{"paper":{"title":"Coherent Elastic Neutrino-Nucleus Scattering at the Japan Proton Accelerator Research Complex","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Very-high-statistics CEνNS measurements with sensitivity to particle physics scenarios are feasible at J-PARC within the next few years.","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"A. Sim\\'on, C.M. Lewis, F. Monrabal, Ivan Esteban, J.I. Collar, J.J. Gomez-Cadenas, Jo\\~ao Paulo Pinheiro, L. Ji, L. Larizgoitia, M.C. Gonzalez-Garcia, S.G. Yoon","submitted_at":"2025-12-22T19:00:01Z","abstract_excerpt":"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$\\nu$NS) experimentation. We explore this potential, using as examples detector technologies presently funded for construction and under deve"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"very-high-statistics CEνNS measurements with significant sensitivity to relevant scenarios are feasible at this facility within the next few years.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"Detector performance, background levels, and the planned increase in beam power to 1.3 MW will match the modeled expectations used in the sensitivity projections.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"High-statistics CEνNS measurements at J-PARC are feasible with significant sensitivity to relevant particle physics scenarios using currently funded detectors.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Very-high-statistics CEνNS measurements with sensitivity to particle physics scenarios are feasible at J-PARC within the next few years.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"cc6dec0ecd91f9ad7645816ff42e3b026eab3d03a68c282db8cea2454bc279d3"},"source":{"id":"2512.19788","kind":"arxiv","version":4},"verdict":{"id":"79b53dec-34d0-47c6-85fc-2ac65a4d07d5","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-16T20:16:24.798879Z","strongest_claim":"very-high-statistics CEνNS measurements with significant sensitivity to relevant scenarios are feasible at this facility within the next few years.","one_line_summary":"High-statistics CEνNS measurements at J-PARC are feasible with significant sensitivity to relevant particle physics scenarios using currently funded detectors.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"Detector performance, background levels, and the planned increase in beam power to 1.3 MW will match the modeled expectations used in the sensitivity projections.","pith_extraction_headline":"Very-high-statistics CEνNS measurements with sensitivity to particle physics scenarios are feasible at J-PARC within the next few years."},"references":{"count":149,"sample":[{"doi":"","year":null,"title":"The beam power is assumed to be 1.3 MW and the proton energy 3 GeV, as discussed in Sec. I. We assume 3 years of running time and an exposure of 3,600 hr per calendar year due to periods of main- tena","work_id":"04c3303a-8d61-4290-a99c-2bbc2df12774","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"We assumef π/p = 0.44, as discussed in Sec. II","work_id":"eddda28d-8dd1-4df1-b273-d8710fbdb7d9","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"A number of possible detector locations can be envi- sioned at this distance within the third floor terrace of the MLF [38, 39]","work_id":"a6ff35ba-0cb2-465e-bbeb-0ebc0a0bef9e","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"The detection efficiency is assumed to be a step function at threshold, with a conservative 80% ac- ceptance. In the SM, the differential cross section for CEνNS of να on a nucleus of massMconsisting ","work_id":"13b1b202-dfcd-4f59-9b3b-8d1975822fde","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.13039/501100011033","year":null,"title":"ERDF A way of making Europe, by ERDF/EU,","work_id":"dd544aa1-fa7d-44a2-9d86-6421740a1e1e","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":149,"snapshot_sha256":"c4c4d51080e7586bc27e477838cc5408a0a49245cabaa721138c6df9be0ea508","internal_anchors":50},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}