Abstract
The combined effect of spin-flavor precession (SFP) and the nonstandard neutrino interaction (NSI) on the survival probability of solar electron neutrinos (assumed to be Dirac particles) is examined for various values ofϵ11,ϵ12, andμB. It is found that the neutrino survival probability curves affected by SFP and NSI effects individually for some values of the parameters (ϵ11,ϵ12, andμB) get close to the standard MSW curve when both effects are combined. Therefore, the combined effect of SFP and NSI needs to be taken into account when the solar electron neutrino data obtained by low energy solar neutrino experiments is investigated.
Highlights
After first observation of the solar neutrino oscillation in Homestake neutrino experiment, serious solar, atmospheric, and reactor neutrino experiments were established to confirm it during the last decades
The combined effect of nonstandard neutrino interactions (NSI) and spin-flavor precession (SFP) is examined in the case of two neutrino generations by assuming that the neutrinos are of Dirac type
Electron neutrino survival probabilities plotted as a function of neutrino energy are shown in Figure 2 for all situations: MSW-large mixing angle (LMA) prediction alone, SFP alone, MSW-LMA + NSI, and SFP + NSI
Summary
After first observation of the solar neutrino oscillation in Homestake neutrino experiment, serious solar, atmospheric, and reactor neutrino experiments were established to confirm it during the last decades. The combined effect of the matter and the magnetic field called as spin-flavor precession (SFP) can change left-handed electron neutrino to another right-handed neutrino.
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