Nonzero theta(13) for neutrino mixing in the context of A(4) symmetry

Understand

In the original 2004 paper which first derived tribimaximal mixing in the context of A(4), i.e.

• the non-Abelian finite symmetry group of the tetrahedron (Plato's fire), as its simplest application, it was also pointed out how theta(13) nonzero may be accommodated.
• On the strength of the new T2K result that 0.03 (0.04) < sin^2 2 theta(13) < 0.28 (0.34) for delta(CP)=0 and normal (inverted) neutrino mass hierarchy, we perform a more detailed analysis of how this original idea may be realized in the context of A(4).