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Coherent neutrino scattering on cesium and iodine nuclei

Published on:

2 October 2023

Primary Category:

Instrumentation and Detectors

Paper Authors:

Charles Mark Lewis

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Key Details

First observation of coherent neutrino-nucleus scattering, a neutral-current Standard Model process

Detection via few-keV nuclear recoils in cesium iodide detector near Spallation Neutron Source

Measured cross section and event rate matched Standard Model predictions

Key uncertainty was quenching factor of CsI[Na] for nuclear recoils

Opens up neutrino physics at energies below 10 MeV

AI generated summary

Coherent neutrino scattering on cesium and iodine nuclei

This paper reports the first observation of coherent elastic neutrino-nucleus scattering (CEνNS), using a cesium iodide detector near the Spallation Neutron Source at Oak Ridge National Laboratory. Neutrinos were detected via nuclear recoils with energies of a few keV. The measured cross section and event rate matched predictions from the Standard Model. A key finding was that the quenching factor of CsI[Na] for nuclear recoils was not well known, leading to large uncertainties. This measurement opens up neutrino physics at low energies below 10 MeV.

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