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| ====== TTP09-04 EDM constraints on flavored CP-violating phases ====== |
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| <hidden TTP09-04 EDM constraints on flavored CP-violating phases > The CP-violating phenomenology of the MSSM with Minimal Flavor Violation (MFV) |
| in the lepton sector is revisited. To this end, the most general |
| parametrizations of the slepton soft-breaking terms are constructed assuming a |
| seesaw mechanism of type I. After a critical reassessment of how the |
| CP-symmetry is broken within the MFV framework, all possible CP-violating |
| phases are introduced. From the strong hierarchy of their contributions to the |
| Electric Dipole Moments (EDMs), these phases are split into three classes: |
| flavor-blind, flavor-diagonal and flavor off-diagonal. In particular, the |
| phases from the neutrino sector belong to the last class; they start to |
| contribute only at the second order in the mass-insertion approximation and |
| have thus a negligible effect. It is then shown that to each class of phases |
| corresponds a unique largely dominant term in the MFV expansion. Numerically, |
| for a realistic range of MSSM and neutrino parameters, such that B(mu --> e |
| gamma) does not exceed its experimental bound, the three types of phases are |
| found to be allowed by the current bound on the electron EDM, though the next |
| generation of experiments should constrain tightly the flavor-blind |
| phase. Finally, we relax the MFV hypothesis and show how in the general MSSM, |
| the MFV operator basis can be used to judge of the naturality of the slepton |
| soft-breaking terms. |
| </hidden> |
| |**Mercolli, Lorenzo and Smith, Christopher** | |
| |** Nucl.Phys. B817 1-24 2009 ** | |
| | {{preprints:2009:ttp09-04.pdf|PDF}} {{preprints:2009:ttp09-04.ps|PostScript}} [[http://arxiv.org/abs/0902.1949|arXiv]] | |
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