First constraint on coherent elastic neutrino-nucleus scattering in argon

Akimov, D, Albert, JB, An, P, Awe, C, Barbeau, PS, Becker, B, Belov, V, Blackston, MA, Bolozdynya, A, Cabrera-Palmer, B
et al (show 69 more authors) (2019) First constraint on coherent elastic neutrino-nucleus scattering in argon. Physical Review D, 100 (11). 115020-.

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Coherent elastic neutrino-nucleus scattering (CEvNS) is calculated to be the dominant neutrino scattering channel for neutrinos of energy Eν<100 MeV. We report a limit for this process from data collected in an engineering run of the 29 kg CENNS-10 liquid argon detector located 27.5 m from the pion decay-at-rest neutrino source at the Oak Ridge National Laboratory Spallation Neutron Source (SNS) with 4.2×1022 protons on target. The dataset provided constraints on beam-related backgrounds critical for future measurements and yielded <7.4 candidate CEvNS events which implies a cross section for the process, averaged over the SNS pion decay-at-rest flux, of <3.4×10-39 cm2, a limit within twice the Standard Model prediction. This is the first limit on CEvNS from an argon nucleus and confirms the earlier CsI[Na] nonstandard neutrino interaction constraints from the collaboration. This run demonstrated the feasibility of the ongoing experimental effort to detect CEvNS with liquid argon.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 05 Feb 2020 09:47
Last Modified: 17 Mar 2024 07:05
DOI: 10.1103/physrevd.100.115020
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