Seesaw mechanism in the sneutrino sector and its consequences
| dc.creator | Dedes, Athanasios | |
| dc.creator | Haber, Howard E. | |
| dc.creator | Rosiek, Janusz | |
| dc.date | 2007-07-25 | |
| dc.date | 2007-11-07 | |
| dc.date.accessioned | 2026-07-07T12:23:55Z | |
| dc.date.available | 2026-07-07T12:23:55Z | |
| dc.description | The seesaw-extended MSSM provides a framework in which the observed light neutrino masses and mixing angles can be generated in the context of a natural theory for the TeV-scale. Sneutrino-mixing phenomena provide valuable tools for connecting the physics of neutrinos and supersymmetry. We examine the theoretical structure of the seesaw-extended MSSM, retaining the full complexity of three generations of neutrinos and sneutrinos. In this general framework, new flavor-changing and CP-violating sneutrino processes are allowed, and are parameterized in terms of two $3\times 3$ matrices that respectively preserve and violate lepton number. The elements of these matrices can be bounded by analyzing the rate for rare flavor-changing decays of charged leptons and the one-loop contribution to neutrino masses. In the former case, new contributions arise in the seesaw extended model which are not present in the ordinary MSSM. In the latter case, sneutrino--antisneutrino mixing generates the leading correction at one-loop to neutrino masses, and could provide the origin of the observed texture of the light neutrino mass matrix. Finally, we derive general formulae for sneutrino--antisneutrino oscillations and sneutrino flavor-oscillations. Unfortunately, neither oscillation phenomena is likely to be observable at future colliders. | |
| dc.description | 69 pages, 5 figures, uses axodraw.sty. Version accepted for publication in JHEP: some comments and one more Appendix with additional discussion added, references updated | |
| dc.identifier | https://arxiv.org/abs/0707.3718 | |
| dc.identifier | http://arxiv.org/abs/0707.3718 | |
| dc.identifier | JHEP 0711:059,2007 | |
| dc.identifier | doi:10.1088/1126-6708/2007/11/059 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214161 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Seesaw mechanism in the sneutrino sector and its consequences | |
| dc.type | text |