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Determination of the νe and total B8 solar neutrino fluxes using the Sudbury Neutrino Observatory Phase I data set

Aharmim, B. and Ahmad, Q. and Ahmed, S. and Allen, R. and Andersen, T. and Anglin, J. and Bühler, G. and Barton, J. and Beier, E. and Bercovitch, M. and Bergevin, M. and Bigu, J. and Biller, S. and Black, R. and Blevis, I. and Boardman, R. and Boger, J. and Bonvin, E. and Boulay, M. and Bowler, M. and Bowles, T. and Brice, S. and Browne, M. and Bullard, T. and Burritt, T. and Cameron, J. and Chan, Y. and Chen, H. and Chen, M. and Chen, X. and Cleveland, B. and Cowan, J. and Cowen, D. and Cox, G. and Currat, C. and Dai, X. and Dalnoki-veress, F. and Davidson, W. and Deng, H. and Dimarco, M. and Doe, P. and Doucas, G. and Dragowsky, M. and Duba, C. and Duncan, F. and Dunford, M. and Dunmore, J. and Earle, E. and Elliott, S. and Evans, H. and Ewan, G. and Farine, J. and Fergani, H. and Ferraris, A. and Fleurot, F. and Ford, R. and Formaggio, J. and Fowler, M. and Frame, K. and Frank, E. and Frati, W. and Gagnon, N. and Germani, J. and Gil, S. and Goldschmidt, A. and Goon, J. and Graham, K. and Grant, D. and Guillian, E. and Hahn, R. and Hallin, A. and Hallman, E. and Hamer, A. and Hamian, A. and Handler, W. and Haq, R. and Hargrove, C. and Harvey, P. and Hazama, R. and Heeger, K. and Heintzelman, W. and Heise, J. and Helmer, R. and Henning, R. and Hepburn, J. and Heron, H. and Hewett, J. and Hime, A. and Howard, C. and Howe, M. and Huang, M. and Hykaway, J. and Isaac, M. and Jagam, P. and Jamieson, B. and Jelley, N. and Jillings, C. and Jonkmans, G. and Kazkaz, K. and Keener, P. and Kirch, K. and Klein, J. and Knox, A. and Komar, R. and Kormos, L. and Kos, M. and Kouzes, R. and Krüger, A. and Kraus, C. and Krauss, C. and Kutter, T. and Kyba, C. and Labranche, H. and Lange, R. and Law, J. and Lawson, I. and Lay, M. and Lee, H. and Lesko, K. and Leslie, J. and Levine, I. and Loach, J. and Locke, W. and Luoma, S. and Lyon, J. and Maclellan, R. and Majerus, S. and Mak, H. and Maneira, J. and Marino, A. and Martin, R. and Mccauley, N. and Mcdonald, A. and Mcdonald, D. and Mcfarlane, K. and Mcgee, S. and Mcgregor, G. and Drees, R. and Mes, H. and Mifflin, C. and Miknaitis, K. and Miller, M. and Milton, G. and Moffat, B. and Monreal, B. and Moorhead, M. and Morrissette, B. and Nally, C. and Neubauer, M. and Newcomer, F. and Ng, H. and Nickel, B. and Noble, A. and Norman, E. and Novikov, V. and Oblath, N. and Okada, C. and O'Keeffe, H. and Ollerhead, R. and Omori, M. and Orrell, J. and Oser, S. and Ott, R. and Peeters, S. and Poon, A. and Prior, G. and Reitzner, S. and Rielage, K. and Roberge, A. and Robertson, B. and Robertson, R. and Rosendahl, S. and Rowley, J. and Rusu, V. and Saettler, E. and Schülke, A. and Schwendener, M. and Secrest, J. and Seifert, H. and Shatkay, M. and Simpson, J. and Sims, C. and Sinclair, D. and Skensved, P. and Smith, A. and Smith, M. and Starinsky, N. and Steiger, T. and Stokstad, R. and Stonehill, L. and Storey, R. and Sur, B. and Tafirout, R. and Tagg, N. and Takeuchi, Y. and Tanner, N. and Taplin, R. and Thorman, M. and Thornewell, P. and Tolich, N. and Trent, P. and Tserkovnyak, Y. and Tsui, T. and Tunnell, C. and Berg, R. and Water, R. and Virtue, C. and Walker, T. and Wall, B. and Waltham, C. and Tseung, H. and Wang, J.-x. and Wark, D. and Wendland, J. and West, N. and Wilhelmy, J. and Wilkerson, J. and Wilson, J. and Wittich, P. and Wouters, J. and Wright, A. and Yeh, M. and Zuber, K. (2007) Determination of the νe and total B8 solar neutrino fluxes using the Sudbury Neutrino Observatory Phase I data set. Physical Review C, 75 (4). ISSN 0556-2813

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    Abstract

    This article provides the complete description of results from the Phase I data set of the Sudbury Neutrino Observatory (SNO). The Phase I data set is based on a 0.65 kiloton-year exposure of 2H2O (in the following denoted as D2O) to the solar B8 neutrino flux. Included here are details of the SNO physics and detector model, evaluations of systematic uncertainties, and estimates of backgrounds. Also discussed are SNO's approach to statistical extraction of the signals from the three neutrino reactions (charged current, neutral current, and elastic scattering) and the results of a search for a day-night asymmetry in the νe flux. Under the assumption that the B8 spectrum is undistorted, the measurements from this phase yield a solar νe flux of ϕ(νe)=1.76+0.05−0.05(stat.)+0.09−0.09(syst.)×106 cm−2 s−1 and a non-νe component of ϕ(νμτ)=3.41+0.45−0.45(stat.)+0.48−0.45(syst.)×106 cm−2 s−1. The sum of these components provides a total flux in excellent agreement with the predictions of standard solar models. The day-night asymmetry in the νe flux is found to be Ae=7.0±4.9(stat.)+1.3−1.2%(syst.), when the asymmetry in the total flux is constrained to be zero.

    Item Type: Article
    Journal or Publication Title: Physical Review C
    Additional Information: © 2007 The American Physical Society
    Subjects:
    Departments: Faculty of Science and Technology > Physics
    ID Code: 69613
    Deposited By: ep_importer_pure
    Deposited On: 12 Jun 2014 14:30
    Refereed?: Yes
    Published?: Published
    Last Modified: 21 Sep 2017 06:07
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/69613

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