Modular S_{3} flavoured Pati-Salam model with two family seesaw
Modular S_{3} flavoured Pati-Salam model with two family seesaw
We present a unified model of quarks and leptons with modular S_3 flavour symmetry, where the two lightest family masses are naturally suppressed via a Pati-Salam version of the type I seesaw mechanism, mediated through heavier vector-like fermions. Majorana neutrino masses are further suppressed through a double seesaw mechanism. The viable parameter space has a preferred range of the modulus field with Im(\tau) \sim 2, leading to successful fermion masses and mixing. The prediction for neutrinoless double beta decay is partly within the reach of the nEXO experiment. In particular, the Dirac CP violating neutrino oscillation phase is predicted to lie in the range \delta_{\rm CP}^{\nu}\sim 260^o-360^o.
hep-ph
Hernández, A.E. Cárcamo
0f940c1c-c164-4b72-ac51-28b546372d4a
Varzielas, Ivo de Medeiros
4f9b450f-fd23-4f80-bc82-28929aa7d651
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Vishnudath, K.N
a43c576c-f8dc-4a7a-bc36-7375756089ee
Hernández, A.E. Cárcamo
0f940c1c-c164-4b72-ac51-28b546372d4a
Varzielas, Ivo de Medeiros
4f9b450f-fd23-4f80-bc82-28929aa7d651
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Vishnudath, K.N
a43c576c-f8dc-4a7a-bc36-7375756089ee
[Unknown type: UNSPECIFIED]
Abstract
We present a unified model of quarks and leptons with modular S_3 flavour symmetry, where the two lightest family masses are naturally suppressed via a Pati-Salam version of the type I seesaw mechanism, mediated through heavier vector-like fermions. Majorana neutrino masses are further suppressed through a double seesaw mechanism. The viable parameter space has a preferred range of the modulus field with Im(\tau) \sim 2, leading to successful fermion masses and mixing. The prediction for neutrinoless double beta decay is partly within the reach of the nEXO experiment. In particular, the Dirac CP violating neutrino oscillation phase is predicted to lie in the range \delta_{\rm CP}^{\nu}\sim 260^o-360^o.
Text
2503.14610v1
- Author's Original
Available under License Other.
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Accepted/In Press date: 18 March 2025
Additional Information:
15 pages, 4 figures
Keywords:
hep-ph
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Local EPrints ID: 501143
URI: http://eprints.soton.ac.uk/id/eprint/501143
PURE UUID: 8962e541-0bf4-4395-8024-88a0bb25d39c
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Date deposited: 27 May 2025 16:48
Last modified: 27 May 2025 16:48
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Contributors
Author:
A.E. Cárcamo Hernández
Author:
Ivo de Medeiros Varzielas
Author:
K.N Vishnudath
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