Degenerate Neutrinos and Supersymmetric Inflation
| dc.creator | Lazarides, G. | |
| dc.date | 1998-12-21 | |
| dc.date | 1999-05-22 | |
| dc.date.accessioned | 2026-07-07T11:35:36Z | |
| dc.date.available | 2026-07-07T11:35:36Z | |
| dc.description | A moderate extension of the minimal supersymmetric standard model which includes a U(1)_(B-L) gauge group (B and L being the baryon and lepton number) and a Peccei-Quinn symmetry, U(1)_PQ, is presented. The hybrid inflationary scenario is automatic and `natural' in this model. The mu problem of the minimal supersymmetric standard model is solved by coupling the electroweak higgses to fields which break U(1)_PQ. Baryon number conservation and, thus, proton stability are automatic consequences of a R-symmetry. Neutrinos are assumed to acquire degenerate masses of about 1.5 eV by coupling to SU(2)_L triplet superfields, thereby providing the hot dark matter of the universe. The inflaton decays into these triplets which, via their subsequent decay, produce a primordial lepton asymmetry later converted into the observed baryon asymmetry of the universe. The gravitino and baryogenesis constraints can be satisfied with `natural' values (of order 10^{-3}) of the relevant coupling constants. | |
| dc.description | 13 pages, Revtex, minor corrections | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9812454 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9812454 | |
| dc.identifier | Phys.Lett.B452:227-233,1999 | |
| dc.identifier | doi:10.1016/S0370-2693(99)00285-3 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/198643 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Degenerate Neutrinos and Supersymmetric Inflation | |
| dc.type | text |