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

  • B. Aharmim
  • , S. N. Ahmed
  • , T. C. Andersen
  • , A. E. Anthony
  • , N. Barros
  • , E. W. Beier
  • , A. Bellerive
  • , B. Beltran
  • , M. Bergevin
  • , S. D. Biller
  • , K. Boudjemline
  • , M. G. Boulay
  • , T. H. Burritt
  • , B. Cai
  • , Y. D. Chan
  • , M. Chen
  • , M. C. Chon
  • , B. T. Cleveland
  • , G. A. Cox-Mobrand
  • , C. A. Currat
  • X. Dai, F. Dalnoki-Veress, H. Deng, J. Detwiler, P. J. Doe, R. S. Dosanjh, G. Doucas, P. L. Drouin, F. A. Duncan, M. Dunford, S. R. Elliott, H. C. Evans, G. T. Ewan, J. Farine, H. Fergani, F. Fleurot, R. J. Ford, J. A. Formaggio, N. Gagnon, J. T.M. Goon, K. Graham, D. R. Grant, E. Guillian, S. Habib, R. L. Hahn, A. L. Hallin, E. D. Hallman, C. K. Hargrove, P. J. Harvey, R. Hazama, K. M. Heeger, W. J. Heintzelman, J. Heise, R. L. Helmer, R. J. Hemingway, R. Henning, A. Hime, C. Howard, M. A. Howe, M. Huang, B. Jamieson, N. A. Jelley, J. R. Klein, M. Kos, A. Krüger, C. Kraus, C. B. Krauss, T. Kutter, C. C.M. Kyba, R. Lange, J. Law, I. T. Lawson, K. T. Lesko, J. R. Leslie, I. Levine, J. C. Loach, S. Luoma, R. MacLellan, S. Majerus, H. B. Mak, J. Maneira, A. D. Marino, R. Martin, N. McCauley, A. B. McDonald, S. McGee, C. Mifflin, M. L. Miller, B. Monreal, J. Monroe, A. J. Noble, N. S. Oblath, C. E. Okada, H. M. O'Keeffe, Y. Opachich, G. D.Orebi Gann, S. M. Oser, R. A. Ott, S. J.M. Peeters, A. W.P. Poon, G. Prior, K. Rielage, B. C. Robertson, R. G.H. Robertson, E. Rollin, M. H. Schwendener, J. A. Secrest, S. R. Seibert, O. Simard, J. J. Simpson, D. Sinclair, P. Skensved, M. W.E. Smith, T. J. Sonley, T. D. Steiger, L. C. Stonehill, N. Tagg, G. Tešić, N. Tolich, T. Tsui, R. G.Van De Water, B. A. Vandevender, C. J. Virtue, D. Waller, C. E. Waltham, H. Wan Chan Tseung, D. L. Wark, P. Watson, J. Wendland, N. West, J. F. Wilkerson, J. R. Wilson, J. M. Wouters, A. Wright, M. Yeh, F. Zhang, K. Zuber
  • Laurentian University
  • Queen's University Kingston
  • University of Guelph
  • University of Texas at Austin
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • University of Pennsylvania
  • Carleton University
  • University of Alberta
  • Berkeley National Laboratory
  • University of Oxford
  • Los Alamos National Laboratory
  • University of Washington
  • Wells Fargo
  • Princeton University
  • SNOLAB
  • The University of Chicago
  • Massachusetts Institute of Technology
  • Louisiana State University
  • Case Western Reserve University
  • Brookhaven National Laboratory
  • Hiroshima University
  • University of Wisconsin–Madison
  • University of British Columbia
  • TRIUMF
  • University of North Carolina at Chapel Hill
  • Indiana University South Bend
  • University of Colorado Boulder
  • University of Liverpool
  • University of California at Santa Barbara
  • Remote Sensing Lab.
  • University of California, Davis
  • University of Sussex
  • CERN
  • University of Utah
  • Otterbein University
  • Imperial College London
  • Rutherford Appleton Laboratory
  • Technische Universität Dresden

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

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≤cos θzenith≤0.4 in a total exposure of 2.30×1014cm2s. 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 cos θzenith>0.4 is measured to be (3.31±0.01(stat)±0.09(sys))×10-10μ/s/cm2.

Original languageEnglish
Article number012001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume80
Issue number1
DOIs
StatePublished - Jul 10 2009

Scopus Subject Areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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