Implications of theta_13 on Fritzsch-like lepton mass matrices

Abstract

Implications of the lepton mixing angles, in particular of theta_13, have been investigated for minimal as well as non-minimal Fritzsch-like textures for the case of Majorana neutrinos. Both, in minimal texture (texture 6 zero lepton mass matrices) and non-minimal textures (two cases of texture 5 zero lepton mass matrices), inverted hierarchy and degenerate scenario of neutrino masses have been ruled out. The implications of theta_13 have been investigated on the lightest neutrino mass m_\nu_1 as well as the effective Majorana mass m_ee.

Comments: 18 pages, 8 figures. arXiv admin note: substantial text overlap with arXiv:hep-ph/0607074, arXiv:hep-ph/0703005, arXiv:0904.4534