Majorana phases beyond neutrinoless double beta decay
Abstract The ν M SM is defined as the SM extended to include dimension-5 operators. In this model neutrino masses violate lepton number, and two parameters of the lepton mixing matrix, the Majorana phases, are yet to be constrained. One combination of these phases and the neutrino masses, often deno...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-10-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP10(2024)100 |
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| _version_ | 1846137393777737728 |
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| author | Avital Dery Stefania Gori Yuval Grossman Zoltan Ligeti |
| author_facet | Avital Dery Stefania Gori Yuval Grossman Zoltan Ligeti |
| author_sort | Avital Dery |
| collection | DOAJ |
| description | Abstract The ν M SM is defined as the SM extended to include dimension-5 operators. In this model neutrino masses violate lepton number, and two parameters of the lepton mixing matrix, the Majorana phases, are yet to be constrained. One combination of these phases and the neutrino masses, often denoted by m ee , is probed by neutrinoless double beta decays (0νββ). We explore what information may be obtained beyond 0νββ, and how it depends on the lightest neutrino mass. We point out that with current central values of the mixing parameters, ∆L e = 2 and ∆L e = ∆L μ = 1 (or ∆L e = 2 and ∆L μ = 2) processes cannot simultaneously vanish, providing a no-lose theorem, in principle, for excluding the ν M SM, even in the case of normal mass ordering. |
| format | Article |
| id | doaj-art-f51f165079e749ad87496a4f3ad6ebc5 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-f51f165079e749ad87496a4f3ad6ebc52024-12-08T12:13:27ZengSpringerOpenJournal of High Energy Physics1029-84792024-10-0120241011610.1007/JHEP10(2024)100Majorana phases beyond neutrinoless double beta decayAvital Dery0Stefania Gori1Yuval Grossman2Zoltan Ligeti3Department of Physics, LEPP, Cornell UniversityDepartment of Physics and Santa Cruz Institute for Particle Physics, University of California Santa CruzDepartment of Physics, LEPP, Cornell UniversityErnest Orlando Lawrence Berkeley National Laboratory, University of CaliforniaAbstract The ν M SM is defined as the SM extended to include dimension-5 operators. In this model neutrino masses violate lepton number, and two parameters of the lepton mixing matrix, the Majorana phases, are yet to be constrained. One combination of these phases and the neutrino masses, often denoted by m ee , is probed by neutrinoless double beta decays (0νββ). We explore what information may be obtained beyond 0νββ, and how it depends on the lightest neutrino mass. We point out that with current central values of the mixing parameters, ∆L e = 2 and ∆L e = ∆L μ = 1 (or ∆L e = 2 and ∆L μ = 2) processes cannot simultaneously vanish, providing a no-lose theorem, in principle, for excluding the ν M SM, even in the case of normal mass ordering.https://doi.org/10.1007/JHEP10(2024)100Baryon/Lepton Number ViolationNeutrino InteractionsNeutrino Mixing |
| spellingShingle | Avital Dery Stefania Gori Yuval Grossman Zoltan Ligeti Majorana phases beyond neutrinoless double beta decay Journal of High Energy Physics Baryon/Lepton Number Violation Neutrino Interactions Neutrino Mixing |
| title | Majorana phases beyond neutrinoless double beta decay |
| title_full | Majorana phases beyond neutrinoless double beta decay |
| title_fullStr | Majorana phases beyond neutrinoless double beta decay |
| title_full_unstemmed | Majorana phases beyond neutrinoless double beta decay |
| title_short | Majorana phases beyond neutrinoless double beta decay |
| title_sort | majorana phases beyond neutrinoless double beta decay |
| topic | Baryon/Lepton Number Violation Neutrino Interactions Neutrino Mixing |
| url | https://doi.org/10.1007/JHEP10(2024)100 |
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