The Observations of Coherent Elastic Neutrino-Nucleus Scattering

by JONGHEE YOO (KAIST)

Thursday 19 Nov 2020, 16:00 → 17:00 Australia/Sydney

The coherent elastic scattering of neutrinos off nuclei (CEvNS) has eluded detection since its first prediction in 1974. Its predicted cross-section is the largest by far of all low-energy neutrino couplings. The CEvNS provides new opportunities to study neutrino properties, while leading to a miniaturization of detector size, with potential technological applications. The COHERENT observed this process at a 6.7-sigma confidence level, using a low-background, 14.6-kg CsI[Na] scintillator exposed to the neutrino emissions from the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory. Follow-up measurements of using 30kg LAr detector (CENNS-10) observed CEvNS process in Ar target for the first time and confirmed N^2 dependence of CEvNS. In this seminar, I will present the the recent results of CEvNS observation and future prospect.