Electroweak Resonant Leptogenesis in the Singlet Majoron Model
| dc.creator | Pilaftsis, Apostolos | |
| dc.date | 2008-05-12 | |
| dc.date | 2008-06-23 | |
| dc.date.accessioned | 2026-07-07T11:50:44Z | |
| dc.date.available | 2026-07-07T11:50:44Z | |
| dc.description | We study resonant leptogenesis at the electroweak phase transition in the singlet Majoron model with right-handed neutrinos. We consider a scenario, where the SM gauge group and the lepton number break down spontaneously during a second-order electroweak phase transition. We calculate the flavour- and temperature-dependent leptonic asymmetries, by including the novel contributions from the transverse polarisations of the W+/- and Z bosons. The required resummation of the gauge-dependent off-shell heavy-neutrino self-energies is consistently treated within the gauge-invariant framework of the Pinch Technique. Taking into consideration the freeze-out dynamics of sphalerons, we delineate the parameter space of the model that is compatible with successful electroweak resonant leptogenesis. The phenomenological and astrophysical implications of the model are discussed. | |
| dc.description | 28 pages, 4 figures, references and clarifications added, to appear in Physical Review D | |
| dc.identifier | https://arxiv.org/abs/0805.1677 | |
| dc.identifier | http://arxiv.org/abs/0805.1677 | |
| dc.identifier | Phys.Rev.D78:013008,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.013008 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203654 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Electroweak Resonant Leptogenesis in the Singlet Majoron Model | |
| dc.type | text |