Independent measurement of the total active B8 solar neutrino flux using an array of He3 proportional counters at the Sudbury Neutrino Observatory

Aharmim, B. and Ahmed, S. N. and Amsbaugh, J. F. and Anthony, A. E. and Banar, J. and Barros, N. and Beier, E. W. and Bellerive, A. and Beltran, B. and Bergevin, M. and Biller, S. D. and Boudjemline, K. and Boulay, M. G. and Bowles, T. J. and Browne, M. C. and Bullard, T. V. and Burritt, T. H. and Cai, B. and Chan, Y. D. and Chauhan, D. and Chen, M. and Cleveland, B. T. and Cox-Mobrand, G. A. and Currat, C. A. and Dai, X. and Deng, H. and Detwiler, J. and DiMarco, M. and Doe, P. J. and Doucas, G. and Drouin, P. -L. and Duba, C. A. and Duncan, F. A. and Dunford, M. and Earle, E. D. and Elliott, S. R. and Evans, H. C. and Ewan, G. T. and Farine, J. and Fergani, H. and Fleurot, F. and Ford, R. J. and Formaggio, J. A. and Fowler, M. M. and Gagnon, N. and Germani, J. V. and Goldschmidt, A. and Goon, J. T. M. and Kormos, Laura and O'Keeffe, Helen (2008) Independent measurement of the total active B8 solar neutrino flux using an array of He3 proportional counters at the Sudbury Neutrino Observatory. Physical review letters, 101 (11). ISSN 1079-7114

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Abstract

The Sudbury Neutrino Observatory (SNO) used an array of 3He proportional counters to measure the rate of neutral-current interactions in heavy water and precisely determined the total active (νx) 8B 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)×106  cm-2 s-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+0.19×10-5  eV2 and θ=34.4-1.2+1.3 degrees. The uncertainty on the mixing angle has been reduced from SNO’s previous results.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Additional Information: © 2008 The American Physical Society
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 52341
Deposited By: ep_importer_pure
Deposited On: 20 Jan 2012 14:56
Refereed?: Yes
Published?: Published
Last Modified: 21 Feb 2020 01:40
URI: https://eprints.lancs.ac.uk/id/eprint/52341

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