Precision neutrino data confronts $\mu \leftrightarrow \tau$ symmetry

Rambabu Korrapati, S. Uma Sankar

Neutrino oscillation data indicate that ${\theta }_{23}$ is close to $\pi /4$ and ${\theta }_{13}$ is very small. A simple $\mu \leftrightarrow \tau$ exchange symmetry of the neutrino mass matrix predicts $…