Textures and flavour models

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Textures and flavour models
G.G.Ross, Oxford, 21st June 2004
Symmetries
Coherent picture of quark and lepton masses and
mixing?
Family?
Family?
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DATA
?
Bi-Tri Maximal Mixing Non Abelian Structure?
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DATA
?
Simple(?) flavour Group restricting Yukawa
couplings
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Quark Textures
Hierarchical
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Quark Textures
Hierarchical
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Is one favoured?
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SUSY
Cannot align Yukawa and A terms
Vives, GGR
Favours near symmetric structure
With similar structure for charged leptons
Neutrino mixing not related to large RH mixing
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Texture zero
GATTO, SARTORI, TONIN
symmetric
Fritzsch, Weinberg Roberts, Romanino, GGR,Velasco
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Extension to charged leptons GUT?
Georgi Jarlskog
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Extension to neutrinos???
Possible with see-saw
SRHD King
King,GGR Vives, Velasco-Sevilla, GGR
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Neutrino texture zero ?
Casas, Ibarra
CHOOZ
Ibarra, GGR
2ß decay, leptogenesis
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(No Transcript)
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2 Texture zeros 2RHN
0.22
0.08
0.08
With charged lepton contribution
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Quark lepton symmetry?

King, GGR Vives, Velasco-Sevilla, GGR
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Bi- Tri- maximal mixing
Barbieri,Hall,Kane, GGR King, GGR
de Medeiros Varzielas, GGR
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Extraction of Yukawa couplings crucial to
understanding fermion structure
Bounded off diagonal terms? (anti)symmetric,
hermitian? ? SUSY data???
A spontaneously broken family symmetry offers a
simple solution to the SUSY CP problem