Two-zero textures of the Majorana neutrino mass matrix and current experimental tests

In view of the latest T2K and MINOS neutrino oscillation data which hint at a relatively large theta(13), we perform a systematic study of the Majorana neutrino mass matrix M-nu with two independent texture zeros. We show that three neutrino masses (m(1), m(2), m(3)) and three CP-violating phases (delta, rho, sigma) can fully be determined from two neutrino masss-quared differences (delta m(2), Delta m(2)) and three flavor mixing angles (theta(12), theta(23), theta(13)). We find that seven patterns of M-nu (i.e., A(1,2), B-1,B-2,B-3,B-4 and C) are compatible with current experimental data at the 3 sigma level, but the parameter space of each pattern is more strictly constrained than before. We demonstrate that the texture zeros of M-nu are stable against the one-loop quantum corrections, and there exists a permutation symmetry between Patterns A(1) and A(2), B-1 and B-2 or B-3 and B-4. Phenomenological implications of M-nu on the neutrinoless double-beta decay and leptonic CP violation are discussed, and a realization of those texture zeros by means of the Z(n) flavor symmetries is illustrated.