Preprint

Coherent Elastic Neutrino-Nucleus Scattering at the Japan Proton Accelerator Research Complex

J. I. CollarIvan EstebanDepartment of Physics , University of the Basque Country UPV/EHU , PO Box 644 , 48080 Bilbao , SpainJ. J. Gomez-CadenasIkerbasque , Basque Foundation for Science , Plaza Euskadi 5 , 48013 , Bilbao , SpainM. C. Gonzalez-GarciaL. JiDonostia International Physics Center , Paseo Manuel Lardizabal 4 , 20018 , Donostia-San Sebastián , SpainL. LarizgoitiaDonostia International Physics Center , Paseo Manuel Lardizabal 4 , 20018 , Donostia-San Sebastián , SpainC. M. LewisEnrico Fermi Institute , Kavli Institute for Cosmological Physics , and Department of PhysicsF. MonrabalJoão Paulo PinheiroA. SimónDonostia International Physics CenterS. G. YoonEnrico Fermi Institute , Kavli Institute for Cosmological Physics , and Department of Physics

2025

ABI

Annotatsiya

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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