منابع مشابه
Non-Abelian Discrete Flavor Symmetries
This is an incomplete survey of some non-Abelian discrete symmetries which have been used recently in attempts to understand the flavor structure of leptons and quarks. To support such symmetries, new scalar particles are required. In some models, they are very massive, in which case there may not be much of a trace of their existence at the TeV scale. In other models, they are themselves at th...
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We present a model for leptonic mixing and the lepton masses based on anomalous U(1) charges and a non-Abelian flavor symmetry. The model yields bilarge leptonic mixing, an inverted neutrino mass spectrum and hierarchical charged lepton masses. The non-Abelian flavor symmetry enforces an approximately maximal atmospheric mixing angle and predicts the relation θ12 π4 − θ13 between the solar and ...
متن کاملFlavor Symmetries and the Description of Flavor Mixing
It is shown that the hierarchical structure of the quark mass terms in the standard model suggests a new description of the flavor mixing. The latter is primarily a heavy quark mixing involving the t and b quarks, followed by a mixing exclusively in the uchannel or the d-channel. The complex phase describing CP violation arises only in the light quark sector. The Cabibbo angle is not a basic pa...
متن کاملNon-Abelian Discrete Flavor Symmetries from Magnetized/Intersecting Brane Models
We study non-abelian discrete flavor symmetries, which can appear in magnetized brane models. For example, D4, ∆(27) and ∆(54) can appear and matter fields with several representations can appear. We also study the orbifold background, where non-abelian flavor symmetries are broken in a certain way. email: [email protected] email: [email protected] email: [email protected]...
متن کاملFlavor unification and discrete non-Abelian symmetries.
Grand unified theories with fermions transforming as irreducible representations of a discrete nonabelian flavor symmetry can lead to realistic fermion masses, without requiring small fundamental parameters. We construct a specific example of a supersymmetric GUT based on the flavor symmetry ∆(75) — a subgroup of SU(3) — which can explain the observed quark and lepton masses and mixing angles. ...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2020
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2020.115098