The ATLAS Diboson Resonance in Non-Supersymmetric SO(10)

TL;DR

This paper proposes a non-supersymmetric SO(10) grand unified model with intermediate gauge symmetries that explains ATLAS diboson resonance excess, achieves gauge coupling unification, and offers dark matter candidates, with testable predictions for LHC and dark matter experiments.

Contribution

It introduces a novel SO(10) GUT model with specific intermediate gauge symmetries that accounts for recent diboson excesses and provides dark matter candidates, all while maintaining gauge coupling unification.

Findings

Model explains ATLAS diboson resonance excess

Achieves gauge coupling unification without supersymmetry

Provides stable dark matter candidates

Abstract

SO(10) grand unification accommodates intermediate gauge symmetries with which gauge coupling unification can be realized without supersymmetry. In this paper, we discuss the possibility that a new massive gauge boson associated with an intermediate gauge symmetry explains the excess observed in the diboson resonance search recently reported by the ATLAS experiment. The model we find has two intermediate symmetries, $SU(4)_C \otimes SU(2)_L \otimes SU(2)_R$ and $SU(3)_C \otimes SU(2)_L \otimes SU(2)_R \otimes U(1)_{B-L}$, where the latter gauge group is broken at the TeV scale. This model achieves gauge coupling unification with a unification scale sufficiently high to avoid proton decay. In addition, this model provides a good dark matter candidates, whose stability is guaranteed by a $Z_2$ symmetry present after the spontaneous breaking of the intermediate gauge symmetries. We also discuss prospects for testing these models in the forthcoming LHC experiments and dark matter detection experiments.