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Title: Observation of coherent elastic neutrino-nucleus scattering

The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross section is by far the largest of all low-energy neutrino couplings. This mode of interaction offers new opportunities to study neutrino properties and leads to a miniaturization of detector size, with potential technological applications. In this paper, we observed this process at a 6.7σ confidence level, using a low-background, 14.6-kilogram CsI[Na] scintillator exposed to the neutrino emissions from the Spallation Neutron Source at Oak Ridge National Laboratory. Characteristic signatures in energy and time, predicted by the standard model for this process, were observed in high signal-to-background conditions. Finally, improved constraints on nonstandard neutrino interactions with quarks are derived from this initial data set.
Authors:
; ; ; ; ORCiD logo ; ; ; ; ; ; ; ORCiD logo ; ; ; ; ; ; ; ORCiD logo ; more »; ; ; ; ; ; ; ; ; ; ; ORCiD logo ; ; ORCiD logo ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo ; ; ORCiD logo ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Report Number(s):
LA-UR-17-26787; SAND-2017-8714J
Journal ID: ISSN 0036-8075; TRN: US1800899
Grant/Contract Number:
AC52-06NA25396; AC05-76RL01830; NA0003525; NA0002576; SC0009824; SC0010007; SC0014249; SC0014558; AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Science
Additional Journal Information:
Journal Volume: 357; Journal Issue: 6356; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Research Org:
Duke Univ., Durham, NC (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20); ORNL Laboratory Directed Research and Development (LDRD) Program; LBNL Laboratory Directed Research and Development (LDRD) Program
Contributing Orgs:
COHERENT Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1429827
Alternate Identifier(s):
OSTI ID: 1416288