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| — | preprints:2009:ttp09-04 [2016/03/17 11:03] (current) – created - external edit 127.0.0.1 |
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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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