/Z_2 orbifold, it gives rise to the standard model with two Higgs doublets.