TeV scale resonant leptogenesis from supersymmetry breaking
We propose a model of TeV-scale resonant leptogenesis based upon recent models of the generation of light neutrino masses from supersymmetry-breaking effects with TeV-scale right-handed (rhd) neutrinos, $N_i$. The model leads to naturally large cosmological lepton asymmetries via the resonant behavi...
| Main Authors: | , , |
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| Formato: | Journal article |
| Publicado em: |
2004
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| _version_ | 1826260362179117056 |
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| author | Hambye, T March-Russell, J West, S |
| author_facet | Hambye, T March-Russell, J West, S |
| author_sort | Hambye, T |
| collection | OXFORD |
| description | We propose a model of TeV-scale resonant leptogenesis based upon recent models of the generation of light neutrino masses from supersymmetry-breaking effects with TeV-scale right-handed (rhd) neutrinos, $N_i$. The model leads to naturally large cosmological lepton asymmetries via the resonant behaviour of the one-loop self-energy contribution to $N_i$ decay. Our model addresses the primary problems of previous phenomenological studies of low-energy leptogenesis: a rational for TeV-scale rhd neutrinos with small Yukawa couplings so that the out-of equilibrium condition for $N_i$ decay is satisfied; the origin of the tiny, but non-zero mass splitting required between at least two $N_i$ masses; and the necessary non-trivial breaking of flavour symmetries in the rhd neutrino sector. The low mass-scale of the rhd neutrinos and their superpartners, and the TeV-scale $A$-terms automatically contained within the model offer opportunities for partial direct experimental tests of this leptogenesis mechanism at future colliders. |
| first_indexed | 2024-03-06T19:04:25Z |
| format | Journal article |
| id | oxford-uuid:14a52c5a-cee2-48d4-ac5c-f7cb96b5c95f |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:04:25Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:14a52c5a-cee2-48d4-ac5c-f7cb96b5c95f2022-03-26T10:20:56ZTeV scale resonant leptogenesis from supersymmetry breakingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:14a52c5a-cee2-48d4-ac5c-f7cb96b5c95fSymplectic Elements at Oxford2004Hambye, TMarch-Russell, JWest, SWe propose a model of TeV-scale resonant leptogenesis based upon recent models of the generation of light neutrino masses from supersymmetry-breaking effects with TeV-scale right-handed (rhd) neutrinos, $N_i$. The model leads to naturally large cosmological lepton asymmetries via the resonant behaviour of the one-loop self-energy contribution to $N_i$ decay. Our model addresses the primary problems of previous phenomenological studies of low-energy leptogenesis: a rational for TeV-scale rhd neutrinos with small Yukawa couplings so that the out-of equilibrium condition for $N_i$ decay is satisfied; the origin of the tiny, but non-zero mass splitting required between at least two $N_i$ masses; and the necessary non-trivial breaking of flavour symmetries in the rhd neutrino sector. The low mass-scale of the rhd neutrinos and their superpartners, and the TeV-scale $A$-terms automatically contained within the model offer opportunities for partial direct experimental tests of this leptogenesis mechanism at future colliders. |
| spellingShingle | Hambye, T March-Russell, J West, S TeV scale resonant leptogenesis from supersymmetry breaking |
| title | TeV scale resonant leptogenesis from supersymmetry breaking |
| title_full | TeV scale resonant leptogenesis from supersymmetry breaking |
| title_fullStr | TeV scale resonant leptogenesis from supersymmetry breaking |
| title_full_unstemmed | TeV scale resonant leptogenesis from supersymmetry breaking |
| title_short | TeV scale resonant leptogenesis from supersymmetry breaking |
| title_sort | tev scale resonant leptogenesis from supersymmetry breaking |
| work_keys_str_mv | AT hambyet tevscaleresonantleptogenesisfromsupersymmetrybreaking AT marchrussellj tevscaleresonantleptogenesisfromsupersymmetrybreaking AT wests tevscaleresonantleptogenesisfromsupersymmetrybreaking |