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First measurement of ?13 from delayed neutron capture on hydrogen in the Double Chooz experiment
journal contribution
posted on 2023-06-10, 01:46 authored by Y Abe, C Aberle, J C dos Anjos, J C Barriere, M Bergevin, A Bernstein, Thiago Sogo BezerraThiago Sogo Bezerra, L Bezrukhov, E Blucher, N S Bowden, C Buck, J Busenitz, A Cabrera, E Caden, L Camilleri, othersThe Double Chooz experiment has determined the value of the neutrino oscillation parameter ?13 from an analysis of inverse beta decay interactions with neutron capture on hydrogen. This analysis uses a three times larger fiducial volume than the standard Double Chooz assessment, which is restricted to a region doped with gadolinium (Gd), yielding an exposure of 113.1 GW-ton-years. The data sample used in this analysis is distinct from that of the Gd analysis, and the systematic uncertainties are also largely independent, with some exceptions, such as the reactor neutrino flux prediction. A combined rate- and energy-dependent fit finds sin22?13=0.097±0.034 (stat.)±0.034 (syst.), excluding the no-oscillation hypothesis at 2.0. This result is consistent with previous measurements of sin22?13.
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- Published
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- Published version
Journal
Physics Letters BISSN
0370-2693Publisher
ElsevierExternal DOI
Issue
1-3Volume
723Page range
66-70Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2021-11-16First Open Access (FOA) Date
2021-11-16First Compliant Deposit (FCD) Date
2021-11-12Usage metrics
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