Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001neph.conf...85s&link_type=abstract
NEUTRINO PHYSICS Its Impact on Particle Physics, Astrophysics and Cosmology. Proceedings of the Carolina Symposium on Neutrino P
Astronomy and Astrophysics
Astrophysics
Scientific paper
The Sudbury Neutrino Observatory (SNO) is a large, underground heavywater Cerenkov detector which has been designed and built primarily to solve the solar neutrino problem, the shortfall in the flux of neutrinos coming from the sun relative to the best solar model predictions. As discussed in previous talks in this symposium, the neutrino flux shortfall occurs in all previous experiments which were sensitive to different energy thresholds for solar neutrinos - the gallium experiments, the chlorine experiment, and the water Cerenkov experiments. And furthermore, the shortfall seems to be a result which is independent of physicallyplausible changes in the standard solar model, changes which are consistent with helioseismological results. Because it seems to be impossible to modify the standard solar model to account for all aspects of the neutrino flux shortfall, the explanation would seem to be connected to properties of neutrinos. The favored explanation, discussed previously in this symposium by Bahcall, is neutrino-flavour oscillations; this explanation has already been successfully invoked to explain the results on atmosphere muon neutrinos obtained by Superamiokande (see H. Sobel, this symposium)...
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