2012/12/31 by Darius Jurciukonis, Thomas Gajdosik, Andrius Juodagalvis +1
Physics and Astronomy · #hep-ph
published as Acta Physica Polonica B Proceedings supplement, Vol. 6, No. 2, 675 (2013) · Submitted to the proceedings of "International Symposium on Multiparticle Dynamics", Kielce, Poland, 16-21 September 2012. arXiv admin note: text overlap with arXiv:1212.5370
arxiv created 2012/12/31 · arxiv updated 2014/12/19
The smallness of the neutrino masses can be well understood within the seesaw mechanism. We analyse two cases of the minimal extension of the standard model when one or two right-handed fields are added to the three left-handed fields. A second Higgs doublet is included in our model. We calculate the one-loop radiative corrections to the mass parameters which produce mass terms for the neutral leptons. In both cases we numerically analyse light neutrino masses as functions of the heavy neutrinos masses. Parameters of the model are varied to find light neutrino masses that are compatible with experimental data of solar Δm2_\odot and atmospheric Δm2atm neutrino oscillations for normal and inverted hierarchy.