TextureZero Model for the Lepton Mass Matrices
Abstract
We suggest a simple model, based on the typeI seesaw mechanism, for the lepton mass matrices. The model hinges on an Abelian symmetry which leads to mass matrices with some vanishing matrix elements. The model predicts one massless neutrino and M_{eμ} = 0 (M is the effective lightneutrino Majorana mass matrix). We show that these predictions agree with the present experimental data if the neutrino mass spectrum is inverted, i.e. if m_{3} = 0, provided the Dirac phase δ is very close to maximal (±π/ 2). In the case of a normal neutrino mass spectrum, i.e. when m_{1} = 0, the agreement of our model with the data is imperfect — the reactor mixing angle θ_{13} is too small in our model. Minimal leptogenesis is not an option in our model due to the vanishing elements in the Yukawacoupling matrices.
 Publication:

Modern Physics Letters A
 Pub Date:
 September 2012
 DOI:
 10.1142/S0217732312501593
 arXiv:
 arXiv:1202.4024
 Bibcode:
 2012MPLA...2750159F
 Keywords:

 Neutrinos;
 seesaw;
 multiHiggs;
 14.60.Pq;
 11.30.Hv;
 Neutrino mass and mixing;
 Flavor symmetries;
 High Energy Physics  Phenomenology
 EPrint:
 10 pages, 3 figures