Twoparameter neutrino mass matrices with two texture zeros
Abstract
We reanalyze Majorana neutrino mass matrices {M}_\nu with two texture zeros, by searching for viable hybrid textures in which the nonzero matrix elements of {M}_\nu have simple ratios. Referring to the classification scheme of Frampton, Glashow and Marfatia, we find that the mass matrix denoted by A1 allows the ratios ( {M}_\nu )_{\mu \mu } : ( {M}_\nu )_{\tau \tau } = 1:1 and ( {M}_\nu )_{e\tau } : ( {M}_\nu )_{\mu \tau } = 1:2. There are analogous ratios for texture A2. With these two hybrid textures, one obtains, for instance, good agreement with the data if one computes the three mixing angles in terms of the experimentally determined masssquared differences \Delta m^2_{31} and \Delta m^2_{21}. We could not find viable hybrid textures based on mass matrices different from those of cases A1 and A2.
 Publication:

Journal of Physics G Nuclear Physics
 Pub Date:
 May 2013
 DOI:
 10.1088/09543899/40/5/055003
 arXiv:
 arXiv:1208.4515
 Bibcode:
 2013JPhG...40e5003G
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 10 pages, no figures, minor changes, some references added