| Title: | Neutrino masses, ▫&δ_{PMNS}, and m[sub]{ββ} in SO(10)$▫ |
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| Authors: | ID Saad, Shaikh, Institut "Jožef Stefan" (Author)
ID Shafi, Qaisar (Author) |
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| Files: |  URL - Source URL, visit https://link.springer.com/article/10.1007/JHEP04(2026)204
 PDF - Presentation file, download (1,11 MB)
MD5: AAB9A5EF923B4E67252A1F5BE7D29740
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | We explore the leptonic sector of a recently proposed supersymmetric SO(10) model with supersymmetry breaking in the 3–10 TeV range. A new ingredient in this work is the requirement that the observed baryon asymmetry is explained via non-thermal leptogenesis, which can be realized in a large class of supersymmetric hybrid inflation models including SO(10). We provide estimates for the masses of the three Standard Model neutrinos (with the lightest mass m1 ≈ 5 meV) as well as the three right-handed neutrinos (M1 ≈ 109 GeV and M2,3 ≈ 1013 GeV). The best fit estimate for the leptonic CP violating parameter δPMNS ≈ 235°, and the value of the neutrinoless double beta decay mass parameter mββ ≈ 0.18 meV. A numerical analysis broadens the predicted range for δPMNS (100°–300°), but leaves largely intact the predictions for the six (light and heavy) neutrino masses and mββ. Our statistical analysis, which yields the likelihood-predicted ranges of the observables, is fully consistent with JUNO’s newly released first measurement of reactor neutrino oscillations in the -sin2 θ12 plane, with JUNO improving the precision by a factor of 1.6 relative to the combination of all previous measurements. The implementation of successful non-thermal leptogenesis allows us to provide estimates for the inflaton mass (mχ ≈ 7 × 109 GeV) and the reheating temperature (TRH ≈ 4 × 106 GeV). |
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| Keywords: | grand unification, supersymmetry, supersymmetric SO(10) model, neutrino masses and CP violations, non-thermal leptogenesis |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 12.12.2025 |
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| Article acceptance date: | 04.03.2026 |
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| Publication date: | 24.04.2026 |
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| Publisher: | SISSA |
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| Year of publishing: | 2026 |
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| Number of pages: | str. 1-18 |
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| Numbering: | Vol. 2026, article no. 204 |
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| Source: | Italija |
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| PID: | 20.500.12556/DiRROS-29507  |
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| UDC: | 539.1 |
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| ISSN on article: | 1029-8479 |
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| DOI: | 10.1007/JHEP04(2026)204 |
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| COBISS.SI-ID: | 278840067 |
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| Copyright: | © The Authors. |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 20. 5. 2026;
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| Publication date in DiRROS: | 22.05.2026 |
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| Views: | 90 |
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| Downloads: | 64 |
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