SU(5) aGUT: a minimal asymptotic grand unification model

TL;DR

This paper introduces a novel SU(5) grand unification model where gauge couplings converge to a fixed point in the ultraviolet, featuring stable dark matter candidates and a distinctive flavor structure.

Contribution

It proposes a minimal asymptotic grand unification framework with fixed point gauge coupling convergence, extra dimensions, and stable dark matter candidates.

Findings

Gauge couplings run towards a fixed point in the UV.

Stable dark matter candidates with 2.4 TeV mass.

Conserved baryon number prevents proton decay.

Abstract

We present a new grand unification paradigm, where gauge couplings do not need to be equal at any given scale, instead they run towards the same fixed point in the deep ultraviolet. We provide a concrete example based on SU(5) with a compactified extra space dimension. By construction, fermions are embedded in different SU(5) bulk fields, hence baryon number is conserved and proton decay is forbidden. The lightest Kaluza-Klein tier consists of stable states, providing an asymmetric Dark Matter candidate via their baryonic charges, with a mass of 2.4 TeV. The model features an interesting and predictive flavour structure.