6533b836fe1ef96bd12a0968

RESEARCH PRODUCT

Solar Neutrinos Before and After KamLAND

M. C. Gonzalez-garciaCarlos Pena-garayJohn N. Bahcall

subject

Nuclear and High Energy PhysicsSterile neutrinoParticle physicsNuclear TheorySolar neutrinoAstrophysics::High Energy Astrophysical PhenomenaFluxFOS: Physical sciencesAstrophysics01 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear Theory (nucl-th)High Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentParticle Physics - PhenomenologyPhysicsStandard solar model010308 nuclear & particles physicsOscillationAstrophysics (astro-ph)SigmaHigh Energy Physics - PhenomenologyOrders of magnitude (time)13. Climate actionAstronomiaHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary AstrophysicsNeutrino

description

We use the recently reported KamLAND measurements on oscillations of reactor anti-neutrinos, together with the data of previously reported solar neutrino experiments, to show that: (1) the total 8B neutrino flux emitted by the Sun is 1.00(1.0 \pm 0.06) of the standard solar model (BP00) predicted flux, (2) the KamLAND measurements reduce the area of the globally allowed oscillation regions that must be explored in model fitting by six orders of magnitude in the Delta m^2-tan^2 theta plane, (3) LMA is now the unique oscillation solution to a CL of 4.7sigma, (4) maximal mixing is disfavored at 3.1 sigma, (5) active-sterile admixtures are constrained to sin^2 eta<0.13 at 1 sigma, (6) the observed ^8B flux that is in the form of sterile neutrinos is 0.00^{+0.09}_{-0.00} (1 sigma), of the standard solar model (BP00) predicted flux, and (7) non-standard solar models that were invented to completely avoid solar neutrino oscillations are excluded by KamLAND plus solar at 7.9 sigma . We also refine quantitative predictions for future 7Be and p-p solar neutrino experiments.

10.1088/1126-6708/2003/02/009http://cds.cern.ch/record/596328