Kinetic mixing, proton decay and gravitational waves in SO(10) - INSPIRE

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Kinetic mixing, proton decay and gravitational waves in SO(10)

Rinku Maji
(
- IBS, Daejeon, CTPU and
- IBS, Daejeon
)
,
Qaisar Shafi
(
- Delaware U., Bartol Inst. and
- Delaware U.
)

Aug 26, 2024

20 pages

Published in:

JHEP 10 (2024) 157,
JHEP 10 (2024) 157

Published: Oct 23, 2024

e-Print:

2408.14350 [hep-ph]

DOI:

10.1007/JHEP10(2024)157

View in:

ADS Abstract Service

reference search1 citation

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Abstract: (Springer)

We present an SO(10) model in which a dimension five operator induces kinetic mixing at the GUT scale between the abelian subgroups U(1)

_{B−L}

and U(1)

_{R}

. We discuss in this framework gauge coupling unification and proton decay, as well as the appearance of superheavy quasistable strings with Gμ ~ 10

^{−8}

– 10

^{−5}

, where μ denotes the dimensionless string tension parameter. We use Bayesian analysis to show that for Gμ values ~ 4 × 10

^{−7}

− 10

^{−5}

, the gravitational wave spectrum emitted from the quasistable strings is in good agreement with the recent pulsar timing array data. Corresponding to Gμ values ~ 10

^{−8}

− 2 × 10

^{−7}

, proton decay is expected to occur at a rate accessible in the Hyper-Kamiokande experiment. Finally, we present the gravitational wave spectrum emitted by effectively stable strings with Gμ ≈ 10

^{−8}

that have experienced a certain amount of inflation. This can be tested with future detectors in the μHz frequency range.

Note:

20 pages, 5 captioned figures, published in JHEP

Cosmology of Theories BSM
Grand Unification
Early Universe Particle Physics
Phase Transitions in the Early Universe

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