Looping Around Neutrino Charge Radius at Ultra-Near Reactor Experiments
Abstract
We scrutinize the potential of upcoming ultra-near reactor neutrino experiments to detect radiative corrections in the elastic neutrino-electron scattering channel, focusing on the JUNO-TAO and CLOUD detectors, which employ advanced scintillator detection technologies. Previous reactor experiments have already constrained the electron neutrino charge radius, which is a neutrino property associated with a certain subset of the total radiative corrections, and have achieved limits that are only about an order of magnitude away from the Standard Model prediction. Our study demonstrates that JUNO-TAO and CLOUD could discover the neutrino charge radius in the near future, considering the established treatment of the charge radius. However, we show that it is necessary to go beyond this standard treatment. By including the complete set of one-loop level radiative corrections, we find a partial cancellation with the charge radius effect, reducing the experimental sensitivity to this quantity. Nevertheless, JUNO-TAO and CLOUD still have the potential to achieve a discovery but over longer timescales within a reasonable operational timeframe.
Keywords
Cite
@article{arxiv.2410.00107,
title = {Looping Around Neutrino Charge Radius at Ultra-Near Reactor Experiments},
author = {Vedran Brdar and Leonardo J. Ferreira Leite and George A. Parker and Xun-Jie Xu},
journal= {arXiv preprint arXiv:2410.00107},
year = {2024}
}
Comments
13 pages, 7 figures. Matches published version