Texture zeros of low-energy Majorana neutrino mass matrix in scheme

D Borah, M Ghosh, S Gupta, SK Raut - Physical Review D, 2017 - APS
D Borah, M Ghosh, S Gupta, SK Raut
Physical Review D, 2017APS
In this work we revisit the zero textures in low energy Majorana neutrino mass matrix when
the active neutrino sector is extended by a light sterile neutrino in the eV scale, ie, the 3+ 1
scheme. In 3+ 1 scenario, the low energy neutrino mass matrix (m ν) has ten independent
elements. Thus in principle one can have minimum one-zero texture to maximum ten-zero
texture. We summarize the previous results of one, two, three, and four-zero textures which
already exist in the literature and present our new results on five-zero textures. In our …
In this work we revisit the zero textures in low energy Majorana neutrino mass matrix when the active neutrino sector is extended by a light sterile neutrino in the eV scale, i.e., the scheme. In scenario, the low energy neutrino mass matrix () has ten independent elements. Thus in principle one can have minimum one-zero texture to maximum ten-zero texture. We summarize the previous results of one, two, three, and four-zero textures which already exist in the literature and present our new results on five-zero textures. In our analysis we find that among six possible five-zero textures, only one is allowed by the present data. We discuss possible theoretical model which can explain the origin of the allowed five-zero texture and discuss other possible implications of such a scenario. Our results also concludes that in scheme, one cannot have more than five-zeros in .
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