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An Updated Numerical Analysis of eV Seesaw with Four Generations

High Energy Physics - Phenomenology 2011-01-04 v2

Abstract

We consider the so-called "eV seesaw" scenario, with right-handed Majorana mass MRM_R at eV order, extended to four lepton generations. The fourth generation gives a heavy pseudo-Dirac neutral lepton, which largely decouples from other generations and is relatively stable. The framework naturally gives 3 active and 3 sterile neutrinos. We update a previous numerical analysis of a 3+3 study of the LSND anomaly, taking into account the more recent results from the MiniBooNE experiment. In particular, we study the implications for the third mixing angle sin2θ13\mathrm{sin}^2\theta_{13}, as well as CP violation. We find that current data do not seriously constrain more than one sterile neutrinos.

Keywords

Cite

@article{arxiv.1004.2359,
  title  = {An Updated Numerical Analysis of eV Seesaw with Four Generations},
  author = {Wei-Shu Hou and Fei-Fan Lee},
  journal= {arXiv preprint arXiv:1004.2359},
  year   = {2011}
}

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References updated, and a Note Added