Low-Multiplicity Burst Search At The Sudbury Neutrino Observatory

Date

2011-02

Authors

Aharmim, B.
Ahmed, S. N.
Anthony, A. E.
Barros, N.
Beier, E. W.
Bellerive, A.
Beltran, B.
Bergevin, M.
Biller, S. D.
Boudjemline, K.

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Abstract

Results are reported from a search for low-multiplicity neutrino bursts in the Sudbury Neutrino Observatory. Such bursts could indicate the detection of a nearby core-collapse supernova explosion. The data were taken from Phase I (1999 November-2001 May), when the detector was filled with heavy water, and Phase II (2001 July-2003 August), when NaCl was added to the target. The search was a blind analysis in which the potential backgrounds were estimated and analysis cuts were developed to eliminate such backgrounds with 90% confidence before the data were examined. The search maintained a greater than 50% detection probability for standard supernovae occurring at a distance of up to 60 kpc for Phase I and up to 70 kpc for Phase II. No low-multiplicity bursts were observed during the data-taking period.

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Citation

Aharmim, B., S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran et al. "Low-multiplicity burst search at the Sudbury Neutrino Observatory." The Astrophysical Journal, Vol. 728, No. 2 (Feb., 2011): 83.