Establishing a nu_{mu,tau} Component in the Solar Neutrino Flux

Abstract

We point out that the recoil electron kinetic energy spectra in the nu-e elastic scattering are different for incident nu_{e} or nu_{mu,tau}, and hence one can in principle establish the existence of the nu_{mu,tau} component in the solar neutrino flux by fitting the shape of the spectrum. This would be a new model-independent test of the solar neutrino oscillation in a single experiment, free from astrophysical and nuclear physics uncertainties. For the ^7Be neutrinos, it is possible to determine the nu_{mu,tau} component at BOREXINO or KamLAND, if the background is sufficiently low. Note that this effect is different from the distortion in the incident neutrino energy spectrum, which has been discussed in the literature.

12 pages, 3 figures, uses psfig. Figures reorganized, one corrected, conclusions unchanged

References in corpus (2)

• Measurement of the solar neutrino energy spectrum using neutrino-electron scattering
• Current Status of the Solar Neutrino Problem with Super-Kamiokande

Cited by in corpus (6)

• Constraints on Neutrino Mixing
• Seasonal Variations of the 7Be Solar Neutrino Flux
• Neutrinos from Stellar Collapse: Effects of flavour mixing
• Neutrinos from Stellar Collapse: Comparison of the effects of three and four flavour mixings
• Theoretical Aspects of Neutrino Oscillation
• QED Corrections to the Scattering of Solar Neutrinos and Electrons