Measurement of the [superscript 8]B solar neutrino flux with the KamLAND liquid scintillator detector
Name
Abe-2011-Measurement of the 8B solar neutrino flux with.pdf
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Author(s)
Winslow, Lindley
Alternative Title
Measurement of the 8B solar neutrino flux with the KamLAND liquid scintillator detector
Date Issued
September 2011
Journal
Physical Review C
Publisher
American Physical Society (APS)
Citation
Abe, S. et al. “Measurement of the ^{8}B Solar Neutrino Flux with the KamLAND Liquid Scintillator Detector.” Physical Review C 84.3 (2011): n. pag. Web. 22 Mar. 2012. © 2011 American Physical Society
Version
Final published version
Abstract
We report a measurement of the neutrino-electron elastic scattering rate from [superscript 8]B solar neutrinos based on a 123 kton-day exposure of KamLAND. The background-subtracted electron recoil rate, above a 5.5-MeV analysis threshold is 1.49 ± 0.14(stat) ± 0.17(syst) events per kton-day. Interpreted as due to a pure electron flavor flux with a [superscript 8]B neutrino spectrum, this corresponds to a spectrum integrated flux of 2.77 ± 0.26(stat) ± 0.32(syst) ×10[superscript 6] cm[superscript −2]s[superscript −1]. The analysis threshold is driven by [superscript 208]Tl present in the liquid scintillator, and the main source of systematic uncertainty is due to background from cosmogenic [superscript 11]Be. The measured rate is consistent with existing measurements and with standard solar model predictions which include matter-enhanced neutrino oscillation.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.84.035804
