{"paper":{"title":"Neutron Reconstruction via Blips in Liquid Argon Time Projection Chambers","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Isolated MeV-scale blips from neutron inelastic scattering enable identification and reconstruction of neutrons in sub-GeV neutrino interactions inside liquid argon time projection chambers.","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"Bryce Littlejohn, Linyan Wan, Miguel Hernandez Morquecho, Paola Sala","submitted_at":"2026-04-13T17:42:21Z","abstract_excerpt":"Neutrons are important final-state particles in neutrino interactions, yet they are not considered or reconstructed in most current neutrino LArTPC physics analyses. In this paper, we present a simulation-based proof-of-concept study of neutron reconstruction in a generic LArTPC detector. Leveraging isolated, MeV-scale energy deposits, or blips, from neutron inelastic scattering, and using realistic blip response from published experimental results, we demonstrate the capability to identify neutrons and to reconstruct the direction and energy of the final-state neutron system in sub-GeV neutri"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Leveraging isolated, MeV-scale energy deposits, or blips, from neutron inelastic scattering, and using realistic blip response from published experimental results, we demonstrate the capability to identify neutrons and to reconstruct the direction and energy of the final-state neutron system in sub-GeV neutrino interactions.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The simulation accurately models blip production, isolation, and detector response in real LArTPC conditions without significant unaccounted backgrounds or reconstruction inefficiencies.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Simulation-based proof-of-concept demonstrates neutron identification and reconstruction of direction and energy using blips from inelastic scattering in LArTPCs.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Isolated MeV-scale blips from neutron inelastic scattering enable identification and reconstruction of neutrons in sub-GeV neutrino interactions inside liquid argon time projection chambers.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"04107b09e5cc1f124cab689279fbe54e2d646259a63f218de97879d036689018"},"source":{"id":"2604.11774","kind":"arxiv","version":2},"verdict":{"id":"977e3e67-3f7e-4551-827f-407d96e4dc91","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T15:03:43.798411Z","strongest_claim":"Leveraging isolated, MeV-scale energy deposits, or blips, from neutron inelastic scattering, and using realistic blip response from published experimental results, we demonstrate the capability to identify neutrons and to reconstruct the direction and energy of the final-state neutron system in sub-GeV neutrino interactions.","one_line_summary":"Simulation-based proof-of-concept demonstrates neutron identification and reconstruction of direction and energy using blips from inelastic scattering in LArTPCs.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The simulation accurately models blip production, isolation, and detector response in real LArTPC conditions without significant unaccounted backgrounds or reconstruction inefficiencies.","pith_extraction_headline":"Isolated MeV-scale blips from neutron inelastic scattering enable identification and reconstruction of neutrons in sub-GeV neutrino interactions inside liquid argon time projection chambers."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.11774/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"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"}