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Neutrino decay and Solar Neutrino Seasonal effect

M.M. Guzzo, R. Picoreti, P.C. de Holanda, O. Peres

in 38th International Conference on High Energy Physics

Contribution: pdf


We consider the possibility of solar neutrino decay as a sub-leading effect on their propagation between production and detection. Using current oscillation data, we set a new lower bound to the $\nu_2$ neutrino lifetime at $\tau_2\, /\, m_2 \geq 7.2 \times 10^{-4}\,\,\hbox{s}\,.\,\hbox{eV}^{-1}$ at $99\%\,$C.L.. Also, we show how seasonal variations in the solar neutrino data can give interesting additional information about neutrino lifetime.