Coherent elastic neutrino-nucleus scattering at the Japan Proton Accelerator Research Complex

A bstract 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 (CE ν NS) 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 CE ν NS measurements with significant sensitivity to relevant scenarios are feasible at this facility within the next few years.

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Publication Details

Journal
Journal of High Energy Physics
Published
2026-05-11
DOI
https://doi.org/10.1007/jhep05(2026)106
Primary Topic
Neutrino Physics Research
Type
article
Field-Weighted Citation Impact
0.00

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article

Coherent elastic neutrino-nucleus scattering at the Japan Proton Accelerator Research Complex

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Journal of High Energy Physics
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Coherent elastic neutrino-nucleus scattering at the Japan Proton Accelerator Research Complex

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article en

Abstract

A bstract 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 (CE ν NS) 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 CE ν NS measurements with significant sensitivity to relevant scenarios are feasible at this facility within the next few years.

Journal of High Energy PhysicsVol. 2026(5)
Ikerbasque (ES), Institució Catalana de Recerca i Estudis Avançats (ES), Universitat de València (ES), University of the Basque Country (ES), Shanghai Jiao Tong University (CN), University of Chicago (US), Donostia International Physics Center (ES), Stony Brook University (US), Universitat de Barcelona (ES)
National Science Foundation, National Natural Science Foundation of China, Eusko Jaurlaritza, Shanghai Jiao Tong University, HORIZON EUROPE Framework Programme, Agencia Estatal de Investigación
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