Aspects of the tetrahedral neutrino mass matrix
Aspects of the tetrahedral neutrino mass matrix
The four-parameter tetrahedral neutrino mass matrix introduced earlier by the author is studied in two specific limits, both having only two parameters and resulting in ${\ensuremath{\theta}}_{13}=0$, ${\ensuremath{\theta}}_{23}=\ensuremath{\pi}/4$, and ${tan}^{2}{\ensuremath{\theta}}_{12}=1/2$. One limit corresponds to a recent proposal which predicts a normal ordering of neutrino masses; the other is new and allows …