{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T14:10:57Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 21.6, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c34-0a71-7953-8747-aa17648fa177\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: nucleon\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 546 things:\n# Batch 003: 1001 register", "usd": 0.0, "recall": true }, "codex": { "seconds": 77.1, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c34-0a40-73e3-9ebd-a1175486ce97\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: nucleon\nRegistry id: vr.tr.nucleon\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext " } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:40:15+00:00", "fields": [ "agent_conduct", "ethics", "owners" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:25+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q102165", "registryId": "vr.tr.nucleon", "name": "nucleon", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q102165/", "model": { "registry_id": "vr.tr.nucleon", "name": "nucleon", "purpose": "Enable an AI agent to identify a proton or neutron as a nucleon, record its physical context, and judge which descriptions, measurements, and transformations apply.", "definition": "A nucleon is a proton or neutron, a composite spin-1/2 baryon that participates in the strong interaction and constitutes ordinary atomic nuclei.", "scope_statement": "This model owns the nucleon as the physical category comprising protons and neutrons, including their internal structure, quantum properties, free or nuclear-bound states, and participation in nuclear processes.", "in_scope": [ "Proton or neutron identity and the properties shared by nucleons", "Quark and gluon structure and the limits of constituent descriptions", "Free, nuclear-bound, and scattering states", "Nucleon interactions, transformations, and conservation constraints", "Measurement context and uncertainty for nucleon properties" ], "out_of_scope": [ "Whole-nucleus composition, collective structure, and isotope classification", "Atomic electron configurations and chemical bonding", "Quarks and gluons treated as independently modelled particle categories", "Antinucleons as physical instances, except as comparison or reaction partners", "Other baryons and excited baryon resonances as independent particle categories", "Accelerators, detectors, and experimental facilities as equipment" ], "distinguishing_features": [ "A nucleon is a proton or neutron; membership in the broader baryon category alone is insufficient.", "A proton has electric charge +1 e and a neutron has charge 0 e; electrical neutrality does not make a neutron an elementary neutral particle.", "A nucleon is a composite spin-1/2 baryon with baryon number +1, distinguishing it from leptons, mesons, and antinucleons.", "Proton and neutron valence-quark content is uud and udd respectively; these labels specify net flavour content without exhausting the quark and gluon structure.", "A nucleon can exist outside a nucleus, while a nucleus is a nuclear system; an ordinary hydrogen nucleus is the special case consisting of one proton." ], "characteristics": [ { "name": "Nucleon species", "kind": "category", "unit_or_values": "proton | neutron", "why_it_matters": "Determines charge, species-specific reference properties, and allowed reaction assignments." }, { "name": "Electric charge", "kind": "measurement", "unit_or_values": "e; proton +1, neutron 0", "why_it_matters": "Constrains electromagnetic interactions and charge conservation." }, { "name": "Intrinsic spin", "kind": "category", "unit_or_values": "spin quantum number s = 1/2", "why_it_matters": "Establishes fermionic behaviour and the allowed spin projections." }, { "name": "Polarization", "kind": "state", "unit_or_values": "spin density matrix or polarization vector relative to a specified basis", "why_it_matters": "Separates a prepared or inferred spin state from intrinsic spin." }, { "name": "Baryon number", "kind": "category", "unit_or_values": "+1", "why_it_matters": "Distinguishes a nucleon from its antiparticle and supports reaction bookkeeping." }, { "name": "Rest mass", "kind": "measurement", "unit_or_values": "MeV/c²; species-specific reference value with source and uncertainty", "why_it_matters": "Supports free-particle kinematics without conflating rest mass with nuclear effective mass." }, { "name": "Physical context", "kind": "state", "unit_or_values": "free | nuclear-bound | scattering | other explicitly specified many-body context", "why_it_matters": "Determines which kinematic, stability, and interaction descriptions apply." }, { "name": "Nuclear host", "kind": "relation", "unit_or_values": "reference to a nucleus and its state, when applicable", "why_it_matters": "Connects a bound nucleon to the system governing its binding and available transitions." }, { "name": "Four-momentum", "kind": "measurement", "unit_or_values": "energy in MeV and momentum in MeV/c, with reference frame and inference method", "why_it_matters": "Enables reaction analysis while exposing assumptions in assigning bound-nucleon kinematics." }, { "name": "Magnetic moment", "kind": "measurement", "unit_or_values": "nuclear magnetons, with sign and species", "why_it_matters": "Captures magnetic coupling, including the neutron's nonzero magnetic moment despite zero net charge." }, { "name": "Spatial-structure observable", "kind": "measurement", "unit_or_values": "specified form factor or radius convention; fm or fm² where appropriate", "why_it_matters": "Prevents charge, magnetic, and matter distributions from being collapsed into a single hard-sphere size." } ], "affordances": [ "Classify a candidate as a proton or neutron using charge, baryon identity, and experimental evidence.", "Select a free-particle or nuclear many-body description appropriate to the physical context and probe scale.", "Construct and check a proposed reaction channel using charge, baryon-number, energy, momentum, and angular-momentum accounting.", "Relate measured scattering or magnetic observables to nucleon structure under an explicit interpretation model.", "Assess whether a species-changing process is energetically available in the recorded free or bound state.", "Record preparation, polarization, scattering, or detection procedures through their associated experimental systems." ], "agent_conduct": { "may": [ "Explain nucleon properties and roles in nuclei from established physics.", "Use nucleon numbers to describe isotopes in calculations." ], "must_not": [ "Present speculative nucleon physics as established fact.", "Confuse nucleons with other particles in data or teaching material." ], "requires_human": [ "Publishing nuclear data used in safety-critical calculations." ] }, "ethics": { "considerations": [ "Nuclear knowledge underlies both energy and weapons, and its applications carry great moral weight." ], "affected_parties": [ "Students", "Researchers", "Nuclear safety engineers" ] }, "owners": { "steward": "Nobody owns it; it is a natural constituent of matter.", "master_systems": [ "Nuclear data libraries" ] }, "what_it_is_for": [ "Nucleons occur as protons and neutrons in atomic nuclei and can also be studied outside nuclei in particle beams and experiments.", "They are used in descriptions of nuclear structure, isotopes, nuclear reactions and the composition of ordinary matter." ], "failure_modes_and_hazards": [ "Energetic proton or neutron radiation can damage living tissue and electronic equipment.", "Confusing proton and neutron behavior can produce incorrect assessments of radiation shielding and nuclear processes." ], "facets_not_applicable": { "interfaces": "No standard, law or official classification directly governs a nucleon itself independently of its experimental or technological context.", "recognition": "An individual nucleon has no directly visible identifying features and requires instrumental detection to characterize it." } }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q102165: nucleon", "url": "https://www.wikidata.org/wiki/Q102165", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Nucleon", "url": "https://en.wikipedia.org/wiki/Nucleon", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "species-and-quantum-identity", "name": "Species and quantum identity", "description": "Establishes which nucleon is represented and the quantum labels that identify it.", "rationale": "Nucleon properties combine shared baryon characteristics with proton-neutron differences that change physical predictions.", "layers": [ { "id": "proton-neutron-membership", "name": "Proton-neutron membership", "description": "Defines category membership and its boundaries against neighbouring particle and nuclear categories.", "findings": [ { "id": "species-assignment", "name": "Species assignment", "description": "A nucleon assignment resolves to proton or neutron and distinguishes category membership from membership in a nucleus.", "questions": [ { "text": "What evidence identifies this nucleon as a proton or neutron?", "kind": "definition", "id": "species-assignment-q01" }, { "text": "Does the record describe an individual nucleon, a one-proton nucleus, or a larger nuclear system?", "kind": "boundary", "id": "species-assignment-q02" } ] } ] }, { "id": "quantum-labels-and-spin-state", "name": "Quantum labels and spin state", "description": "Separates intrinsic particle properties from prepared states and approximate symmetry labels.", "findings": [ { "id": "intrinsic-versus-prepared-properties", "name": "Intrinsic versus prepared properties", "description": "Charge, baryon number, and intrinsic spin identify the particle, while polarization specifies its state; isospin assignments require an explicit convention.", "questions": [ { "text": "Which intrinsic quantum labels are assigned, and do they agree with the selected nucleon species?", "kind": "definition", "id": "intrinsic-versus-prepared-properties-q01" }, { "text": "How was polarization determined, and relative to which axis or basis?", "kind": "measurement", "id": "intrinsic-versus-prepared-properties-q02" }, { "text": "If isospin is used, which projection convention and symmetry-breaking limitations apply?", "kind": "boundary", "id": "intrinsic-versus-prepared-properties-q03" } ] } ] } ] }, { "id": "composite-structure-and-probes", "name": "Composite structure and probes", "description": "Connects quark and gluon descriptions to the observables that resolve nucleon structure.", "rationale": "Treating a nucleon as either elementary or merely three static quarks loses essential distinctions between useful physical descriptions.", "layers": [ { "id": "quark-gluon-description", "name": "Quark and gluon description", "description": "Records net flavour content while retaining the scale dependence of more detailed constituent descriptions.", "findings": [ { "id": "valence-content-and-description-scale", "name": "Valence content and description scale", "description": "The uud and udd assignments encode valence content; descriptions of sea quarks, gluons, and momentum distributions require additional theoretical and scale information.", "questions": [ { "text": "Is the description limited to net valence flavour, or does it include resolved quark and gluon distributions?", "kind": "definition", "id": "valence-content-and-description-scale-q01" }, { "text": "Which resolution scale, theoretical framework, and source support the stated internal structure?", "kind": "provenance", "id": "valence-content-and-description-scale-q02" } ] } ] }, { "id": "electromagnetic-structure", "name": "Electromagnetic structure", "description": "Distinguishes magnetic moments, form factors, and radius definitions.", "findings": [ { "id": "observable-specific-size-and-coupling", "name": "Observable-specific size and coupling", "description": "Nucleon size is inferred through specified observables, and zero net neutron charge does not imply absent electromagnetic structure.", "questions": [ { "text": "Which form factor, magnetic moment, or radius definition is being reported?", "kind": "measurement", "id": "observable-specific-size-and-coupling-q01" }, { "text": "What experiment, extraction method, uncertainty, and momentum-transfer range support the value?", "kind": "provenance", "id": "observable-specific-size-and-coupling-q02" }, { "text": "Would interpreting this value as a positive geometric radius misrepresent the observable, particularly for neutron mean-square charge radius?", "kind": "boundary", "id": "observable-specific-size-and-coupling-q03" } ] } ] } ] }, { "id": "free-and-bound-description", "name": "Free and bound description", "description": "Records the environment and kinematic assumptions needed to describe the nucleon.", "rationale": "Free-particle properties cannot be transferred unchanged into every nuclear calculation or interpreted as independently measurable bound-particle attributes.", "layers": [ { "id": "nuclear-embedding", "name": "Nuclear embedding", "description": "Connects a bound nucleon to its host nucleus and the many-body description being used.", "findings": [ { "id": "host-and-state-assignment", "name": "Host and state assignment", "description": "Nuclear membership and orbital or configuration assignments depend on the host state and nuclear model; identical nucleons need not have individually trackable identities.", "questions": [ { "text": "Is the nucleon free or bound, and which nucleus and nuclear state provide its context?", "kind": "definition", "id": "host-and-state-assignment-q01" }, { "text": "What nuclear model supports any orbital, occupancy, or individual-nucleon assignment?", "kind": "provenance", "id": "host-and-state-assignment-q02" }, { "text": "Does the proposed record incorrectly treat indistinguishable nucleons as persistently labelled classical particles?", "kind": "boundary", "id": "host-and-state-assignment-q03" } ] } ] }, { "id": "kinematics-and-binding", "name": "Kinematics and binding", "description": "Separates reference rest mass from context-dependent energy and momentum assignments.", "findings": [ { "id": "energy-momentum-interpretation", "name": "Energy-momentum interpretation", "description": "Kinematic records identify the frame and distinguish free rest mass, inferred bound-nucleon quantities, effective mass, and nuclear separation energy.", "questions": [ { "text": "In which frame and by which measurement or calculation were energy and momentum assigned?", "kind": "measurement", "id": "energy-momentum-interpretation-q01" }, { "text": "Is the quoted mass or energy a free rest mass, model-dependent effective quantity, or property of a nuclear removal process?", "kind": "boundary", "id": "energy-momentum-interpretation-q02" } ] } ] } ] }, { "id": "interactions-and-transformations", "name": "Interactions and transformations", "description": "Describes how a nucleon scatters, participates in nuclear reactions, and changes species through weak processes.", "rationale": "An agent needs process-specific constraints to distinguish allowed transformations from unsupported inferences based only on particle identity.", "layers": [ { "id": "scattering-and-nuclear-reactions", "name": "Scattering and nuclear reactions", "description": "Records reaction partners, energy regimes, channels, and the evidence supporting predicted outcomes.", "findings": [ { "id": "channel-and-interaction-regime", "name": "Channel and interaction regime", "description": "Elastic scattering, inelastic excitation, capture, and particle production require different kinematic and interaction descriptions.", "questions": [ { "text": "Which initial particles or nuclear systems, collision energy, and final channel define the process?", "kind": "definition", "id": "channel-and-interaction-regime-q01" }, { "text": "Which measured cross section or validated calculation supports the predicted outcome in this energy range?", "kind": "provenance", "id": "channel-and-interaction-regime-q02" }, { "text": "Does the proposed channel satisfy the applicable conservation laws and energy threshold?", "kind": "action", "id": "channel-and-interaction-regime-q03" } ] } ] }, { "id": "weak-conversion-and-stability", "name": "Weak conversion and stability", "description": "Distinguishes free-neutron decay from environment-dependent proton-neutron conversion.", "findings": [ { "id": "context-dependent-conversion", "name": "Context-dependent conversion", "description": "Free neutrons undergo beta decay; nuclear binding and total-system energetics determine whether corresponding conversions are available in a nucleus.", "questions": [ { "text": "Is the proposed process free-neutron beta decay, nuclear beta decay, electron capture, or another specified weak reaction?", "kind": "definition", "id": "context-dependent-conversion-q01" }, { "text": "Do the complete initial and final systems make the conversion energetically possible, including required leptons?", "kind": "action", "id": "context-dependent-conversion-q02" }, { "text": "Which measurement and physical context support any lifetime, branching fraction, or stability claim?", "kind": "provenance", "id": "context-dependent-conversion-q03" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This entry covers the particle-physics sense, including free nucleons and nucleons bound in nuclei.", "Numerical values are recalled approximations; precision work should verify evaluated particle data, especially the free neutron lifetime, for which measurement methods have yielded discrepant results.", "No nucleon-specific regulatory standard is asserted; radiation protection requirements apply to particular sources, facilities and uses." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of nucleon this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-kinds", "name": "Kinds and varieties", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Proton", "Neutron" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of nucleon this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Particle Data Group Monte Carlo particle numbering scheme", "value_or_pattern": "2212 (proton); 2112 (neutron)", "note": "These codes distinguish the two nucleon species." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of nucleon this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Nucleon counts specify nuclear composition: proton number identifies the element, and neutron number distinguishes its isotopes.", "Nuclear structure and reaction calculations describe interactions among nucleons.", "Proton beams are used in particle research and radiotherapy.", "Neutrons are used in scattering experiments, material analysis and nuclear chain reactions." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of nucleon this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Free-particle rest mass", "typical_range": "Approximately 938.272 for a proton; 939.565 for a neutron", "unit": "MeV/c²" }, { "quantity": "Electric charge", "typical_range": "+1 for a proton; 0 for a neutron", "unit": "elementary charge" }, { "quantity": "Spin quantum number", "typical_range": "1/2 for both species", "unit": "dimensionless" }, { "quantity": "Free neutron mean lifetime", "typical_range": "Approximately 880", "unit": "s" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of nucleon this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Energetic proton radiation can damage biological tissue and electronic components.", "Neutron radiation can cause biological damage and activate materials through nuclear reactions.", "A free neutron undergoes beta decay; this instability does not imply that neutrons bound in stable nuclei decay." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of nucleon this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Baryon", "difference": "Baryon is the broader particle class; nucleon specifically denotes a proton or neutron." }, { "name": "Quark", "difference": "Quarks are elementary constituents; nucleons are composite systems containing quarks, antiquarks and gluons." }, { "name": "Atomic nucleus", "difference": "A nucleus is the central nuclear system of an atom, ordinarily containing one or more nucleons; a nucleon is an individual proton or neutron." }, { "name": "Electron", "difference": "An electron is an elementary lepton, whereas a nucleon is a composite baryon." }, { "name": "Antinucleon", "difference": "An antinucleon is an antiproton or antineutron, with baryon number opposite to that of a nucleon." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of nucleon this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does the existing Vercy catalogue already contain a nucleon model or proton and neutron models to which this entry should link?", "Which authoritative reference values, uncertainty conventions, and experimental determinations should supply masses, magnetic moments, radii, and the free-neutron lifetime?", "Which nuclear frameworks should be supported for bound-state assignments, effective masses, and removal energies, and how should their incompatible conventions be exposed?", "Where should the catalogue place the boundary between a nucleon undergoing excitation and an independently represented baryon resonance?", "Which probe-energy ranges and applications must the first researched model support, determining how much form-factor, parton, and reaction-channel detail is necessary?" ], "statistics": { "bundles": 5, "layers": 9, "findings": 15, "questions": 28 } }