Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-12-06
Astropart.Phys.18:173-181,2002
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex, 16 pages, 3 figures
Scientific paper
10.1016/S0927-6505(02)00106-8
A statistical analysis of the solar neutrino data is presented assuming the solar neutrino deficit to be resolved by the resonant interaction of the neutrino magnetic moment with the solar magnetic field. Four field profiles are investigated, all exhibiting a rapid increase across the bottom of the convective zone, one of them closely following the requirements from recent solar physics investigations. First a 'rates only' analysis is performed whose best fits appear to be remarkably better than all fits from oscillations. A global analysis then follows with the corresponding best fits of a comparable quality to the LMA one. Despite the fact that the resonant spin flavour precession does not predict any day/night effect, the separate SuperKamiokande day and night data are included in the analysis in order to allow for a direct comparison with oscillation scenarios. Remarkably enough, the best fit for rates and global analysis which is compatible with most astrophysical bounds on the neutrino magnetic moment is obtained from the profile which most closely follows solar physics requirements. Allowing for a peak field value of $3\times10^5G$, it is found in this case that $\Delta m^2_{21}=1.45\times10^{-8}eV^2$, $\mu_{\nu}=3.2\times10^{-12}\mu_{B}$ (65%CL). The new forthcoming experiments on solar neutrino physics (Kamland and Borexino) will be essential to ascertain whether this fact is incidental or essential.
No associations
LandOfFree
Solar Neutrinos with Magnetic Moment: Rates and Global Analysis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solar Neutrinos with Magnetic Moment: Rates and Global Analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar Neutrinos with Magnetic Moment: Rates and Global Analysis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-326012