Neutrino Large Mixing in Universal Yukawa Coupling Model with Small Violation

Details Neutrino Large Mixing in Universal Yukawa Coupling Model with Small Violation Neutrino Large Mixing in Universal Yukawa Coupling Model with Small Violation

2002-06-08

arxiv.org/abs/hep-ph/0206084v1

Phys.Rev. D66 (2002) 093011

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 4figures

Scientific paper

10.1103/PhysRevD.66.093011

We have analyzed the possibility that the universal Yukawa coupling (democratic mass matrix) with small violations of Dirac and Majorana neutrinos can induce the large mixing of neutrinos through the seesaw mechanism. The possibility can be achieved by the condition that the violation parameters of Majorana neutrinos are sufficiently smaller than the violation parameters of Dirac neutrinos. Allowed regions of the violation parameters producing the observed neutrino mass hierarchy and large neutrino mixing are not so restricted at present in contrast to the violation parameters for quark sector.

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