Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
Physical Review Letters 89 (2002) 011302 5pp
VERITAS: The Very Energetic Radiation Imaging Telescope Array System
Astroparticle Physics 17:2 (2002) 221-243
Abstract:
The Very Energetic Radiation Imaging Telescope Array System (VERITAS) represents an important step forward in the study of extreme astrophysical processes in the universe. It combines the power of the atmospheric Cherenkov imaging technique using a large optical reflector with the power of stereoscopic observatories using arrays of separated telescopes looking at the same shower. The seven identical telescopes in VERITAS, each of aperture 10 m, will be deployed in a filled hexagonal pattern of side 80 m; each telescope will have a camera consisting of 499 pixels with a field of view of 3.5°. VERITAS will substantially increase the catalog of very high energy (E > 100 GeV) γ-ray sources and greatly improve measurements of established sources. © 2002 Elsevier Science B.V. All rights reserved.Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
Physical Review Letters 89:1 (2002)
Abstract:
Observations of neutral-current [Formula presented] interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using the neutral current (NC), elastic scattering, and charged current reactions and assuming the standard [Formula presented] shape, the [Formula presented] component of the [Formula presented] solar flux is [Formula presented] for a kinetic energy threshold of 5 MeV. The non- [Formula presented] component is [Formula presented], [Formula presented] greater than zero, providing strong evidence for solar [Formula presented] flavor transformation. The total flux measured with the NC reaction is [Formula presented], consistent with solar models. © 2002 The American Physical Society.Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
Physical Review Letters 89:1 (2002)
Abstract:
The Sudbury Neutrino Observatory (SNO) has measured day and night solar neutrino energy spectra and rates. For charged current events, assuming an undistorted [Formula presented] spectrum, the night minus day rate is [Formula presented] of the average rate. If the total flux of active neutrinos is additionally constrained to have no asymmetry, the [Formula presented] asymmetry is found to be [Formula presented]. A global solar neutrino analysis in terms of matter-enhanced oscillations of two active flavors strongly favors the large mixing angle solution. © 2002 The American Physical Society.Measurement of CC interactions produced by ${}^8$B solar neutrinos at SNO
Sissa Medialab Srl (2001) 186