Limit On the Neutrino Magnetic Moment Using 1496 Days of Super-Kamiokande-i Solar Neutrino Data

Kamiokande Collaboration; D. W. Liu

doi:10.1103/PhysRevLett.93.021802

paper

Limit On the Neutrino Magnetic Moment Using 1496 Days of Super-Kamiokande-i Solar Neutrino Data

arXiv:hep-ex/0402015 · doi:10.1103/PhysRevLett.93.021802

Abstract

A search for a non-zero neutrino magnetic moment has been conducted using 1496 live days of solar neutrino data from {\SK}. Specifically, we searched for distortions to the energy spectrum of recoil electrons arising from magnetic scattering due to a non-zero neutrino magnetic moment. In the absence of clear signal, we found $μ_{ν} \leq 3.6 \times 1 0^{- 10}$ $μ_{B}$ at 90% C.L. by fitting to the Super-Kamiokande day/night spectra. The fitting took into account the effect of neutrino oscillation on the shapes of energy spectra. With additional information from other solar neutrino and KamLAND experiments constraining the oscillation region, a limit of $μ_{ν} \leq 1.1 \times 1 0^{- 10}$ $μ_{B}$ at 90% C.L. was obtained.

5 pages, 4 figures

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Measurement of the Total Active 8B Solar Neutrino Flux at the Sudbury Neutrino Observatory with Enhanced Neutral Current Sensitivity

Limit On the Neutrino Magnetic Moment Using 1496 Days of Super-Kamiokande-i Solar Neutrino Data

Abstract

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