Constraints on neutrino decay lifetime using long-baseline charged and neutral current data

R. A. Gomes; A. L. G. Gomes; O. L. G. Peres

doi:10.1016/j.physletb.2014.12.014

paper

Constraints on neutrino decay lifetime using long-baseline charged and neutral current data

arXiv:1407.5640 · doi:10.1016/j.physletb.2014.12.014

Abstract

We investigate the status of a scenario involving oscillations and decay for charged and neutral current data from the MINOS and T2K experiments. We first present an analysis of charged current neutrino and anti-neutrino data from MINOS in the framework of oscillation with decay and obtain a best fit for non-zero decay parameter $α_{3}$ . The MINOS charged and neutral current data analysis results in the best fit for $∣Δ m_{32}^{2} ∣ = 2.34 \times 1 0^{- 3}$ ~eV $^{2}$ , $sin^{2} θ_{23} = 0.60$ and zero decay parameter, which corresponds to the limit for standard oscillations. Our combined MINOS and T2K analysis reports a constraint at the 90\% confidence level for the neutrino decay lifetime $τ_{3} / m_{3} > 2.8 \times 1 0^{- 12}$ ~s/eV. This is the best limit based only on accelerator produced neutrinos.

Constraints on neutrino decay lifetime using long-baseline charged and neutral current data

Abstract

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