Degenerate or Hierarchical Neutrinos in Supersymmetric Inflation
| dc.creator | Lazarides, G. | |
| dc.date | 1999-05-22 | |
| dc.date.accessioned | 2026-07-07T11:35:41Z | |
| dc.date.available | 2026-07-07T11:35:41Z | |
| dc.description | Two moderate extensions of the minimal supersymmetric standard model are considered. The first one includes a U(1)_{B-L} gauge group, while the second is based on a left-right symmetric gauge group. In these models, hybrid inflation is `naturally' realized and the mu problem is solved via a Peccei-Quinn symmetry. Baryon number conservation is an automatic consequence of a R-symmetry. The baryon asymmetry of the universe is generated through a primordial leptogenesis. In the `B-L' case, neutrinos are assumed to acquire degenerate masses equal to about 1.5 eV by coupling to SU(2)_L triplet superfields, thereby providing the hot dark matter of the universe. In the `left-right' model, light neutrinos acquire hierarchical masses by the seesaw mechanism. They are taken from the small angle MSW resolution of the solar neutrino puzzle and the SuperKamiokande data. Maximal nu_{mu}-nu_{tau} mixing, implied by the same data, is easily accommodated. The gravitino and baryogenesis constraints can be satisfied, in both models, with more or less `natural' values of the relevant coupling constants. | |
| dc.description | 8 pages, 2 figures (included), uses JHEP.cls (included), talk given at the Trieste Meeting of the TMR Network on Physics Beyond the Standard Model, 24-27 February 1999, Trieste, Italy (to appear in the proceedings) | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9905450 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9905450 | |
| dc.identifier | PoSTRIESTE99:008,1999 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/198674 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Degenerate or Hierarchical Neutrinos in Supersymmetric Inflation | |
| dc.type | text |