Sleptonarium (Constraints on the CP and Flavour Pattern of Scalar Lepton Masses)

Abstract

The constraints on the flavour and CP structure of scalar lepton mass matrices are systematically collected. The display of the resulting upper bounds on the lepton -slepton misalignment parameters is designed for an easy inspection of very large classes of models and the formula are arranged so as to suggest useful approximations. Interferences among the different contributions to lepton flavour violating transitions and lepton electric and magnetic dipole moments of generic character can either tighten or loose the bounds. A combined analysis of all rare leptonic transitions can disentangle the different contributions to yield hints on several phenomenological issues. The possible impact of these results on the study of the slepton misalignment originated in the seesaw mechanism and grand-unified theories is emphasized since the planned experiments are getting close to the precision required in such tests.

arXiv comment29 pages, 13 figures; v3: corrected misprints in appendix A

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