Nonzero $ heta_{13}$ and CP violation from Broken $\mu- au$ Symmetry with $m_{1}=0$

摘要

Nonzero of mixing angle $\theta_{13}$ has some phenomenological consequenceson neutrino physics beyond the standard model. If the mixing angle$\theta_{13}\neq 0$, then there is the possibility of the CP violationexistence on the neutrino sector. To obtain a nonzero of mixing angle$\theta_{13}$ from neutrino mass matrix obey $\mu-\tau$, we break it byintroducing one small parameter $x$ into neutrino mass matrix and thencalculated the Jarlskog invariant as a measure of CP violation existence usingthe reported experimental data as input and put $m_{1}=0$ for neutrino mass innormal hierarchy.