Measurement of the Total Active<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">B</mml:mi><mml:mprescripts/><mml:none/><mml:mn>8</mml:mn></mml:mmultiscripts></mml:math>Solar Neutrino Flux at the Sudbury Neutrino Observatory with Enhanced Neutral Current Sensitivity
S. N. AhmedDepartment of Physics, Queen's University, Kingston, Ontario K7L 3N6 CanadaA. E. AnthonyDepartment of Physics, University of Texas at Austin, Austin, Texas 78712-0264, USAE. W. BeierDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USAA. BelleriveOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaS. D. BillerDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomJ. BogerChemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USAM. G. BoulayLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAM. G. BowlerDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomT. J. BowlesLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAS. J. BriceLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAT. V. BullardCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAY. D. ChanInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAM. ChenDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaX. ChenInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAB. T. ClevelandDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomG. A. CoxCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAX. DaiDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomF. Dalnoki‐VeressOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaP. J. DoeCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAR.S. DosanjhOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaG. DoucasDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomM. R. DragowskyLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAC. A. DubaCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAF. A. DuncanDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaM. DunfordDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USAJ. DunmoreDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomE. D. EarleDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaS. R. ElliottLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAH. C. EvansDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaG. T. EwanDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaJ. FarineDepartment of Physics and Astronomy, Laurentian University, Sudbury, Ontario P3E 2C6 CanadaH. FerganiDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomF. FleurotDepartment of Physics and Astronomy, Laurentian University, Sudbury, Ontario P3E 2C6 CanadaJ. A. FormaggioCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAM. M. FowlerLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAK. C. FrameDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomB. G. FulsomDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaN. GagnonCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAK. GrahamDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaD. R. GrantOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaR. L. HahnChemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USAJames C. HallDepartment of Physics, University of Texas at Austin, Austin, Texas 78712-0264, USAA. L. HallinDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaE. D. HallmanDepartment of Physics and Astronomy, Laurentian University, Sudbury, Ontario P3E 2C6 CanadaA. S. HamerLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAW. B. HandlerDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaC. K. HargroveOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaP. J. HarveyDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaR. HazamaCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAK. M. HeegerInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAW. J. HeintzelmanDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USAJ. HeiseLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAR. L. HelmerDepartment of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1 CanadaR.J. HemingwayOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaA. HimeLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAM. A. HoweCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAP. JagamPhysics Department, University of Guelph, Guelph, Ontario N1G 2W1 CanadaN.A. JelleyDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomJ. R. KleinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USAM. KosDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaA. V. KruminsDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaT. KutterDepartment of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1 CanadaChristopher C. M. KybaDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USAH. LabranchePhysics Department, University of Guelph, Guelph, Ontario N1G 2W1 CanadaR. LangeChemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USAJ. LawPhysics Department, University of Guelph, Guelph, Ontario N1G 2W1 CanadaI. LawsonPhysics Department, University of Guelph, Guelph, Ontario N1G 2W1 CanadaK. T. LeskoInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAJ. R. LeslieDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaI. LevineOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaS. LuomaDepartment of Physics and Astronomy, Laurentian University, Sudbury, Ontario P3E 2C6 CanadaR. MacLellanDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaSteve MajerusDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomH.‐B. MakDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaJ. ManeiraDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaA. D. MarinoInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAN. McCauleyDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USAA. B. McDonaldDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaS. McGeeCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAG. McGregorDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomC. MifflinOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaK. K. S. MiknaitisCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAGuthrie MillerLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAB. A. MoffatDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaC. W. NallyDepartment of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1 CanadaB. G. NickelPhysics Department, University of Guelph, Guelph, Ontario N1G 2W1 CanadaA. J. NobleDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaE. B. NormanInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAN. S. OblathCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAC. OkadaInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAR. W. OllerheadPhysics Department, University of Guelph, Guelph, Ontario N1G 2W1 CanadaJ. L. OrrellCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAS. M. OserDepartment of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1 CanadaC. OuelletDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaS. J. M. PeetersDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United KingdomA. W. P. PoonInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAB.C. RobertsonDepartment of Physics, Queen’s University, Kingston, Ontario K7L 3N6 CanadaR. G. H. RobertsonCenter for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USAE. RollinOttawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6 CanadaS. S. E. RosendahlInstitute for Nuclear and Particle Astrophysics and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
2004en
ABI
Аннотация
The Sudbury Neutrino Observatory has precisely determined the total active (${\ensuremath{\nu}}_{x}$) $^{8}\mathrm{B}$ solar neutrino flux without assumptions about the energy dependence of the ${\ensuremath{\nu}}_{e}$ 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 $5.21\ifmmode\pm\else\textpm\fi{}0.27\mathrm{(}\mathrm{stat}\mathrm{)}\ifmmode\pm\else\textpm\fi{}0.38\mathrm{(}\mathrm{syst}\mathrm{)}\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }{\mathrm{cm}}^{\ensuremath{-}2}\text{ }\text{ }{\mathrm{s}}^{\ensuremath{-}1}$, in agreement with previous measurements and standard solar models. A global analysis of these and other solar and reactor neutrino results yields $\ensuremath{\Delta}{m}^{2}={7.1}_{\ensuremath{-}0.6}^{+1.2}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}\text{ }{\mathrm{eV}}^{2}$ and $\ensuremath{\theta}={32.5}_{\ensuremath{-}2.3}^{+2.4}$ degrees. Maximal mixing is rejected at the equivalent of 5.4 standard deviations.
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