Maximal CP-Violation in Neutrino Mass Matrix in light of the latest Daya Bay result on $\theta_{13}$

Understand

The Daya Bay Collaboration (An et al) has recently proclaimed discovery of non-zero reactor angle, $\theta_{13}$, $\sin^{2}2\theta_{13}$=0.092$\pm$0.016(stat)$\pm$0.005(syst), at $5.2\sigma$ which is in conformity with the earlier observations of Abe et al, Adamson et al and Kerret et al last year.

• The discovery has immense implication for exploring CP-violation in the leptonic sector.
• In the present work, we examine CP-violation in Majorana neutrino mass matrix, in the basis where charged lepton mass matrix is diagonal, in which the ratio of elements are equal, also, termed as Strong Scaling Ans$\ddot{a}$tz (SSA).
• This Ans$\ddot{a}$tz has been known to explain the vanishing of $\theta_{13}$ and predict inverted hierarchy (IH) for the neutrino masses.