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- W315898867 abstract "Texture zeroes in neutrino mass matrix $M_nu$ may give us hints about the symmetries involved in neutrino mass generation. We examine the viability of such texture zeroes in a model independent way through a bottom-up approach. Using constraints from the neutrino oscillation data, we develop an analytic framework that can identify these symmetries and quantify deviations from them. We analyze the textures of $M_nu$ as well as those of $M_M$, the mass matrix of heavy Majorana neutrinos in the context of Type-I seesaw. We point out how the viability of textures depends on the absolute neutrino mass scale, the neutrino mass ordering and the mixing angle $theta_{13}$. We also examine the compatibility of discrete flavor symmetries like $mu$--$tau$ exchange and $S_3$ permutation with the current data. We show that the $mu-tau$ exchange symmetry for $M_nu$ can be satisfied for any value of the absolute neutrino mass, but for $M_nu$ to satisfy the $S_3$ symmetry, neutrino masses have to be quasi-degenerate. On the other hand, both these symmetries are currently allowed for $M_M$ for all values of absolute neutrino mass and both mass orderings." @default.
- W315898867 created "2016-06-24" @default.
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- W315898867 date "2008-12-03" @default.
- W315898867 modified "2023-09-27" @default.
- W315898867 title "Texture zeroes and discrete flavor symmetries in light and heavy Majorana neutrino mass matrices: a bottom-up approach" @default.
- W315898867 hasPublicationYear "2008" @default.
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