Independent measurement of the total active ⁸B solar neutrino flux using an array of ³He proportional counters at the sudbury neutrino observatory

Authors

B. Aharmim, Laurentian University
S. N. Ahmed, Queen’s University
J. F. Amsbaugh, University of Washington
A. E. Anthony, The University of Texas at Austin
J. Banar, Los Alamos National Laboratory
N. Barros, Laboratório de Instrumentação
E. W. Beier, University of Pennsylvania
A. Bellerive, Carleton University
B. Beltran, University of Alberta
M. Bergevin, University of Guelph
S. D. Biller, University of Oxford
K. Boudjemline, Carleton University
M. G. Boulay, Los Alamos National Laboratory
T. J. Bowles, Los Alamos National Laboratory
M. C. Browne, Los Alamos National Laboratory
T. V. Bullard, University of Washington
T. H. Burritt, University of Washington
B. Cai, Queen’s University
Y. D. Chan, Lawrence Berkeley National Laboratory
D. Chauhan, Laurentian University
M. Chen, Queen’s University
B. T. Cleveland, University of Oxford
G. A. Cox-Mobrand, University of Washington
C. A. Currat, Lawrence Berkeley National Laboratory
X. Dai, Carleton University
H. Deng, University of Pennsylvania
J. Detwiler, Lawrence Berkeley National Laboratory
M. Dimarco, Queen’s University

Document Type

Article

Publication Date

9-9-2008

Abstract

The Sudbury Neutrino Observatory (SNO) used an array of He3 proportional counters to measure the rate of neutral-current interactions in heavy water and precisely determined the total active (νx) B8 solar neutrino flux. This technique is independent of previous methods employed by SNO. The total flux is found to be 5.54-0.31+0.33(stat)-0.34+0.36(syst)×106cm-2s-1, in agreement with previous measurements and standard solar models. A global analysis of solar and reactor neutrino results yields Δm2=7.59-0.21+0.19×10-5eV2 and θ=34.4-1.2+1.3 degrees. The uncertainty on the mixing angle has been reduced from SNO's previous results. © 2008 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

Recommended Citation

Aharmim, B., Ahmed, S., Amsbaugh, J., Anthony, A., Banar, J., Barros, N., Beier, E., Bellerive, A., Beltran, B., Bergevin, M., Biller, S., Boudjemline, K., Boulay, M., Bowles, T., Browne, M., Bullard, T., Burritt, T., Cai, B., Chan, Y., Chauhan, D., Chen, M., Cleveland, B., Cox-Mobrand, G., Currat, C., Dai, X., Deng, H., Detwiler, J., & Dimarco, M. (2008). Independent measurement of the total active ⁸B solar neutrino flux using an array of ³He proportional counters at the sudbury neutrino observatory. Physical Review Letters, 101 (11) https://doi.org/10.1103/PhysRevLett.101.111301