Distinguishing magnetic moment from oscillation solutions of the solar neutrino problem with Borexino

Assuming that the observed deficit of solar neutrinos is due to the interaction of their transition magnetic moment with the solar magnetic field we derive the predictions for the forthcoming Borexino experiment. Three different model magnetic field profiles which give very good global fits of the c...

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Bibliographic Details
Published inPhysics letters. B Vol. 529; no. 3-4; pp. 193 - 198
Main Authors Akhmedov, E.Kh, Pulido, João
Format Journal Article
LanguageEnglish
Published Elsevier B.V 21.03.2002
Subjects
Neutrino magnetic moment
Solar neutrino problem
Solar neutrino problem
26.65.+t
Neutrino magnetic moment
14.60.Pq
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Summary:Assuming that the observed deficit of solar neutrinos is due to the interaction of their transition magnetic moment with the solar magnetic field we derive the predictions for the forthcoming Borexino experiment. Three different model magnetic field profiles which give very good global fits of the currently available solar neutrino data are used. The expected signal at Borexino is significantly lower than those predicted by the LMA, LOW and VO neutrino oscillation solutions of the solar neutrino problem. It is similar to that of the SMA oscillation solution which, however, is strongly disfavoured by the Super-Kamiokande data on day and night spectra and zenith angle distribution of the events. Thus, the neutrino magnetic moment solution of the solar neutrino problem can be unambiguously distinguished from the currently favoured oscillation solutions at Borexino.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(02)01254-6