Abstract
Neutrino-nucleus elastic scattering () provides a unique laboratory to study the quantum-mechanical (QM) coherency effects in electroweak interactions. The deviations of the cross sections from those of completely coherent systems can be quantitatively characterized through a coherency parameter . The relations between and the underlying nuclear physics in terms of nuclear form factors are derived. The dependence of cross section on for the various neutrino sources is presented. The values are evaluated from the measured data of the COHERENT CsI and Ar experiments. Complete coherency and decoherency conditions are excluded by the CsI data with at and at , respectively, verifying that both QM superpositions and nuclear many-body effects contribute to interactions.
3 More- Received 14 October 2020
- Revised 1 March 2021
- Accepted 12 April 2021
DOI:https://doi.org/10.1103/PhysRevD.103.092002
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society