1. Measurement of the Total ActiveB8Solar Neutrino Flux at the Sudbury Neutrino Observatory with Enhanced Neutral Current Sensitivity
- Author
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R. L. Helmer, P. J. Doe, R. L. Hahn, Monica Dunford, A. W. P. Poon, R. MacLellan, S. R. Elliott, R. W. Ollerhead, E. D. Hallman, G. T. Ewan, J. Maneira, I. T. Lawson, W. B. Handler, Y. Takeuchi, J. F. Wilkerson, J. Boger, J. J. Simpson, D. Waller, Reda Tafirout, Darren Grant, Christopher C. M. Kyba, Yuen-Dat Chan, B. L. Wall, C. K. Hargrove, P. Skensved, C. E. Okada, David A. Sinclair, G. A. Cox, Eric B. Norman, F. A. Duncan, R. S. Dosanjh, B. A. Moffat, K. Graham, E. Rollin, J. R. Leslie, M. W.E. Smith, B. T. Cleveland, J. M. Wouters, R. G. Stokstad, Chris Waltham, M. A. Howe, Malcolm M. Fowler, C. Ouellet, S. M. Oser, H. Fergani, Guthrie Miller, J. A. Dunmore, J. Farine, A. J. Noble, X. Chen, X. Dai, G. Tešić, N. West, A. V. Krumins, R. Lange, S. J. M. Peeters, V. L. Rusu, K.K.S. Miknaitis, W. J. Heintzelman, M.G. Boulay, S. J. Brice, A. S. Hamer, K. T. Lesko, G. McGregor, A. L. Hallin, J. R. Wilson, C. Mifflin, T. V. Bullard, R. J. Hemingway, S. McGee, M. Kos, E. D. Earle, S. D. Biller, Bernie G. Nickel, H. Wan Chan Tseung, I. Levine, N. S. Oblath, E. W. Beier, C. A. Duba, H. Labranche, A. B. McDonald, D. L. Wark, M. R. Dragowsky, F. Dalnoki-Veress, M. H. Schwendener, M. G. Bowler, A. D. Marino, B. G. Fulsom, J. C. Hall, J. Law, R. G. H. Robertson, C. J. Sims, Kai Zuber, C. W. Nally, Andrew Hime, B. C. Robertson, G. Doucas, J. B. Wilhelmy, T. Kutter, C. J. Virtue, N. Gagnon, John L. Orrell, L. C. Stonehill, S. N. Ahmed, R. Hazama, T. J. Bowles, Joseph A. Formaggio, N. McCauley, Minfang Yeh, N. A. Jelley, M. Thorman, R. Van Berg, O. Simard, Hal Evans, K. Frame, Alain Bellerive, K. M. Heeger, M. L. Chen, M. A. Thomson, J. Heise, F. Fleurot, A. E. Anthony, S. Luoma, P. Jagam, Joshua R. Klein, R. G. Van de Water, N. Starinsky, H. B. Mak, S. S.E. Rosendahl, P. J. Harvey, and S. Majerus
- Subjects
Physics ,Particle physics ,Sudbury Neutrino Observatory ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Solar neutrino ,General Physics and Astronomy ,Flux ,Cosmic ray ,7. Clean energy ,01 natural sciences ,Nuclear physics ,Neutrino detector ,13. Climate action ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,010306 general physics ,Neutrino oscillation ,Astrophysics::Galaxy Astrophysics ,Lepton - Abstract
The Sudbury Neutrino Observatory has precisely determined the total active (nu(x)) B-8 solar neutrino flux without assumptions about the energy dependence of the nu(e) survival probability. The measurements were made with dissolved NaCl in heavy water to enhance the sensitivity and signature for neutral-current interactions. The flux is found to be 5.21+/-0.27(stat)+/-0.38(syst)x10(6) cm(-2) s(-1), in agreement with previous measurements and standard solar models. A global analysis of these and other solar and reactor neutrino results yields Deltam(2)=7.1(-0.6)(+1.2)x10(-5) eV(2) and theta= 32.5(-2.3)(+2.4) degrees. Maximal mixing is rejected at the equivalent of 5.4 standard deviations.
- Published
- 2004