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  • PhysRevD.99.032013

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Constraints on neutrino lifetime from the Sudbury Neutrino Observatory

Research output: Contribution to journalJournal article

  • SNO Collaboration
Article number032013
<mark>Journal publication date</mark>25/02/2019
<mark>Journal</mark>Physical Review D
Issue number3
Number of pages10
Publication statusPublished
Original languageEnglish


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.