ar X iv : n uc l-ex / 0 20 50 06 v 1 1 4 M ay 2 00 2 FIRST RESULTS FROM THE SUDBURY NEUTRINO OBSERVATORY

Content Provider	Semantic Scholar
Author	McGregor, Graeme A.
Copyright Year	2002
Abstract	The Sudbury Neutrino Observatory (SNO) is a water imagingČerenkov detector. Utilising a 1 kilotonne ultra-pure D2O target, it is the first experiment to have equal sensitivity to all flavours of active neutrinos. This allows a solar-model independent test of the neutrino oscillation hypothesis to be made. Solar neutrinos from the decay of 8 B have been detected at SNO by the charged-current (CC) interaction on the deuteron and by the elastic scattering (ES) of electrons. While the CC interaction is sensitive exclusively to νe, the ES interaction has a small sensitivity to νµ and ντ. In this paper, the recent solar neutrino results from the SNO experiment are presented. The measured ES interaction rate is found to be consistent with the high precision ES measurement from the Super-Kamiokande experiment. The νe flux deduced from the CC interaction rate in SNO differs from the Super-Kamiokande ES measurement by 3.3σ. This is evidence of an active neutrino component, in addition to νe, in the solar neutrino flux. These results also allow the first experimental determination of the active 8 B neutrino flux from the Sun, and this is found to be in good agreement with solar model predictions.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://arxiv.org/pdf/nucl-ex/0205006v1.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article