Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos

Abstract A first measurement of neutrinos from the CNO fusion cycle in the Sun would allow a resolution to the current solar metallicity problem. Detection of these low-energy neutrinos requires a low-threshold detector, while discrimination from radioactive backgrounds in the region of interest is...

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Main Authors: R. Bonventre, G. D. Orebi Gann
Format: Article
Language:English
Published: SpringerOpen 2018-05-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-018-5925-7
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author R. Bonventre
G. D. Orebi Gann
author_facet R. Bonventre
G. D. Orebi Gann
author_sort R. Bonventre
collection DOAJ
description Abstract A first measurement of neutrinos from the CNO fusion cycle in the Sun would allow a resolution to the current solar metallicity problem. Detection of these low-energy neutrinos requires a low-threshold detector, while discrimination from radioactive backgrounds in the region of interest is significantly enhanced via directional sensitivity. This combination can be achieved in a water-based liquid scintillator target, which offers enhanced energy resolution beyond a standard water Cherenkov detector. We study the sensitivity of such a detector to CNO neutrinos under various detector and background scenarios, and draw conclusions about the requirements for such a detector to successfully measure the CNO neutrino flux. A detector designed to measure CNO neutrinos could also achieve a few-percent measurement of pep neutrinos.
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spelling doaj.art-587dc1768c914ef4bd7a0e3b56830a092022-12-22T03:34:05ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-05-0178611110.1140/epjc/s10052-018-5925-7Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinosR. Bonventre0G. D. Orebi Gann1Lawrence Berkeley National LaboratoryLawrence Berkeley National LaboratoryAbstract A first measurement of neutrinos from the CNO fusion cycle in the Sun would allow a resolution to the current solar metallicity problem. Detection of these low-energy neutrinos requires a low-threshold detector, while discrimination from radioactive backgrounds in the region of interest is significantly enhanced via directional sensitivity. This combination can be achieved in a water-based liquid scintillator target, which offers enhanced energy resolution beyond a standard water Cherenkov detector. We study the sensitivity of such a detector to CNO neutrinos under various detector and background scenarios, and draw conclusions about the requirements for such a detector to successfully measure the CNO neutrino flux. A detector designed to measure CNO neutrinos could also achieve a few-percent measurement of pep neutrinos.http://link.springer.com/article/10.1140/epjc/s10052-018-5925-7
spellingShingle R. Bonventre
G. D. Orebi Gann
Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos
European Physical Journal C: Particles and Fields
title Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos
title_full Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos
title_fullStr Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos
title_full_unstemmed Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos
title_short Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos
title_sort sensitivity of a low threshold directional detector to cno cycle solar neutrinos
url http://link.springer.com/article/10.1140/epjc/s10052-018-5925-7
work_keys_str_mv AT rbonventre sensitivityofalowthresholddirectionaldetectortocnocyclesolarneutrinos
AT gdorebigann sensitivityofalowthresholddirectionaldetectortocnocyclesolarneutrinos