Neutrino masses and TeV scale resonant leptogenesis from supersymmetry breaking
We review a class of supersymmetric models in which the light neutrino masses result from higher-dimensional supersymmetry-breaking terms in the MSSM super- and Kähler-potentials. The mechanism used in these models is closely related to the Giudice-Masiero mechanism for the MSSM μ parameter and lead...
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| Format: | Journal article |
| Language: | English |
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2006
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| _version_ | 1826268188337242112 |
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| author | West, S |
| author_facet | West, S |
| author_sort | West, S |
| collection | OXFORD |
| description | We review a class of supersymmetric models in which the light neutrino masses result from higher-dimensional supersymmetry-breaking terms in the MSSM super- and Kähler-potentials. The mechanism used in these models is closely related to the Giudice-Masiero mechanism for the MSSM μ parameter and leads to TeV-scale right-handed neutrino and sneutrino states. In these models, the dominant contribution to the light neutrino (Majorana) mass matrix is a one-loop term with a sub-dominant tree-level "seesaw" contribution. It is also shown that it is possible to construct a natural model of TeV-scale leptogenesis via the resonant behavior of the one-loop self-energy contribution to the right-handed neutrino (N i) decay. This model addresses the primary problems of previous phenomenological studies of low-energy leptogenesis: a rational for TeV-scale right-handed neutrinos with small Yukawa couplings; 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 flavor symmetries in the right-handed neutrino sector. © World Scientific Publishing Company. |
| first_indexed | 2024-03-06T21:05:49Z |
| format | Journal article |
| id | oxford-uuid:3c67a154-7bc6-4744-a4be-88ae36d72e02 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:05:49Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:3c67a154-7bc6-4744-a4be-88ae36d72e022022-03-26T14:13:29ZNeutrino masses and TeV scale resonant leptogenesis from supersymmetry breakingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3c67a154-7bc6-4744-a4be-88ae36d72e02EnglishSymplectic Elements at Oxford2006West, SWe review a class of supersymmetric models in which the light neutrino masses result from higher-dimensional supersymmetry-breaking terms in the MSSM super- and Kähler-potentials. The mechanism used in these models is closely related to the Giudice-Masiero mechanism for the MSSM μ parameter and leads to TeV-scale right-handed neutrino and sneutrino states. In these models, the dominant contribution to the light neutrino (Majorana) mass matrix is a one-loop term with a sub-dominant tree-level "seesaw" contribution. It is also shown that it is possible to construct a natural model of TeV-scale leptogenesis via the resonant behavior of the one-loop self-energy contribution to the right-handed neutrino (N i) decay. This model addresses the primary problems of previous phenomenological studies of low-energy leptogenesis: a rational for TeV-scale right-handed neutrinos with small Yukawa couplings; 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 flavor symmetries in the right-handed neutrino sector. © World Scientific Publishing Company. |
| spellingShingle | West, S Neutrino masses and TeV scale resonant leptogenesis from supersymmetry breaking |
| title | Neutrino masses and TeV scale resonant leptogenesis from supersymmetry breaking |
| title_full | Neutrino masses and TeV scale resonant leptogenesis from supersymmetry breaking |
| title_fullStr | Neutrino masses and TeV scale resonant leptogenesis from supersymmetry breaking |
| title_full_unstemmed | Neutrino masses and TeV scale resonant leptogenesis from supersymmetry breaking |
| title_short | Neutrino masses and TeV scale resonant leptogenesis from supersymmetry breaking |
| title_sort | neutrino masses and tev scale resonant leptogenesis from supersymmetry breaking |
| work_keys_str_mv | AT wests neutrinomassesandtevscaleresonantleptogenesisfromsupersymmetrybreaking |