Global oscillation analysis of solar neutrino data with helioseismically constrained fluxes

Abstract

A seismic model for the Sun calculated using the accurate helioseismic data predicts a lower ${}^{8}B$ neutrino flux as compared to the standard solar model (SSM). However, there persists a discrepancy between the predicted and measured neutrino fluxes and it seems necessary to invoke neutrino oscillations to explain the measurements. In this work, we have performed a global, unified oscillation analysis of the latest solar neutrino data (including the results of SNO charged current rate) using the seismic model fluxes as theoretical predictions. We determine the best-fit values of the neutrino oscillation parameters and the ${\chi }_{\mathrm{m}in}^2$ for both ${\nu }_e-{\nu }_{\mathrm{a}ctive}$ and ${\nu }_e-{\nu }_{\mathrm{s}terile}$ cases and present the allowed parameter regions in the $\Delta m^2-{\tan }^2\theta$ plane for ${\nu }_e-{\nu }_{\mathrm{a}ctive}$ transition. The results are compared with those obtained using the latest SSM by Bahcall and his collaborators.

Version to appear in Phys. Rev. D

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Cited by in corpus (8)

• Solar models and solar neutrino oscillations
• Global Seismology of the Sun
• Implications of the first neutral current data from SNO for Solar Neutrino Oscillation
• Neutrino decay confronts the SNO data
• Our Sun. IV. The Standard Model and Helioseismology: Consequences of Uncertainties in Input Physics and in Observed Solar Parameters
• Three Generation Neutrino Oscillation Parameters after SNO
• Energy Independent Solution to the Solar Neutrino Anomaly including the SNO data
• SNO and the solar neutrino problem