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Measurement of the cosmic ray and neutrino-induced muon flux at the Sudbury neutrino observatory

Aharmim, B. and Ahmed, S. and Andersen, T. and Anthony, A. and Barros, N. and Beier, E. and Bellerive, A. and Beltran, B. and Bergevin, M. and Biller, S. and Boudjemline, K. and Boulay, M. and Burritt, T. and Cai, B. and Chan, Y. and Chen, M. and Chon, M. and Cleveland, B. and Cox-mobrand, G. and Currat, C. and Dai, X. and Dalnoki-veress, F. and Deng, H. and Detwiler, J. and Doe, P. and Dosanjh, R. and Doucas, G. and Drouin, P.-l. and Duncan, F. and Dunford, M. and Elliott, S. and Evans, H. and Ewan, G. and Farine, J. and Fergani, H. and Fleurot, F. and Ford, R. and Formaggio, J. and Gagnon, N. and Goon, J. and Graham, K. and Grant, D. and Guillian, E. and Habib, S. and Hahn, R. and Hallin, A. and Hallman, E. and Hargrove, C. and Harvey, P. and Hazama, R. and Heeger, K. and Heintzelman, W. and Heise, J. and Helmer, R. and Hemingway, R. and Henning, R. and Hime, A. and Howard, C. and Howe, M. and Huang, M. and Jamieson, B. and Jelley, N. and Klein, J. and Kos, M. and Krüger, A. and Kraus, C. and Krauss, C. and Kutter, T. and Kyba, C. and Lange, R. and Law, J. and Lawson, I. and Lesko, K. and Leslie, J. and Levine, I. and Loach, J. and Luoma, S. 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 Mcgee, S. and Mifflin, C. and Miller, M. and Monreal, B. and Monroe, J. and Noble, A. and Oblath, N. and Okada, C. and O'Keeffe, Helen and Opachich, Y. and Gann, G. and Oser, S. and Ott, R. and Peeters, S. and Poon, A. and Prior, G. and Rielage, K. and Robertson, B. and Robertson, R. and Rollin, E. and Schwendener, M. and Secrest, J. and Seibert, S. and Simard, O. and Simpson, J. and Sinclair, D. and Skensved, P. and Smith, M. and Sonley, T. and Steiger, T. and Stonehill, L. and Tagg, N. and Tešić, G. and Tolich, N. and Tsui, T. and De Water, R. and Vandevender, B. and Virtue, C. and Waller, D. and Waltham, C. and Tseung, H. and Wark, D. and Watson, P. and Wendland, J. and West, N. and Wilkerson, J. and Wilson, J. and Wouters, J. and Wright, A. and Yeh, M. and Zhang, F. and Zuber, K. (2009) Measurement of the cosmic ray and neutrino-induced muon flux at the Sudbury neutrino observatory. Physical Review D, 80 (1). ISSN 1550-7998

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    Abstract

    Results are reported on the measurement of the atmospheric neutrino-induced muon flux at a depth of 2 kilometers below the Earth’s surface from 1229 days of operation of the Sudbury Neutrino Observatory (SNO). By measuring the flux of through-going muons as a function of zenith angle, the SNO experiment can distinguish between the oscillated and unoscillated portion of the neutrino flux. A total of 514 muonlike events are measured between −1≤cosθzenith≤0.4 in a total exposure of 2.30×1014 cm2 s. The measured flux normalization is 1.22±0.09 times the Bartol three-dimensional flux prediction. This is the first measurement of the neutrino-induced flux where neutrino oscillations are minimized. The zenith distribution is consistent with previously measured atmospheric neutrino oscillation parameters. The cosmic ray muon flux at SNO with zenith angle cosθzenith>0.4 is measured to be (3.31±0.01(stat)±0.09(sys))×10−10 μ/s/cm2.

    Item Type: Article
    Journal or Publication Title: Physical Review D
    Additional Information: © 2009 The American Physical Society
    Subjects:
    Departments: Faculty of Science and Technology > Physics
    ID Code: 69616
    Deposited By: ep_importer_pure
    Deposited On: 12 Jun 2014 14:33
    Refereed?: Yes
    Published?: Published
    Last Modified: 17 Nov 2017 11:43
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/69616

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