English

Simple Model for (3+2) Neutrino Oscillations

High Energy Physics - Phenomenology 2009-11-10 v2

Abstract

We formulate a set of naturalness criteria for sterile neutrinos (\nu') to be light, needed for reconciling the LSND neutrino anomaly with the other neutrino data. A light sterile neutrino becomes as natural as the light active neutrinos if it carries quantum numbers of a chiral gauge symmetry broken at the TeV scale. The simplest such theory is shown to be an SU(2) gauge theory with the \nu' transforming as a spin 3/2 multiplet. We develop this model and show that it leads naturally to the phenomenologically viable (3+2) neutrino oscillation scheme. We also present next-to-minimal models for light sterile neutrinos based on a chiral U(1) gauge symmetry.

Keywords

Cite

@article{arxiv.hep-ph/0312285,
  title  = {Simple Model for (3+2) Neutrino Oscillations},
  author = {K. S. Babu and Gerhart Seidl},
  journal= {arXiv preprint arXiv:hep-ph/0312285},
  year   = {2009}
}

Comments

12 pages in LaTeX, typos corrected, reference added

R2 v1 2026-07-22T13:52:18.293Z