CP Violaing Phases In SUSY GUT Models
| dc.creator | Accomando, E. | |
| dc.creator | Arnowitt, R. | |
| dc.creator | Dutta, B. | |
| dc.date | 2000-01-13 | |
| dc.date.accessioned | 2026-07-07T03:40:33Z | |
| dc.date.available | 2026-07-07T03:40:33Z | |
| dc.description | Supersymmetric CP violating phases are examined within the framework of gravity mediated supergravity grand unified models with R parity invariance for models with a light ($\stackrel{<}{\sim} 1$ TeV) particle spectrum. In the minimal model, the nearness of the t quark Landau pole naturally suppresses the t-quark cubic soft breaking parameter at the electroweak scale allowing the electron and neutron experimental electric dipole moment (EDM) constraints to be satisfied with a large GUT scale phase. However, the EDM constraints require that $θ_B$, the quadratic soft breaking parameter phase be small at the electroweak scale unless tan$β\stackrel{<}{\sim}3$, which then implies that at the GUT scale this phase must be large and highly fine tuned to satisfy radiative breaking of $SU(2)\times U(1)$. Similar results hold for non minimal models, and a possible GUT model is discussed where all GUT scale CP violating phases are naturally small (i.e. O($10^{-2})$). An interesting D-brane model is examined which enhances the size of the phases over much of the parameter space at the electroweak sector for tan$β\stackrel{<}{\sim} 5$, but still possesses the fine tuning problem at the GUT scale. | |
| dc.description | 18 pages, talk presented at SSS-99, Seoul, Korea, June, 1999 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0001121 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0001121 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/39305 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | CP Violaing Phases In SUSY GUT Models | |
| dc.type | text |