The renormalization group analysis of the large lepton flavor mixing and the neutrino mass

Details The renormalization group analysis of the large lepton flavor mixing and the neutrino mass The renormalization group analysis of the large lepton flavor mixing and the neutrino mass

1998-10-25

arxiv.org/abs/hep-ph/9810471v1

Prog.Theor.Phys.103:367-377,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX2e, graphics package, 18 pages with 13 eps figures

Scientific paper

10.1143/PTP.103.367

The Superkamiokande experiment suggests the large flavor mixing between nu_mu and nu_tau. We show that the mixing angle receives significant corrections from the renormalization group equation (RGE) when both the second and the third generation neutrino masses are larger than O(0.1eV). This means that the mixing angle must be small at the decoupling scale of right-handed neutrinos in the model containing a sterile neutrino nu_s with the mass spectrum of m_nu_s = m_nu_e << m_nu_mu = m_nu_tau.

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