English

Global neutrino data and recent reactor fluxes: status of three-flavour oscillation parameters

High Energy Physics - Phenomenology 2015-05-27 v2 Solar and Stellar Astrophysics High Energy Physics - Experiment

Abstract

We present the results of a global neutrino oscillation data analysis within the three-flavour framework. We include latest results from the MINOS long-baseline experiment (including electron neutrino appearance as well as anti-neutrino data), updating all relevant solar (SK II+III), atmospheric (SK I+II+III) and reactor (KamLAND) data. Furthermore, we include a recent re-calculation of the anti-neutrino fluxes emitted from nuclear reactors. These results have important consequences for the analysis of reactor experiments and in particular for the status of the mixing angle θ13\theta_{13}. In our recommended default analysis we find from the global fit that the hint for non-zero θ13\theta_{13} remains weak, at 1.8σ\sigma for both neutrino mass hierarchy schemes. However, we discuss in detail the dependence of these results on assumptions concerning the reactor neutrino analysis.

Keywords

Cite

@article{arxiv.1103.0734,
  title  = {Global neutrino data and recent reactor fluxes: status of three-flavour oscillation parameters},
  author = {Thomas Schwetz and Mariam Tórtola and J. W. F. Valle},
  journal= {arXiv preprint arXiv:1103.0734},
  year   = {2015}
}

Comments

15 pages, 10 figures and 2 tables, v2: corrected version, main conclusions unchanged, references added