GeV Seesaw, Accidentally Small Neutrino Masses, and Higgs Decays to Neutrinos
| dc.creator | de Gouvea, Andre | |
| dc.date | 2007-06-12 | |
| dc.date | 2007-07-11 | |
| dc.date.accessioned | 2026-07-07T08:14:45Z | |
| dc.date.available | 2026-07-07T08:14:45Z | |
| dc.description | If the Standard Model particle content is extended by gauge singlet fermions (right-handed neutrinos), active neutrinos generically acquire (Majorana) masses, in agreement with our current understanding of the lepton sector. If the right-handed neutrino masses are of the same order as the electroweak symmetry breaking scale, it is usually expected that these will not mediate any experimentally observable effects. Here, I explore the fact that this is not necessarily the case. If neutrino masses are "accidentally small", active-sterile mixing angles can, according to current experimental bounds, be as large as several percent. If this is the case, I argue that the dominant decay mode of light (M_H less than 130 GeV) Higgs bosons could be into an active and a sterile neutrino. The sterile neutrino decays promptly into a charge lepton and an on- or off-shell W-boson, so that the dominant Higgs boson decay mode is H to leptons + jets + missing transverse energy. | |
| dc.description | 11 pages, revtex, 3 eps figures, references and constraint added, conclusions unchanged | |
| dc.identifier | https://arxiv.org/abs/0706.1732 | |
| dc.identifier | http://arxiv.org/abs/0706.1732 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/133242 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | GeV Seesaw, Accidentally Small Neutrino Masses, and Higgs Decays to Neutrinos | |
| dc.type | text |