Resolution to neutrino masses, baryon asymmetry in leptogenesis and cosmic-ray anomalies
| dc.creator | Chen, Chuan-Hung | |
| dc.date | 2009-05-21 | |
| dc.date.accessioned | 2026-07-07T13:17:43Z | |
| dc.date.available | 2026-07-07T13:17:43Z | |
| dc.description | By extending the lepton sector of standard model to include one sterile neutrino and two sets of new Higgs doublets and right-handed neutrinos, denoted by $(η_1, N_1, N_3)$ and $(η_2, N_2, N_4)$, with two $Z_2$ symmetries, the puzzles of neutrino masses, matter-antimatter asymmetry and cosmic-ray excess observed by Fermi-LAT and PAMELA can be resolved simultaneously. The characters of the model are: (a) neutrino masses arise from type-I and radiative seesaw mechanisms; (b) leptogenesis leading to baryon asymmetry at the energy scale of $O(1- 10\rm TeV)$ could be realized through soft $Z_2$ symmetry breaking effects; and (c) the conditions of small couplings for a long-lived dark matter could be achieved naturally through loop corrections due to the same soft symmetry breaking effects. The candidate for dark matter in leptophilic decays could fit the Fermi-LAT and PAMELA data well. | |
| dc.description | 12 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0905.3425 | |
| dc.identifier | http://arxiv.org/abs/0905.3425 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/231207 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Astrophysical Phenomena | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Resolution to neutrino masses, baryon asymmetry in leptogenesis and cosmic-ray anomalies | |
| dc.type | text |