Fermion masses and mixing in Δ ( 27 ) flavor model

An extension of the Standard Model (SM) based on the non-Abelian discrete group Delta (27) is considered. The Delta (27) flavor symmetry is spontaneously broken only by gauge singlet scalar fields, therefore our model is free from any flavor changing neutral current (FCNC). We show that the model ac...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2015-03, Vol.91 (5), Article 053003
Main Authors: Abbas, Mohammed, Khalil, Shaaban
Format: Article
Language:English
Subjects:
Cosmology
Fermions
Flavor (particle physics)
Flavours
Leptons
Mass matrix
Quarks
Scalars
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Summary:An extension of the Standard Model (SM) based on the non-Abelian discrete group Delta (27) is considered. The Delta (27) flavor symmetry is spontaneously broken only by gauge singlet scalar fields, therefore our model is free from any flavor changing neutral current (FCNC). We show that the model accounts simultaneously for the observed quark and lepton masses and their mixing. In the quark sector, we find that the up-quark mass matrix is flavor diagonal and the Cabbibo-Kobayashi-Maskawa (CKM) mixing matrix arises from down quarks. In the lepton sector, we show that the charged lepton mass matrix is almost diagonal. We also adopt type-I seesaw mechanism to generate neutrino masses. A deviated mixing matrix from tri-bimaximal Maki-Nakagawa-Sakata (MNS), with a correlation between sin [theta] sub(13) and sin super(2) [theta] sub(23) are illustrated.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.91.053003