Remaining inconsistencies with solar neutrinos: can spin flavour precession provide a clue?

Abstract

A few inconsistencies remain after it has been ascertained that LMA is the dominant solution to the solar neutrino problem: why is the SuperKamiokande spectrum flat and why is the Chlorine rate prediction over two standard deviations above the data. There also remains the ananswered and important question of whether the active neutrino flux is constant or time varying. We propose a scenario involving spin flavour precession to sterile neutrinos with three active flavours that predicts a flat SuperK spectrum and a Chlorine rate prediction more consistent with data. We also argue that running the Borexino experiment during the next few years may provide a very important clue as to the possible variability of the solar neutrino flux.

3 pages, 2 figures, contribution to TAUP 2009 (Rome)

References in corpus (3)

• Comparative analysis of Gallex and GNO solar neutrino data
• Search for time modulations in the Gallex/GNO solar neutrino data
• Light sterile neutrinos, spin flavour precession and the solar neutrino experiments

Cited by in corpus (4)

• An Analysis of Apparent r-Mode Oscillations in Solar Activity, the Solar Diameter, the Solar Neutrino Flux, and Nuclear Decay Rates, with Implications Concerning the Solar Internal Structure and Rotation, and Neutrino Processes
• Analysis of Solar Neutrino Data from SuperKamiokande I and II: Back to the Solar Neutrino Problem
• Improving LMA predictions with non-standard interactions: neutrino decay in solar matter?
• Neutrino-Flux Variability, Nuclear-Decay Variability, and Their Apparent Relationship