English

Viability of bi-maximal solution of the Zee mass matrix

High Energy Physics - Phenomenology 2009-11-07 v3 High Energy Physics - Experiment

Abstract

We know LeLμLτL_e-L_\mu-L_\tau symmetry gives m12=m22>>m32m^2_1= m^2_2 >> m^2_3 pattern in Zee model. Δm2\Delta m^2_\odot emerges from a small breaking of this symmetry. Because this symmetry is broken very weakly θ\theta_\odot does not deviate much from tan2θ=1\tan^2 \theta_\odot=1 which is its value in the symmetric limit. This gives a mismatch with LMA solution where mixing is large but not exactly maximal. We confront this property of Zee mass matrix by phenomenologically analyzing recent results from solar and atmospheric neutrino oscillation experiments at various confidence levels. We conclude that LOW type solution is compatible with the Zee mass matrix at 99% confidence level when atmospheric neutrino deficit is explained by maximal νμντ\nu_\mu \leftrightarrow \nu_\tau oscillation. Thus the minimal version of the Zee model even though disfavored by the LMA type or VO type solutions, is compatible with LOW type solution of solar neutrino problem.

Keywords

Cite

@article{arxiv.hep-ph/0111133,
  title  = {Viability of bi-maximal solution of the Zee mass matrix},
  author = {Biswajoy Brahmachari and Sandhya Choubey},
  journal= {arXiv preprint arXiv:hep-ph/0111133},
  year   = {2009}
}

Comments

This version is accepted in Physics Letters B