Coherent Elastic Neutrino-Nucleus Scattering at the Japan Proton Accelerator Research Complex
Abstract
The Japan Proton Accelerator Research Complex (J-PARC) currently delivers a 1 MW, 3 GeV proton beam to the Materials and Life Science Experimental Facility (MLF). Power is expected to increase to 1.3 MW, driven by the needs of Hyper-Kamiokande. As a result, the MLF presently provides the highest neutron yield of any spallation source, while potentially holding the best current and foreseeable conditions for Coherent Elastic Neutrino-Nucleus Scattering (CENS) experimentation. We explore this potential, using as examples detector technologies presently funded for construction and under development. We quantify their sensitivity to a rich variety of particle physics scenarios, finding that very-high-statistics CENS measurements with significant sensitivity to relevant scenarios are feasible at this facility within the next few years.
Keywords
Cite
@article{arxiv.2512.19788,
title = {Coherent Elastic Neutrino-Nucleus Scattering at the Japan Proton Accelerator Research Complex},
author = {J. I. Collar and Ivan Esteban and J. J. Gomez-Cadenas and M. C. Gonzalez-Garcia and L. Ji and L. Larizgoitia and C. M. Lewis and F. Monrabal and João Paulo Pinheiro and A. Simón and S. G. Yoon},
journal= {arXiv preprint arXiv:2512.19788},
year = {2026}
}
Comments
19 pages, 13 figures. Ge background updated, conclusions unchanged. Matches version accepted by JHEP