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First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon
Cited 143 time in
Web of Science
Cited 174 time in Scopus
- Authors
- Issue Date
- 2021-01
- Publisher
- American Physical Society
- Citation
- Physical Review Letters, Vol.126 No.1, p. 012002
- Abstract
- We report the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) on argon using a liquid argon detector at the Oak Ridge National Laboratory Spallation Neutron Source. Two independent analyses prefer CEvNS over the background-only null hypothesis with greater than 3 sigma significance. The measured cross section, averaged over the incident neutrino flux, is (2.2 +/- 0.7) x 10(-39) cm(2)-consistent with the standard model prediction. The neutron-number dependence of this result, together with that from our previous measurement on CsI, confirms the existence of the CEvNS process and provides improved constraints on nonstandard neutrino interactions.
- ISSN
- 0031-9007
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