منابع مشابه
Minimal Flavour Seesaw Models
We explore realizations of minimal flavour violation (MFV) for the lepton sector. We find that it can be realized within those seesaw models where a separation of the lepton number and lepton flavour violating scales can be achieved. We present a simple implementation of the MFV hypothesis that allows to reconstruct the flavour structure of the model from the values of the light neutrino masses...
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Analytic expressions of lepton-flavour-and lepton-number-violating decays of charged lep-tons are derived in the context of general SU(2) L ⊗ U(1) Y seesaw scenarios that are motivated by grand unified theories (GUT's) or superstring models, in which left-handed and/or right-handed neutral singlets are present. Possible constraints imposed by cosmology and low-energy data are briefly discussed....
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Flavour and CP violations induced by neutrino seesaw couplings in the soft, supersymmetry-breaking sector of the minimal supersymmetric SU(5) model, made realistic by nonrenormalizable operators, is analyzed for the three different implementations of the seesaw mechanism. Effective couplings are used to parametrize the couplings of renormalizable operators together with the corrections that non...
متن کامل→ μ μ̄ in Models with Minimal Flavour Violation
The predictions for the Bs,d − B̄s,d mixing mass differences ∆Ms,d and the branching ratios Br(Bs,d → μμ̄) within the Standard Model (SM) and its extensions suffer from considerable hadronic uncertainties present in theBs,d-meson decay constants FBs,d that enter these quantities quadratically. We point out that in the restricted class of models with minimal flavour violation (MFV) in which only t...
متن کاملπνν Decays in Models with Minimal Flavour Violation
We present a general discussion of the unitarity triangle from εK , ∆Md,s and K → πνν in models with minimal flavour violation (MFV), allowing for arbitrary signs of the generalized Inami–Lim functions Ftt and X relevant for (εK ,∆Md,s) and K → πνν, respectively. In the models in which Ftt has a sign opposite to the one in the Standard Model, i.e. Ftt < 0, the data for (εK ,∆Md,s) imply an abso...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2009
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2009/09/038