Are there nu_mu or nu_tau in the flux of solar neutrinos on earth?

Abstract

Using the model independent method of Villante, Fiorentini, Lisi, Fogli, Palazzo, and the rates measured in the SNO and Super-Kamiokande solar neutrino experiment, we calculate the amount of active nu_mu or nu_tau present in the flux of solar neutrinos on Earth. We show that the probability of nu_e->nu_{mu,tau} transitions is larger than zero at 99.89% CL. We find that the averaged flux of nu_{mu,tau} on Earth is larger than 0.17 times the 8B nu_e flux predicted by the BP2000 Standard Solar Model at 99% CL. We discuss also the consequences of possible nu_e->anti-nu_{mu,tau} or nu_e->anti-nu_e transitions of solar neutrinos. We derive a model-independent lower limit of 0.52 at 99% CL for the ratio of the 8B nu_e flux produced in the Sun and its value in the BP2000 Standard Solar Model.

5 pages. Added discussion on possible nu_e->anti-nu_{mu,tau} or nu_e->anti-nu_e transitions

References in corpus (4)

• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Solar 8B and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data
• Model-dependent and independent implications of the first Sudbury Neutrino Observatory results
• Solar neutrino event spectra: Tuning SNO to equalize Super-Kamiokande

Cited by in corpus (11)

• Neutrino Wave Packets in Quantum Field Theory
• Global Analysis with SNO: Toward the Solution of the Solar Neutrino Problem
• Global Analysis of the post-SNO Solar Neutrino Data for Standard and Non-Standard Oscillation Mechanisms
• Robust signatures of solar neutrino oscillation solutions
• If sterile neutrinos exist, how can one determine the total solar neutrino fluxes?
• Three Generation Neutrino Oscillation Parameters after SNO
• Model Independent Information On Solar Neutrino Oscillations
• A new solution to the solar neutrino deficit
• What can the SNO Neutral Current Rate teach us about the Solar Neutrino Anomaly
• Exact analysis of the combined data of SNO and Super-Kamiokande
• The solar neutrino spectrum derived from electron scattering and charged current interactions