Constraints on Neutrino Lifetime from the Sudbury Neutrino Observatory

TY - JOUR

T1 - Constraints on Neutrino Lifetime from the Sudbury Neutrino Observatory

AU - Aharmim, B.

AU - Wilson Hawke, Jeanne Rachel

PY - 2019/2/25

Y1 - 2019/2/25

N2 - The long baseline between Earth and the Sun makes solar neutrinos an excellent test beam for exploring possible neutrino decay. The signature of such decay would 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 B8 solar neutrino data taken by the Sudbury Neutrino Observatory (SNO). This fit constrains the lifetime of neutrino mass state ν2 to be >8.08×10-5 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 ν2 of >1.92×10-3 s/eV at 90% confidence.

AB - The long baseline between Earth and the Sun makes solar neutrinos an excellent test beam for exploring possible neutrino decay. The signature of such decay would 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 B8 solar neutrino data taken by the Sudbury Neutrino Observatory (SNO). This fit constrains the lifetime of neutrino mass state ν2 to be >8.08×10-5 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 ν2 of >1.92×10-3 s/eV at 90% confidence.

UR - http://www.scopus.com/inward/record.url?scp=85062592141&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.99.032013

DO - 10.1103/PhysRevD.99.032013

M3 - Article

VL - 99

SP - 032013

JO - Phys.Rev.D

JF - Phys.Rev.D

IS - 3

M1 - 032013

ER -