Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physics
Abstract We perform a comprehensive analysis of neutrinoless double beta (0νββ) decay and its interplay with low-energy flavor observables in a radiative neutrino mass model with scalar leptoquarks S 1( 3 ¯ $$ \overline{3} $$ , 1, 1/3) and R ~ 2 3 2 1 / 6 $$ {\overset{\sim }{R}}_2\left(3,2,1/6\right...
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| Format: | Article |
| Language: | English |
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2025-01-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP01(2025)004 |
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| author | P. S. Bhupal Dev Srubabati Goswami Chayan Majumdar Debashis Pachhar |
| author_facet | P. S. Bhupal Dev Srubabati Goswami Chayan Majumdar Debashis Pachhar |
| author_sort | P. S. Bhupal Dev |
| collection | DOAJ |
| description | Abstract We perform a comprehensive analysis of neutrinoless double beta (0νββ) decay and its interplay with low-energy flavor observables in a radiative neutrino mass model with scalar leptoquarks S 1( 3 ¯ $$ \overline{3} $$ , 1, 1/3) and R ~ 2 3 2 1 / 6 $$ {\overset{\sim }{R}}_2\left(3,2,1/6\right) $$ . We carve out the parameter region consistent with constraints from neutrino mass and mixing, collider searches, as well as measurements of several flavor observables, such as muon and electron anomalous magnetic moments, charged lepton flavor violation and rare (semi)leptonic kaon and B-meson decays, including the recent anomalies in R D ∗ $$ {R}_{D^{\left(\ast \right)}} $$ and B → Kν ν ¯ $$ B\to K\nu \overline{\nu} $$ observables. We perform a global analysis to all the existing constraints and show the (anti)correlations between all relevant Yukawa couplings satisfying these restrictions. We find that the most stringent constraint on the parameter space comes from μ → e conversion in nuclei and K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay. We also point out a tension between the muon and electron (g – 2) anomalies in this context. Taking benchmark values from the combined allowed regions, we study the implications for 0νββ decay including both the canonical light neutrino and the leptoquark contributions. We find that for normal ordering of neutrino masses, the leptoquark contribution removes the cancellation region that occurs for the canonical case. The effective mass in presence of leptoquarks can lie in the desert region between the standard normal and inverted ordering cases, and this can be probed in future ton-scale experiments like LEGEND-1000 and nEXO. |
| format | Article |
| id | doaj-art-eaaf792ddefb4572a548aafbdbc0e39c |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-eaaf792ddefb4572a548aafbdbc0e39c2025-01-19T12:07:41ZengSpringerOpenJournal of High Energy Physics1029-84792025-01-012025114610.1007/JHEP01(2025)004Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physicsP. S. Bhupal Dev0Srubabati Goswami1Chayan Majumdar2Debashis Pachhar3Department of Physics and McDonnell Center for the Space Sciences, Washington UniversityTheoretical Physics Division, Physical Research LaboratoryDepartment of Physics & Astronomy, University College LondonTheoretical Physics Division, Physical Research LaboratoryAbstract We perform a comprehensive analysis of neutrinoless double beta (0νββ) decay and its interplay with low-energy flavor observables in a radiative neutrino mass model with scalar leptoquarks S 1( 3 ¯ $$ \overline{3} $$ , 1, 1/3) and R ~ 2 3 2 1 / 6 $$ {\overset{\sim }{R}}_2\left(3,2,1/6\right) $$ . We carve out the parameter region consistent with constraints from neutrino mass and mixing, collider searches, as well as measurements of several flavor observables, such as muon and electron anomalous magnetic moments, charged lepton flavor violation and rare (semi)leptonic kaon and B-meson decays, including the recent anomalies in R D ∗ $$ {R}_{D^{\left(\ast \right)}} $$ and B → Kν ν ¯ $$ B\to K\nu \overline{\nu} $$ observables. We perform a global analysis to all the existing constraints and show the (anti)correlations between all relevant Yukawa couplings satisfying these restrictions. We find that the most stringent constraint on the parameter space comes from μ → e conversion in nuclei and K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay. We also point out a tension between the muon and electron (g – 2) anomalies in this context. Taking benchmark values from the combined allowed regions, we study the implications for 0νββ decay including both the canonical light neutrino and the leptoquark contributions. We find that for normal ordering of neutrino masses, the leptoquark contribution removes the cancellation region that occurs for the canonical case. The effective mass in presence of leptoquarks can lie in the desert region between the standard normal and inverted ordering cases, and this can be probed in future ton-scale experiments like LEGEND-1000 and nEXO.https://doi.org/10.1007/JHEP01(2025)004Lepton Flavour Violation (charged)Other Weak Scale BSM ModelsRare DecaysSemi-Leptonic Decays |
| spellingShingle | P. S. Bhupal Dev Srubabati Goswami Chayan Majumdar Debashis Pachhar Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physics Journal of High Energy Physics Lepton Flavour Violation (charged) Other Weak Scale BSM Models Rare Decays Semi-Leptonic Decays |
| title | Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physics |
| title_full | Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physics |
| title_fullStr | Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physics |
| title_full_unstemmed | Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physics |
| title_short | Neutrinoless double beta decay from scalar leptoquarks: interplay with neutrino mass and flavor physics |
| title_sort | neutrinoless double beta decay from scalar leptoquarks interplay with neutrino mass and flavor physics |
| topic | Lepton Flavour Violation (charged) Other Weak Scale BSM Models Rare Decays Semi-Leptonic Decays |
| url | https://doi.org/10.1007/JHEP01(2025)004 |
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