Testing realistic SO(10) SUSY GUTs with proton decay and gravitational waves - INSPIRE

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Testing realistic SO(10) SUSY GUTs with proton decay and gravitational waves

Aug 10, 2023

16 pages

Published in:

Phys.Rev.D 109 (2024) 5, 5

Published: Mar 1, 2024

e-Print:

2308.05799 [hep-ph]

DOI:

10.1103/PhysRevD.109.055025 (publication)

Report number:

IPPP/23/41

View in:

ADS Abstract Service

reference search27 citations

Citations per year

Abstract: (APS)

We present a comprehensive analysis of a supersymmetric SO(10) grand unified theory, which is broken to the Standard Model via the breaking of two intermediate symmetries. The spontaneous breaking of the first intermediate symmetry,

B - L

, leads to the generation of cosmic strings and right-handed neutrino masses and further to an observable cosmological background of gravitational waves and generation of light neutrino masses via type-I seesaw mechanism. Supersymmetry breaking manifests as sparticle masses below the

B - L

breaking but far above the electroweak scale due to proton decay limits. This naturally pushes the

B - L

breaking scale close to the grand unified theory scale, leading to the formation of metastable cosmic strings, which can provide a gravitational wave spectrum consistent with the recent pulsar timing arrays observation. We perform a detailed analysis of this model using two-loop renormalization group equations, including threshold corrections, to determine the symmetry-breaking scale consistent with the recent pulsar timing arrays signals such as NANOGrav 15-year data and testable by the next-generation limits on proton decay from Hyper-K and JUNO. Simultaneously, we find the regions of the model parameter space that can predict the measured quark and lepton masses and mixing, baryon asymmetry of our Universe, a viable dark matter candidate and can be tested by a combination of neutrinoless double beta decay searches and limits on the sum of neutrinos masses.

Note:

15 pages, 6 figures

p: decay
neutrino: mass
neutrino: right-handed: mass
baryon: asymmetry
gravitational radiation: background
gravitational radiation: spectrum
sparticle: mass
symmetry breaking: scale
scale: electroweak interaction
lepton: mass

References(103)

Figures(6)

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