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Title: Independent Measurement of the Total Active {sup 8}B Solar Neutrino Flux Using an Array of {sup 3}He Proportional Counters at the Sudbury Neutrino Observatory

Abstract

The Sudbury Neutrino Observatory (SNO) used an array of {sup 3}He proportional counters to measure the rate of neutral-current interactions in heavy water and precisely determined the total active ({nu}{sub x}) {sup 8}B solar neutrino flux. This technique is independent of previous methods employed by SNO. The total flux is found to be 5.54{sub -0.31}{sup +0.33}(stat){sub -0.34}{sup +0.36}(syst)x10{sup 6} cm{sup -2} s{sup -1}, in agreement with previous measurements and standard solar models. A global analysis of solar and reactor neutrino results yields {delta}m{sup 2}=7.59{sub -0.21}{sup +0.19}x10{sup -5} eV{sup 2} and {theta}=34.4{sub -1.2}{sup +1.3} degrees. The uncertainty on the mixing angle has been reduced from SNO's previous results.

Authors:
; ; ; ; ; ; ;  [1]; ; ; ; ; ; ; ; ; ; ; ;  [2]
  1. Department of Physics and Astronomy, Laurentian University, Sudbury, ON P3E 2C6 (Canada)
  2. Department of Physics, Queen's University, Kingston, ON K7L 3N6 (Canada) (and others)
Publication Date:
OSTI Identifier:
21179697
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevLett.101.111301; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BORON 8; GLOBAL ANALYSIS; HEAVY WATER; HELIUM 3; NEUTRAL-CURRENT INTERACTIONS; PROPORTIONAL COUNTERS; SOLAR NEUTRINOS; SUDBURY NEUTRINO OBSERVATORY; WEINBERG ANGLE

Citation Formats

Aharmim, B., Chauhan, D., Farine, J., Fleurot, F., Hallman, E. D., Krueger, A., Schwendener, M. H., Virtue, C. J., Ahmed, S. N., Cai, B., Chen, M., DiMarco, M., Earle, E. D., Evans, H. C., Ewan, G. T., Guillian, E., Harvey, P. J., Keeter, K. J., Kormos, L. L., and Kos, M. Independent Measurement of the Total Active {sup 8}B Solar Neutrino Flux Using an Array of {sup 3}He Proportional Counters at the Sudbury Neutrino Observatory. United States: N. p., 2008. Web. doi:10.1103/PHYSREVLETT.101.111301.
Aharmim, B., Chauhan, D., Farine, J., Fleurot, F., Hallman, E. D., Krueger, A., Schwendener, M. H., Virtue, C. J., Ahmed, S. N., Cai, B., Chen, M., DiMarco, M., Earle, E. D., Evans, H. C., Ewan, G. T., Guillian, E., Harvey, P. J., Keeter, K. J., Kormos, L. L., & Kos, M. Independent Measurement of the Total Active {sup 8}B Solar Neutrino Flux Using an Array of {sup 3}He Proportional Counters at the Sudbury Neutrino Observatory. United States. doi:10.1103/PHYSREVLETT.101.111301.
Aharmim, B., Chauhan, D., Farine, J., Fleurot, F., Hallman, E. D., Krueger, A., Schwendener, M. H., Virtue, C. J., Ahmed, S. N., Cai, B., Chen, M., DiMarco, M., Earle, E. D., Evans, H. C., Ewan, G. T., Guillian, E., Harvey, P. J., Keeter, K. J., Kormos, L. L., and Kos, M. Fri . "Independent Measurement of the Total Active {sup 8}B Solar Neutrino Flux Using an Array of {sup 3}He Proportional Counters at the Sudbury Neutrino Observatory". United States. doi:10.1103/PHYSREVLETT.101.111301.
@article{osti_21179697,
title = {Independent Measurement of the Total Active {sup 8}B Solar Neutrino Flux Using an Array of {sup 3}He Proportional Counters at the Sudbury Neutrino Observatory},
author = {Aharmim, B. and Chauhan, D. and Farine, J. and Fleurot, F. and Hallman, E. D. and Krueger, A. and Schwendener, M. H. and Virtue, C. J. and Ahmed, S. N. and Cai, B. and Chen, M. and DiMarco, M. and Earle, E. D. and Evans, H. C. and Ewan, G. T. and Guillian, E. and Harvey, P. J. and Keeter, K. J. and Kormos, L. L. and Kos, M.},
abstractNote = {The Sudbury Neutrino Observatory (SNO) used an array of {sup 3}He proportional counters to measure the rate of neutral-current interactions in heavy water and precisely determined the total active ({nu}{sub x}) {sup 8}B solar neutrino flux. This technique is independent of previous methods employed by SNO. The total flux is found to be 5.54{sub -0.31}{sup +0.33}(stat){sub -0.34}{sup +0.36}(syst)x10{sup 6} cm{sup -2} s{sup -1}, in agreement with previous measurements and standard solar models. A global analysis of solar and reactor neutrino results yields {delta}m{sup 2}=7.59{sub -0.21}{sup +0.19}x10{sup -5} eV{sup 2} and {theta}=34.4{sub -1.2}{sup +1.3} degrees. The uncertainty on the mixing angle has been reduced from SNO's previous results.},
doi = {10.1103/PHYSREVLETT.101.111301},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 11,
volume = 101,
place = {United States},
year = {2008},
month = {9}
}