CP Violation and Neutrino Masses and Mixings from Quark Mass Hierarchies

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dc.creatorBuchmuller, Wilfried
dc.creatorCovi, Laura
dc.creatorEmmanuel-Costa, David
dc.creatorWiesenfeldt, Soren
dc.date2007-09-28
dc.date2007-10-15
dc.date.accessioned2026-07-07T12:23:59Z
dc.date.available2026-07-07T12:23:59Z
dc.descriptionWe study the connection between quark and lepton mass matrices in a supersymmetric SO(10) GUT model in six dimensions, compactified on an orbifold. The physical quarks and leptons are mixtures of brane and bulk states. This leads to a characteristic pattern of mass matrices and high-energy CP violating phases. The hierarchy of up and down quark masses determines the CKM matrix and most charged lepton and neutrino masses and mixings. The small hierarchy of neutrino masses is a consequence of the mismatch of the up and down quark mass hierarchies. The effective CP violating phases in the quark sector, neutrino oscillations and leptogenesis are unrelated. In the neutrino sector we can accomodate naturally $\sin θ_{23} \sim 1$, $\sin θ_{13} \lesssim 0.1$ and $m_1 \lesssim m_2 \sim \sqrt{Δm^2_\text{sol}} < m_3 \sim \sqrt{Δm^2_\text{atm}}$.
dc.descriptionv2: typos corrected, references updated. 42 pages, 1 figure, LaTeX with JHEP3.cls
dc.identifierhttps://arxiv.org/abs/0709.4650
dc.identifierhttp://arxiv.org/abs/0709.4650
dc.identifierJHEP 0712:030,2007
dc.identifierdoi:10.1088/1126-6708/2007/12/030
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214180
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCP Violation and Neutrino Masses and Mixings from Quark Mass Hierarchies
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