Measurement of the Rate of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mi>e</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi/><mml:mo>+</mml:mo><mml:mi/><mml:mi mathvariant="italic">d</mml:mi><mml:mi/><mml:mo>→</mml:mo><mml:mi/><mml:mi mathvariant="italic">p</mml:mi><mml:mi/><mml:mo>+</mml:mo><mml:mi/><mml:mi mathvariant="italic">p</mml:mi><mml:mi/><mml:mo>+</mml:mo><mml:mi/><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Interactions Produced by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>8</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>Solar Neutrinos at the Sudbury Neutrino Observatory

Rushdy Ahmad(University of Washington), R. C. Allen(University of California, Irvine), Thomas Andersen(University of Guelph), J. D. Anglin(National Research Council Canada), G. Bühler(University of California, Irvine), J. C. Barton(University of Oxford), E. W. Beier(University of Pennsylvania), M. Bercovitch(National Research Council Canada), J. Bigu(Laurentian University), S. D. Biller(University of Oxford), R. A. Black(University of Oxford), I. Blevis(Carleton University), R. J. Boardman(University of Oxford), J. Boger(Brookhaven National Laboratory), E. Bonvin(Queen's University), M. G. Boulay(Queen's University), M. G. Bowler(University of Oxford), T. J. Bowles(Los Alamos National Laboratory), S. J. Brice(Los Alamos National Laboratory), M. C. Browne(University of Washington), T. V. Bullard(University of Washington), T. H. Burritt(Los Alamos National Laboratory), K. Cameron(University of Guelph), J. Cameron(University of Oxford), Y. D. Chan(Lawrence Berkeley National Laboratory), M. Chen(Queen's University), H. H. Chen(University of California, Irvine), X. Chen(Lawrence Berkeley National Laboratory), M. C. Chon(University of Guelph), B. T. Cleveland(University of Oxford), E. T. H. Clifford(Queen's University), J.H.M. Cowan(Laurentian University), D. F. Cowen(University of Pennsylvania), G. A. Cox(University of Washington), Ye Dai(Queen's University), X. Dai(University of Oxford), F. Dalnoki‐Veress(Carleton University), W.F. Davidson(National Research Council Canada), P. J. Doe(Los Alamos National Laboratory), G. Doucas(University of Oxford), M. R. Dragowsky(Los Alamos National Laboratory), C. A. Duba(University of Washington), F. A. Duncan(Queen's University), J. Dunmore(University of Oxford), E. D. Earle(Queen's University), S. R. Elliott(Los Alamos National Laboratory), H. C. Evans(Queen's University), G. T. Ewan(Queen's University), J. Farine(Carleton University), H. Fergani(University of Oxford), A. P. Ferraris(University of Oxford), R. Ford(Queen's University), M. M. Fowler(Los Alamos National Laboratory), K. C. Frame(University of Oxford), E.D. Frank(University of Pennsylvania), W. Frati(University of Pennsylvania), J. V. Germani(Los Alamos National Laboratory), Salvador Gil(University of British Columbia), A. Goldschmidt(Los Alamos National Laboratory), D. R. Grant(Carleton University), R. L. Hahn(Brookhaven National Laboratory), A. L. Hallin(Queen's University), E. D. Hallman(Laurentian University), A. Hamer(Los Alamos National Laboratory), A. A. Hamian(University of Washington), Rizwan Haq(Laurentian University), C. K. Hargrove(Carleton University), P. J. Harvey(Queen's University), R. Hazama(University of Washington), R. Heaton(Queen's University), K. M. Heeger(University of Washington), W. J. Heintzelman(University of Pennsylvania), J. Heise(University of British Columbia), R. L. Helmer(University of British Columbia), J. D. Hepburn(Queen's University), H. Heron(University of Oxford), JoAnne L. Hewett(Laurentian University), A. Hime(Los Alamos National Laboratory), M. Howe(University of Washington), J. G. Hykawy(Laurentian University), M. C. Perillo Isaac(Lawrence Berkeley National Laboratory), P. Jagam(University of Guelph), N.A. Jelley(University of Oxford), C. Jillings(Queen's University), G. Jonkmans(Laurentian University), J. Karn(University of Guelph), P. Keener(University of Pennsylvania), K. Kirch(Los Alamos National Laboratory), J. R. Klein(University of Pennsylvania), A. Knox(University of Oxford), R. J. Komar(University of British Columbia), R. T. Kouzes(Princeton University), T. Kutter(University of British Columbia), Christopher C. M. Kyba(University of Pennsylvania), J. Law(University of Guelph), I. Lawson(University of Guelph), M. Lay(University of Oxford), H. W. Lee(Queen's University), K. T. Lesko(Lawrence Berkeley National Laboratory), J. R. Leslie(Queen's University), I. Levine(Carleton University), W. Locke(University of Oxford), M. M. Lowry(Princeton University), S. Luoma(Laurentian University), J. Lyon(University of Oxford), Steve Majerus(University of Oxford), H.‐B. Mak(Queen's University), A. D. Marino(Lawrence Berkeley National Laboratory), N. McCauley(University of Oxford), A. B. McDonald(Princeton University), D. S. McDonald(University of Pennsylvania), K. W. McFarlane(Carleton University), G. McGregor(University of Oxford), W. McLatchie(Queen's University), R. Meijer Drees(University of Washington), H. Mes(Carleton University), C. Mifflin(Carleton University), Guthrie Miller(Los Alamos National Laboratory), G.M. Milton(Atomic Energy (Canada)), B. A. Moffat(Queen's University), M. Moorhead(Lawrence Berkeley National Laboratory), C. W. Nally(University of British Columbia), M. S. Neubauer(University of Pennsylvania), F. M. Newcomer(University of Pennsylvania), Huah Shin Ng(University of British Columbia), A. J. Noble(Carleton University), E. B. Norman(Lawrence Berkeley National Laboratory), В. М. Новіков(Carleton University), M. O'Neill(Carleton University), C. Okada(Lawrence Berkeley National Laboratory), R. W. Ollerhead(University of Guelph), M. Omori(University of Oxford), J. L. Orrell(University of Washington), S. M. Oser(University of Pennsylvania), A. W. P. Poon(Los Alamos National Laboratory), T. J. Radcliffe(Queen's University), A. Roberge(Laurentian University), B.C. Robertson(Queen's University), R. G. H. Robertson(Los Alamos National Laboratory), J.K. Rowley(Brookhaven National Laboratory), Vadim Rusu(University of Pennsylvania), E. Saettler(Laurentian University), K. K. Schaffer(University of Washington), A. Schuelke(Lawrence Berkeley National Laboratory), M. H. Schwendener(Laurentian University), H. Seifert(Los Alamos National Laboratory), M. Shatkay(Carleton University), J. J. Simpson(University of Guelph), D. Sinclair(Carleton University), P. Skensved(Queen's University), A. R. Smith(Lawrence Berkeley National Laboratory), M. W. E. Smith(University of Washington), N. Starinsky(Carleton University), T. D. Steiger(University of Washington), R. G. Stokstad(Lawrence Berkeley National Laboratory), R. S. Storey(National Research Council Canada), B. Sur(Queen's University), R. Tafirout(Laurentian University), N. Tagg(University of Guelph), N.W. Tanner(University of Oxford), R. K. Taplin(University of Oxford), M. Thorman(University of Oxford), P. M. Thornewell(Los Alamos National Laboratory), P.T. Trent(University of Oxford), Yaroslav Tserkovnyak(University of British Columbia), R. Van Berg(University of Pennsylvania), R. G. Van de Water(Los Alamos National Laboratory), C. J. Virtue(Laurentian University), Chris Waltham(University of British Columbia), J.-X. Wang(University of Guelph), D. L. Wark(Los Alamos National Laboratory), N. West(University of Oxford), J.B. Wilhelmy(Los Alamos National Laboratory), J. F. Wilkerson(Los Alamos National Laboratory), J. R. Wilson(University of Oxford), P. Wittich(University of Pennsylvania), J.M. Wouters(Los Alamos National Laboratory), M. Yeh(Brookhaven National Laboratory)
Physical Review Letters
July 25, 2001
10.1103/physrevlett.87.071301
Cited by 1,938Open Access
Full Text

Abstract

Solar neutrinos from ${}^{8}\mathrm{B}$ decay have been detected at the Sudbury Neutrino Observatory via the charged current (CC) reaction on deuterium and the elastic scattering (ES) of electrons. The flux of ${\ensuremath{\nu}}_{e}$'s is measured by the CC reaction rate to be ${\ensuremath{\varphi}}^{\mathrm{CC}}({\ensuremath{\nu}}_{e})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.75\ifmmode\pm\else\textpm\fi{}0.07(\mathrm{stat}{)}_{\ensuremath{-}0.11}^{+0.12}(\mathrm{syst})\ifmmode\pm\else\textpm\fi{}0.05(\mathrm{theor})\ifmmode\times\else\texttimes\fi{}{10}^{6}{\mathrm{cm}}^{\ensuremath{-}2}{\mathrm{s}}^{\ensuremath{-}1}$. Comparison of ${\ensuremath{\varphi}}^{\mathrm{CC}}({\ensuremath{\nu}}_{e})$ to the Super-Kamiokande Collaboration's precision value of the flux inferred from the ES reaction yields a $3.3\ensuremath{\sigma}$ difference, assuming the systematic uncertainties are normally distributed, providing evidence of an active non- ${\ensuremath{\nu}}_{e}$ component in the solar flux. The total flux of active ${}^{8}\mathrm{B}$ neutrinos is determined to be $5.44\ifmmode\pm\else\textpm\fi{}0.99\ifmmode\times\else\texttimes\fi{}{10}^{6}{\mathrm{cm}}^{\ensuremath{-}2}{\mathrm{s}}^{\ensuremath{-}1}$.

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