Discrete symmetries and models of flavor mixing
نویسندگان
چکیده
منابع مشابه
Models of Flavor with Discrete Symmetries
In an attempt to understand the observed patterns of lepton and quark masses, models invoking a flavor symmetry Gf , under which the Standard Model generations are charged, have been proposed. One particularly successful symmetry, U(2), has been extensively discussed in the literature. The Yukawa matrices in models based on this symmetry reproduce the observed mass ratios in the lepton and quar...
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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...
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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 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]...
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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: Journal of Physics: Conference Series
سال: 2011
ISSN: 1742-6596
DOI: 10.1088/1742-6596/335/1/012006