Measurement of the rate of ve + d → p + p + e⁻ interactions produced by ⁸B solar neutrinos at the sudbury neutrino observatory

Authors

Q. R. Ahmad, University of Washington
R. C. Allen, University of California, Irvine
T. C. 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. 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, University of Oxford

Document Type

Article

Publication Date

8-13-2001

Abstract

Solar neutrinos from 8B 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 νe’s is measured by the CC reaction rate to be φCC(ve) = 1.75 ± 0.07(stat)+0.12−0.11(syst) ± 0.05(theor) × 106 cm−2s−1. Comparison of φCC(ve) to the Super-Kamiokande Collaboration’s precision value of the flux inferred from the ES reaction yields a 3.3σ difference, assuming the systematic uncertainties are normally distributed, providing evidence of an active non-ve component in the solar flux. The total flux of active 8B neutrinos is determined to be 5.44 ± 0.99 × 106 cm−2s−1. © 2001 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

First Page

71301

Last Page

1

Recommended Citation

Ahmad, Q., Allen, R., Andersen, T., Anglin, J., Bühler, G., Barton, J., Beier, E., Bercovitch, M., Bigu, J., Biller, S., Black, R., Blevis, I., Boardman, R., Boger, J., Bonvin, E., Boulay, M., Bowler, M., Bowles, T., Brice, S., Browne, M., Bullard, T., Burritt, T., Cameron, K., Cameron, J., Chan, Y., Chen, M., Chen, H., & Chen, X. (2001). Measurement of the rate of ve + d → p + p + e⁻ interactions produced by ⁸B solar neutrinos at the sudbury neutrino observatory. Physical Review Letters, 87 (7), 71301-1. https://doi.org/10.1103/PhysRevLett.87.071301