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December 2007, to be published in Physical Review D1
Textures with two traceless submatrices of the neutrino mass matrix
We propose a new texture for the light neutrino mass matrix. The proposal is based upon imposing zero-trace condition on the two by two sub-matrices of the complex symmetric Majorana mass matrix in the flavor basis where the charged lepton mass matrix is diagonal. Restricting the mass matrix to have two traceless sub-matrices may be found sufficient to describe the current data. Eight out of fifteen independent possible cases are found to be compatible with current data. Numerical and some approximate analytical results are presented. \\ PACS numbers: 14.60.Pq; 11.30.Hv; 14.60.St © 2008 The American Physical Society.
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