Constraints on neutrino parameters from neutral-current solar neutrino measurements

2003/09/11 by A. B. Balantekin, H. Yuksel, Hasan Yüksel
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Mixing (physics) #Neutral current #Neutrino #Neutrino Physics Research #Neutrino oscillation #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Solar neutrino #Solar neutrino problem #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.68.113002

published as Phys.Rev. D68 (2003) 113002 · 6 figures. Some typos are corrected, figures are visually improved

arxiv created 2003/09/11 · openalex publication_date 2003/12/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We generalize the pull approach to define the \ensuremathχ² function to the analysis of the data with correlated statistical errors. We apply this method to the analysis of the Sudbury Neutrino Collaboration data obtained in the salt phase. In the global analysis of all the solar neutrino and KamLAND data we find the best fit (minimum \ensuremathχ²) values of neutrino parameters to be tan²\ensuremathθ₁₂\ensuremath∼0.42 and \ensuremathδm₁₂²\ensuremath∼7.1\ifmmode×\else\texttimes\fi10^\ensuremath-5eV². We confirm that the maximal mixing is strongly disfavored while the bounds on \ensuremathδm₁₂² are significantly strengthened.

Citations

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• Constraints on axial two-body currents from solar neutrino data
• Neutrino-deuteron scattering in effective field theory at next-to-next-to-leading order
• Radiative corrections to low-energy neutrino reactions
• Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
• Measurement of the Rate ofνe+d→p+p+e−Interactions Produced byB<mml:mprescripts/>8Solar Neutrinos at the Sudbury Neutrino Observatory
• Solar Models: Current Epoch and Time Dependences, Neutrinos, and Helioseismological Properties