Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.111301
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Funding
- Canada: NSERC
- Industry Canada
- NRC
- Northern Ontario Heritage Fund
- Vale Inco
- AECL
- Ontario Power Generation
- HPCVL
- CFI
- CRC, Westgrid
- US: Department of Energy
- NERSC PDSF
- UK
- STFC (formerly PPARC)
- Portugal
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The Sudbury Neutrino Observatory (SNO) used an array of He-3 proportional counters to measure the rate of neutral-current interactions in heavy water and precisely determined the total active (nu(x)) B-8 solar neutrino flux. This technique is independent of previous methods employed by SNO. The total flux is found to be 5.54(-0.31)(+0.33)(stat)(-0.34)(+0.36)(syst) x 10(6) cm(-2) s(-1), in agreement with previous measurements and standard solar models. A global analysis of solar and reactor neutrino results yields Delta m(2) = 7.59(-0.21)(+0.19) x 10(-5) eV(2) and theta = 34.4(-1.2)(+1.3) degrees. The uncertainty on the mixing angle has been reduced from SNO's previous results.
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