A minimal non-supersymmetric SO(10) model with Peccei--Quinn symmetry

Marcus Pernow; Sofiane M. Boucenna; Tommy Ohlsson

A minimal non-supersymmetric SO(10) model with Peccei--Quinn symmetry

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arxiv 1812.10548 v3 pith:HK6J44BA submitted 2018-12-26 hep-ph

Sofiane M. Boucenna , Tommy Ohlsson , Marcus Pernow This is my paper · ORCID

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abstract

We present a minimal non-supersymmetric SO(10) GUT breaking directly to the Standard Model gauge group. Precise gauge coupling unification is achieved due to the presence of two color-octet scalars, one of which is accessible to LHC searches. Proton lifetime is predicted to be below $4.5\times 10^{34}$ years, which is within the projected five-year sensitivity of the proposed Hyper-Kamiokande experiment. We find that the Standard Model observables are reproduced to a reasonable accuracy in a numerical fit, which also predicts the unknown neutrino parameters. Finally, the two scalar representations stabilize the electroweak vacuum and the dark matter is comprised of axions.

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Accidental Peccei-Quinn Symmetry From Gauged U(1) and a High Quality Axion
hep-ph 2024-12 conditional novelty 6.0 of 10

Three explicit axion models are built where a gauged axial U(1) makes the Peccei-Quinn symmetry accidental, preserving axion quality against quantum gravity and giving domain wall number one.

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