Physics – High Energy Physics
Scientific paper
Jun 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..672..126y&link_type=abstract
SHORT DISTANCE BEHAVIOR OF FUNDAMENTAL INTERATIONS: 31st Coral Gables Conference on High Energy Physics and Cosmology. AIP Conf
Physics
High Energy Physics
Neutrino Mass And Mixing
Scientific paper
Solar Neutrinos from the decay of 8B have been detected at the Sudbury Neutrino Observatory (SNO) by charged current (CC) and neutral current (NC) interactions on deuterium and elastic scattering (ES) of electrons. The SNO data indicate that with the assumption of undistorted 8B shape, the flux for ve is φe = 1.76-0.05+0.05 (stat.)-0.09+0.09 (syst.) × 106 cm-2s-1 for a kinetic energy threshold of 5 MeV. The non-ve flux is fgr μτ = 3.41-0.45+0.45 (stat.)-0.45+0.45 (syst.) × 106 cm-2s-1. This provides strong evidence for solar ve flavor transformation. The day and night solar neutrino energy spectra and rates have also been measured. For CC events, the ve asymmetry is 14.0% +/- 6.3% -1.4+1.5 %. By additionally constraining the total (NC) flux of active neutrinos to have no asymmetry, the ve asymmetry becomes 7.0% +/- 4.9% -1.2+1.3 %. A global solar neutrino analysis strongly favors the Large Mixing Angle (LMA) solution in a two-flavor neutrino oscillation model.
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