{"paper":{"title":"The High W Challenge: Robust Neutrino Energy Estimators for LArTPCs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"A new W²-based neutrino energy estimator using hadronic invariant mass shows the smallest bias and greatest stability against mismodelling in LArTPCs.","cross_cats":["hep-ex"],"primary_cat":"physics.data-an","authors_text":"Christopher Thorpe, Elena Gramellini","submitted_at":"2025-11-14T10:27:25Z","abstract_excerpt":"Accurate determination of the neutrino energy is central to precision oscillation measurements. In this work, we introduce the W$^2$-based estimator, a new neutrino energy estimator based on the measurement of the final-state hadronic invariant mass. This estimator is particularly designed to be employed in liquid-argon time-projection chambers exposed to broadband beams that span the challenging transition region between shallow inelastic scattering and deep inelastic scattering. The performance of the W$^2$-based estimator is compared to four other commonly used estimators. The impact of the"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We find that the W²-based estimator shows the smallest bias as a function of true neutrino energy and it is particularly stable against the mismodelling of lepton scattering angle and momentum, missing energy, hadronic invariant mass and final state interactions.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the toy long-baseline oscillation analysis and the assumed mismodelling scenarios sufficiently capture the dominant uncertainties present in real LArTPC data taking and reconstruction.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"The W²-based estimator shows the smallest bias versus true neutrino energy and greater stability to mismodelling of scattering and interactions than four common alternatives in LArTPC experiments.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A new W²-based neutrino energy estimator using hadronic invariant mass shows the smallest bias and greatest stability against mismodelling in LArTPCs.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"ae4b958038c1b3388576f671003a37aea8912b96626e0d49bbba8f905727a336"},"source":{"id":"2511.11149","kind":"arxiv","version":3},"verdict":{"id":"70327adf-e1a6-428a-af15-d3e37be7ee05","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-17T22:39:10.740734Z","strongest_claim":"We find that the W²-based estimator shows the smallest bias as a function of true neutrino energy and it is particularly stable against the mismodelling of lepton scattering angle and momentum, missing energy, hadronic invariant mass and final state interactions.","one_line_summary":"The W²-based estimator shows the smallest bias versus true neutrino energy and greater stability to mismodelling of scattering and interactions than four common alternatives in LArTPC experiments.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the toy long-baseline oscillation analysis and the assumed mismodelling scenarios sufficiently capture the dominant uncertainties present in real LArTPC data taking and reconstruction.","pith_extraction_headline":"A new W²-based neutrino energy estimator using hadronic invariant mass shows the smallest bias and greatest stability against mismodelling in LArTPCs."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2511.11149/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":1,"snapshot_sha256":"3ece0e9abba748626332b29ceaccfcc486c589a5e2300c6128d30ac2134bcca9"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}