Differences

This shows you the differences between two versions of the page.

@@ Line 1: / Line 1: @@
+====== TTP02-12 On the hierarchy of neutrino masses ======
+   <hidden TTP02-12  On the hierarchy of neutrino masses >   We present a model of neutrino masses combining the seesaw mechanism and
+ strong Dirac mass hierarchy and at the same time exhibiting a significantly
+ reduced hierarchy at the level of active neutrino masses. The heavy Majorana
+ masses are assumed to be degenerate. The suppression of the hierarchy is due to
+ a symmetric and unitary operator R whose role is discussed. The model gives
+ realistic mixing and mass spectrum. The mixing of atmospheric neutrinos is
+ attributed to the charged lepton sector whereas the mixing of solar neutrinos
+ is due to the neutrino sector. Small U_e3 is a consequence of the model. The
+ masses of the active neutrinos are given by $\mu_3\approx\sqrt{\Delta m_{@}^2}$
+ and $\mu_1/\mu_2\approx \tan^2\theta_\odot$.
+ </hidden>
+|**M. Jezabek and P. Urban**  |
+|**  Acta Phys.Polon.  B33 2571-2584 2002  **  |
+| {{preprints:2002:ttp02-12.pdf|PDF}} {{preprints:2002:ttp02-12.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0207018|arXiv]]   |
+| |