English

On Teraelectronvolt Majorana Neutrinos

High Energy Physics - Phenomenology 2007-05-23 v2

Abstract

The issue of existence of Majorana neutrinos with masses of the order of TeV and substantial couplings is addressed. A general neutrino mass matrix MνM_{\nu} with both features is constructed, however, the form of MνM_{\nu} is constrained very much by severe relations among the elements of mDm_D and MRM_R submatrices of MνM_{\nu}. These general relations follow from the perturbative construction of the light neutrino mass spectrum. To avoid such large correlations between low mass parameters in mDm_D and large mass parameters in MRM_R, the Je\.zabek-Sumino see-saw model of bi-maximal neutrino mixing adopted to the TeV scale and the issue of possible symmetries of the matrix MνM_{\nu} are discussed. Results are supported by a few numerical examples which show directly the complexity of the problem.

Keywords

Cite

@article{arxiv.hep-ph/0201002,
  title  = {On Teraelectronvolt Majorana Neutrinos},
  author = {Janusz Gluza},
  journal= {arXiv preprint arXiv:hep-ph/0201002},
  year   = {2007}
}

Comments

Added a section on fine-tuning problems and symmetry arguments, abstract, conclusions modified. To appear in Acta Phys. Pol. B