Measurement of the ⁸B Solar Neutrino Flux with the KamLAND Liquid Scintillator Detector

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dc.contributor.author Piepke, Andreas
dc.date.accessioned 2019-05-14T17:17:20Z
dc.date.available 2019-05-14T17:17:20Z
dc.date.issued 2011-09-13 en_US
dc.identifier.uri http://ir.ua.edu/handle/123456789/5533
dc.description.abstract We report a measurement of the neutrino-electron elastic scattering rate from ⁸B 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 ⁸B neutrino spectrum, this corresponds to a spectrum integrated flux of 2.77 ± 0.26(stat) ± 0.32(syst) × 10⁶ cm⁻²s⁻¹. The analysis threshold is driven by ²⁰⁸Tl present in the liquid scintillator, and the main source of systematic uncertainty is due to background from cosmogenic ¹¹Be. The measured rate is consistent with existing measurements and with standard solar model predictions which include matter-enhanced neutrino oscillation. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.subject Solar neutrinos en_US
dc.subject Neutrino mass and mixing en_US
dc.subject Neutrino interactions en_US
dc.title Measurement of the ⁸B Solar Neutrino Flux with the KamLAND Liquid Scintillator Detector en_US
dc.type text en_US


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