Standard Model gauge coupling unification

TL;DR

This paper explores how the Standard Model's gauge couplings can unify at the electroweak scale using a specific grand unification group, predicting the Higgs boson mass.

Contribution

It introduces a novel unification scheme with Spin(8) and S_3, linking low-energy couplings to two parameters and predicting the Higgs mass.

Findings

Gauge coupling unification at electroweak scale achieved

Precise prediction for Higgs boson mass

Determination of couplings from two parameters

Abstract

We study the low energy evolution of coupling constants of the standard model and show that gauge coupling unification can be achieved at the electroweak scale with a suitable normalization. We choose the grand unification group to be the semidirect product of Spin(8) by S_3. In this case the three low energy gauge couplings and the two scalar self-couplings are determined in terms of two independent parameters. In particular, it gives a precise prediction for the mass of the Higgs boson.