English

Neutrino mixing matrix and masses from a generalized Friedberg-Lee model

High Energy Physics - Phenomenology 2016-05-03 v3

Abstract

The overall characteristics of the solar and atmospheric neutrino oscillation are approximately consistent with a tribimaximal form of the mixing matrix UU of the lepton sector. Exact tribimaximal mixing leads to θ13=0\theta_{13}=0. However, recent results from Daya Bay and RENO experiments have established a nonzero value for θ13\theta_{13}. Keeping the leading behavior of UU as tribimaximal, we use a generalized Fridberg-Lee neutrino mass model along with a complementary ansatz to incorporate a nonzero θ13\theta_{13} along with CP violation. We generalize this model in two stages: In the first stage we assume μτ\mu-\tau symmetry and add imaginary components which leads to nonzero phases. In the second stage we add a perturbation with real components which breaks the μτ\mu-\tau symmetry and this leads to a nonzero value for θ13\theta_{13}. The combination of these two generalizations leads to CP violation. Using only two of the experimental data, we can fix all of the parameters of our model and predict not only values for the other experimental data, which agree well with the available data, but also the masses of neutrinos and the CP violating phases and parameters. These predictions include the following: mνe(0.0330.037) eV\langle m_{\nu_e} \rangle\approx(0.033-0.037)~eV, mνμ(0.0430.048) eV\langle m_{\nu_\mu} \rangle\approx(0.043-0.048)~ eV, mντ(0.0460.051) eV\langle m_{\nu_\tau} \rangle\approx(0.046-0.051)~ eV, and 59.21δ59.3459.21^{\circ}\lesssim \delta\lesssim 59.34^{\circ}

Keywords

Cite

@article{arxiv.1505.04296,
  title  = {Neutrino mixing matrix and masses from a generalized Friedberg-Lee model},
  author = {N. Razzaghi and S. S. Gousheh},
  journal= {arXiv preprint arXiv:1505.04296},
  year   = {2016}
}

Comments

arXiv admin note: text overlap with arXiv:hep-ph/0308119 by other authors