Measurement of the total active8B solar neutrino flux at the Sudbury Neutrino Observatory with enhanced neutral current sensitivity

S. N. Ahmed, A. E. Anthony, E. W. Beier, A. Bellerive, S. D. Biller, J. Boger, M. G. Boulay, M. G. Bowler, T. J. Bowles, S. J. Brice, T. V. Bullard, Y. D. Chan, M. Chen, X. Chen, B. T. Cleveland, G. A. Cox, X. Dai, F. Dalnoki-Veress, P. J. Doe, R. S. DosanjhG. Doucas, M. R. Dragowsky, C. A. Duba, F. A. Duncan, M. Dunford, J. A. Dunmore, E. D. Earle, S. R. Elliott, H. C. Evans, G. T. Ewan, J. Farine, H. Fergani, F. Fleurot, J. A. Formaggio, M. M. Fowler, K. Frame, B. G. Fulsom, N. Gagnon, K. Graham, D. R. Grant, R. L. Hahn, J. C. Hall, A. L. Hallin, E. D. Hallman, A. S. Hamer, W. B. Handler, C. K. Hargrove, P. J. Harvey, R. Hazama, K. M. Heeger, W. J. Heintzelman, J. Heise, R. L. Helmer, R. J. Hemingway, A. Hime, M. A. Howe, P. Jagam, N. A. Jelley, J. R. Klein, M. S. Kos, A. V. Krumins, T. Kutter, C. C.M. Kyba, H. Labranche, R. Lange, J. Law, I. T. Lawson, K. T. Lesko, J. R. Leslie, I. Levine, S. Luoma, R. MacLellan, S. Majerus, H. B. Mak, J. Maneira, A. D. Marino, N. McCauley, A. B. McDonald, S. McGee, G. McGregor, C. Mifflin, K. K.S. Miknaitis, G. G. Miller, B. A. Moffat, C. W. Nally, B. G. Nickel, A. J. Noble, E. B. Norman, N. S. Oblath, C. E. Okada, R. W. Ollerhead, J. L. Orrell, S. M. Oser, C. Ouellet, S. J.M. Peeters, A. W.P. Poon, B. C. Robertson, R. G.H. Robertson, E. Rollin, S. S.E. Rosendahl, V. L. Rusu, M. H. Schwendener, O. Simard, J. J. Simpson, C. J. Sims, D. Sinclair, P. Skensved, M. W.E. Smith, N. Starinsky, R. G. Stokstad, L. C. Stonehill, R. Tafirout, Y. Takeuchi, G. Tešić, M. Thomson, M. Thorman, R. van Berg, R. G. van de Water, C. J. Virtue, B. L. Wall, D. Waller, C. E. Waltham, H. Wan Chan Tseung, D. L. Wark, N. West, J. B. Wilhelmy, J. F. Wilkerson, J. R. Wilson, J. M. Wouters, M. Yeh, K. Zuber

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744 Scopus citations


The measurements performed for determining the total active 8B solar neutrino flux at the Sudbury Neutrino Observatory (SNO) were investigated. The measurements were performed without assumptions about the energy dependence of the survival probability. NaCl dissolved in heavy water was used for making the measurements in order to enhance the sensitivity and signature for neutral-current interactions. The hypothesis of maximal mixing at a confidence level equivalent to 5.4σ was found to be inappropriate by the combined results of global solar and neutrino.

Original languageEnglish
Article number181301
Pages (from-to)181301-1-181301-6
JournalPhysical Review Letters
Issue number18
StatePublished - May 7 2004

Bibliographical note

Funding Information:
This research was supported in Canada by NSERC, Industry Canada, NRC, Northern Ontario Heritage ?>Fund, Inco, AECL, Ontario Power Generation, HPCVL, CFI, in the U.S. by the DOE, and in the ?>U.K. by PPARC. We thank the SNO technical staff ?>for their strong contributions.

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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