Constraints on neutrino lifetime from the Sudbury Neutrino Observatory

Aharmim, B. and Anthony, A. E. and Barros, N. and Beier, E. W. and Bellerive, A. and Beltran, B. and Bergevin, M. and Biller, S. D. and Bonventre, R. and Boudjemline, K. and Boulay, M. G. and Cai, B. and Callaghan, E. J. and Caravaca, J. and Chauhan, D. and Cleveland, B. T. and Cox, G. A. and Dai, X. and Deng, H. and Descamps, F. B. and Detwiler, J. A. and Doe, P. J. and Doucas, G. and Drouin, P. -L. and Dunford, M. and Elliott, S. R. and Evans, H. C. and Ewan, G. T. and Farine, J. and Fergani, H. and Fleurot, F. and Ford, R. J. and Formaggio, J. A. and Gagnon, N. and Gilje, K. and Goon, J. Tm. and Graham, K. and Guillian, E. and Habib, S. and Hahn, R. L. and Hallin, A. L. and Hallman, E. D. and Harvey, P. J. and Hazama, R. and Heintzelman, W. J. and Heise, J. and Helmer, R. L. and Kormos, L. L. and O'Keeffe, H. M. and Peeters, S. J. M. (2019) Constraints on neutrino lifetime from the Sudbury Neutrino Observatory. Physical Review D, 99 (3). ISSN 2470-0010

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The long baseline between Earth and the Sun makes solar neutrinos an excellent test beam for exploring possible neutrino decay. The signature of such decaywould be an energy-dependent distortion of the traditional survival probability which can be fit for using well-developed and high-precision analysis methods. Here a model including neutrino decay is fit to all three phases of B-8 solar neutrino data taken by the SudburyNeutrino Observatory (SNO). This fit constrains the lifetime of neutrino mass state nu(2) to be > 8.08 x 10(-5) s/eV at 90% confidence. An analysis combining this SNO result with those from other solar neutrino experiments results in a combined limit for the lifetime of mass state nu(2) of > 1.92 x 10(-3) s/eV at 90% confidence.

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Journal Article
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Physical Review D
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19 Mar 2019 13:10
Last Modified:
18 Sep 2020 04:50