Reconstructing seesaws |
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Authors: | Sacha Davidson Martin Elmer |
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Institution: | 1.IPNL,Université de Lyon, Université Lyon 1, CNRS/IN2P3,Villeurbanne cedex,France |
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Abstract: | We explore some aspects of “reconstructing” the heavy singlet sector of supersymmetric type I seesaw models, for two, three
or four singlets. We work in the limit where one light neutrino is massless. In an ideal world, where selected coefficients
of the TeV-scale effective Lagrangian could be measured with arbitrary accuracy, the two-singlet case can be reconstructed,
two three or more singlets can be differentiated, and an inverse seesaw with four singlets can be reconstructed. In a more
realistic world, we estimate ℓ
α
→ℓ
β
γ expectations with a “Minimal-Flavour-Violation-like” ansatz, which gives a relation between ratios of the three branching
ratios. The two-singlet model predicts a discrete set of ratios. |
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Keywords: | |
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