{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"5a0fa6c803b349416c4c8182fbdab05d6e4a762f00d00649f4754ea69ff957b0","created":"2026-10-03T07:18:07Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"c454289b433ab809625d420c63f70089c89aa2d5470c2710c181ee76eddce65c","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"value","assisted_by":[],"external_id":"nuc.neutrino-nucleus.energy-reconstruction-bias","kind":"well-posed","literature_status":"open","n":"1","parents":[],"plain":"Oscillation experiments must reconstruct each neutrino's energy from the particles leaving the nucleus, but some energy goes into undetected neutrons, knocked-out nucleons or reabsorbed pions. The bias this causes must be known to about one percent and is not.","posed_since":"","precise":"Quantify the bias and spread of reconstructed versus true neutrino energy, $E_{\\mathrm{reco}} - E_{\\mathrm{true}}$, for calorimetric reconstruction on 40Ar (DUNE, $E_\\nu \\sim 0.5 \\text{ to } 5\\,\\mathrm{GeV}$) and lepton-kinematics reconstruction on 16O (Hyper-Kamiokande, $E_\\nu \\sim 0.6\\,\\mathrm{GeV}$), from 2p2h events, nucleon and pion final-state interactions, and undetected neutrons, to 1 percent of the energy scale. The answer is a model-independent bound or a validated model, tested on electron-scattering data with known beam energy (for example e4nu) and on near-detector data.","problem_ref":null,"references":"","settled_by":"Electron-scattering and neutrino near-detector data that constrain the reconstructed-energy smearing on argon and water to 1 percent, reproduced by one event generator without retuning.","status_note":"","title":"Multinucleon and final-state effects in neutrino energy reconstruction","topic_ref":"b26dbf879b3c8d9dff63a9d6b76e31cb28a6d3c51cf2e1a87d88d68d65a23459"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"729036b7445e6786ad2107a0b01187c92037622f38a1cbbd40e70a9ae21b2fd3","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"928396ecd665912e8b487906bc527387c421a367d0d9887d67bd60f4e57d7b2d","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"o-vut7xGfDN-gpaK9Q0mMbc-3YHsbTmiqqwnjXGO6jA9S4-jCLTvjTXLXOHOsbQeTjDV8QUgF1xoCOTGMSUpCA"},"schema":"pubphys.envelope/1"},"record_hash":"729036b7445e6786ad2107a0b01187c92037622f38a1cbbd40e70a9ae21b2fd3","leaf_index":1773}