A Predictive Minimal Model for Neutrino Masses and Mixings

Details A Predictive Minimal Model for Neutrino Masses and Mixings A Predictive Minimal Model for Neutrino Masses and Mixings

2000-06-08

arxiv.org/abs/hep-ph/0006076v2

Phys.Rev.D62:093019,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

revtex, 9 pages, two references added, to be published in Phys. Rev. D presented at Neutrino' 2000, Sudbury, Canada

Scientific paper

10.1103/PhysRevD.62.093019

A model is considered in which the scale of the heavy singlet neutrinos is a few orders of magnitude below the grand unification scale and where right-handed vector bosons play still a negligible role. In a basis with diagonal up-quark and Dirac-neutrino mass matrices it is assumed that the heavy neutrino mass matrix has only zero elements in its diagonal, in analogy to the light neutrino mass matrix in the Zee model. Connecting then the remaining matrix elements with the small parameter describing the hierarchy of quark masses and mixings and by assuming commutativity of the charged lepton with the down-quark mass matrix, the calculation of all neutrino properties can be performed in terms of the two mass differences relevant for atmospheric and solar neutrino oscillations. CP-violation is directly related to CP-violation in the quark sector.

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