A Natural Explanation of Be/B Neutrino Flux Anomaly in the RSFP Scenario

概要

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Recent solar neutrino data reveal a seriotrs anortnaly in the relative neutrino fluxes from difl'erentsteps in the chain of therrnonuclear reaxctions responsible f'or energy generation in the stars.Boron-8 netttrinos generated at the end of the chain are observed whereas hardly any Be-7neutrinos generated at an internuediate stage of' this chain are seen. This almost rules out anastrophysical solution of the solar neutrino pvtzzle. The oraly apparent way to save the wholelogic of thermonuclear ch?rin reactions occtrring inside the stars is to invoke non-standard netmtrinophysics. In this work the Be/B neutrino flttx anounaly has been exatnined within the frarneworkof Resonant Spin Flavour Precession (RSFP) scezaario. It is f'ound that the survival probabilityfor electronic neutrinos in the RSFP scenario has .just the right dependence on neutrino energyto explain the Be-neutrino deficit for a stnitable range of transverse solar magnetic field.
社団法人日本物理学会の論文
1997-04-15