Parametrizing the Neutrino sector
Abstract
The original Standard Model has massless neutrinos, but the observation of neutrino oscillations requires that neutrinos are massive. The simple extension of adding gauge singlet fermions to the particle spectrum allows normal Yukawa mass terms for neutrinos. The seesaw mechanism then suggests an explanation for the observed smallness of the neutrino masses. After reviewing the framework of the seesaw we suggest a parametrization that directly exhibits the smallness of the mass ratios in the seesaw for an arbitrary number of singlet fermions and we present our plans to perform calculations for a process that might be studied at the LHC.
Cite
@article{arxiv.1111.1588,
title = {Parametrizing the Neutrino sector},
author = {Thomas Gajdosik and Andrius Juodagalvis and Darius Jurciukonis and Tomas Sabonis},
journal= {arXiv preprint arXiv:1111.1588},
year = {2011}
}
Comments
8 pages; uses appolb.cls; submitted to the proceedings of "Matter to the Deepest: Recent Development in Physics of Fundamental Interactions", Ustron, Poland, 12-18 Sep 2011