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Flavor physics without flavor symmetries

Buchmuller, Wilfried ; Patel, Ketan M.

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Título:
Flavor physics without flavor symmetries
Autor: Buchmuller, Wilfried ; Patel, Ketan M.
Notas: Published by APS, Woodbury, NY
1550-7998
2470-0029
Physical review / D 97(7), 075019 (2018). doi:10.1103/PhysRevD.97.075019
0556-2821
RelationTypeNote: IsVariantFormOf -- 10.1103/physrevd.97.075019
10.1103/physrevd.97.075019
2470-0010
1089-4918
1550-2368
Descrição: We quantitatively analyze a quark-lepton flavour model derived from a six-dimensional supersymmetric theory with $SO(10)\times U(1)$ gauge symmetry, compactified on an orbifold with magnetic flux. Two bulk $\mathbf{16}$-plets charged under the $U(1)$ provide the three quark-lepton generations whereas two uncharged $\mathbf{10}$-plets yield two Higgs doublets. At the orbifold fixed points mass matrices are generated with rank one or two. Moreover, the zero modes mix with heavy vectorlike split multiplets. The model possesses no flavour symmetries. Nevertheless, there exist a number of relations between Yukawa couplings, remnants of the underlying GUT symmetry and the wave function profiles of the zero modes, which lead to a prediction of the light neutrino mass scale, $m_{\nu_1} \sim 10^{-3}$ eV and heavy Majorana neutrino masses in the range from $10^{12}$ GeV to $10^{14}$ GeV. The model successfully includes thermal leptogenesis.
Editor: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Data de criação/publicação: 2018
Idioma: Inglês

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