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    "title": "PHENIX compares high-momentum hadrons in gold and deuteron–gold collisions",
    "summary": "PHENIX measured high-transverse-momentum charged hadrons in gold–gold collisions at 200 GeV per nucleon pair and compared them with neutral-pion and nucleon-collision references. Central gold–gold collisions showed strong suppression, whereas the deuteron–gold control showed no comparable suppression and a modest charged-hadron enhancement. Together the measurements support a dense-medium final-state interpretation.",
    "boundary": "The comparison is restricted to the cited collision energies, centrality selections, midrapidity acceptance and measured momentum ranges. The charged-hadron proton–proton reference was constructed using the neutral-pion spectrum and a hadron-to-pion ratio, and binary-collision normalization uses a Glauber model. Suppression is an observation; parton energy loss and the microscopic state of the medium are interpretations, not a direct unique identification from these measurements alone.",
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        "title": "Absence of Suppression in Particle Production at Large Transverse Momentum in d+Au Collisions",
        "url": "https://arxiv.org/pdf/nucl-ex/0306021v1",
        "date": "2003-06-17"
      },
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        "id": "phenix-auau-highpt-suppression-arxiv-v1-2003",
        "title": "High-pT Charged Hadron Suppression in Au+Au Collisions at 200 GeV",
        "url": "https://arxiv.org/pdf/nucl-ex/0308006v1",
        "date": "2003-08-08"
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      "what_changed": "PHENIX measured high-transverse-momentum charged hadrons in gold–gold collisions at 200 GeV per nucleon pair and compared them with neutral-pion and nucleon-collision references. Central gold–gold collisions showed strong suppression, whereas the deuteron–gold control showed no comparable suppression and a modest charged-hadron enhancement. Together the measurements support a dense-medium final-state interpretation.",
      "scope": "PHENIX measured high-transverse-momentum charged hadrons in gold–gold collisions at 200 GeV per nucleon pair and compared them with neutral-pion and nucleon-collision references. Central gold–gold collisions showed strong suppression, whereas the deuteron–gold control showed no comparable suppression and a modest charged-hadron enhancement. Together the measurements support a dense-medium final-state interpretation. The comparison is restricted to the cited collision energies, centrality selections, midrapidity acceptance and measured momentum ranges. The charged-hadron proton–proton reference was constructed using the neutral-pion spectrum and a hadron-to-pion ratio, and binary-collision normalization uses a Glauber model. Suppression is an observation; parton energy loss and the microscopic state of the medium are interpretations, not a direct unique identification from these measurements alone.",
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            "citation": "Absence of Suppression in Particle Production at Large Transverse Momentum in d+Au Collisions",
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            "citation": "High-pT Charged Hadron Suppression in Au+Au Collisions at 200 GeV",
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            "citation": "Absence of Suppression in Particle Production at Large Transverse Momentum in d+Au Collisions",
            "url": "https://arxiv.org/pdf/nucl-ex/0306021v1"
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            "citation": "High-pT Charged Hadron Suppression in Au+Au Collisions at 200 GeV",
            "url": "https://arxiv.org/pdf/nucl-ex/0308006v1"
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        "description": "The comparison is restricted to the cited collision energies, centrality selections, midrapidity acceptance and measured momentum ranges. The charged-hadron proton–proton reference was constructed using the neutral-pion spectrum and a hadron-to-pion ratio, and binary-collision normalization uses a Glauber model. Suppression is an observation; parton energy loss and the microscopic state of the medium are interpretations, not a direct unique identification from these measurements alone.",
        "domain": "Relativistic nuclear physics"
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          "citation": "Absence of Suppression in Particle Production at Large Transverse Momentum in d+Au Collisions",
          "url": "https://arxiv.org/pdf/nucl-ex/0306021v1"
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        {
          "citation": "High-pT Charged Hadron Suppression in Au+Au Collisions at 200 GeV",
          "url": "https://arxiv.org/pdf/nucl-ex/0308006v1"
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      "statement": "# PHENIX compares high-momentum hadrons in gold and deuteron–gold collisions\n\nPHENIX measured high-transverse-momentum charged hadrons in gold–gold collisions at 200 GeV per nucleon pair and compared them with neutral-pion and nucleon-collision references. Central gold–gold collisions showed strong suppression, whereas the deuteron–gold control showed no comparable suppression and a modest charged-hadron enhancement. Together the measurements support a dense-medium final-state interpretation.\n\n## Scientific scope\n\nThe comparison is restricted to the cited collision energies, centrality selections, midrapidity acceptance and measured momentum ranges. The charged-hadron proton–proton reference was constructed using the neutral-pion spectrum and a hadron-to-pion ratio, and binary-collision normalization uses a Glauber model. Suppression is an observation; parton energy loss and the microscopic state of the medium are interpretations, not a direct unique identification from these measurements alone.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\n\n\nCredit belongs to the cited collaborations. The individual author list is incomplete; no sole discoverer or individual effort share is inferred.\n\n\n\n## Original sources\n\n- [Absence of Suppression in Particle Production at Large Transverse Momentum in d+Au Collisions](https://arxiv.org/pdf/nucl-ex/0306021v1)\n- [High-pT Charged Hadron Suppression in Au+Au Collisions at 200 GeV](https://arxiv.org/pdf/nucl-ex/0308006v1)\n",
      "summary": "PHENIX measured high-transverse-momentum charged hadrons in gold–gold collisions at 200 GeV per nucleon pair and compared them with neutral-pion and nucleon-collision references. Central gold–gold collisions showed strong suppression, whereas the deuteron–gold control showed no comparable suppression and a modest charged-hadron enhancement. Together the measurements support a dense-medium final-state interpretation.",
      "title": "PHENIX compares high-momentum hadrons in gold and deuteron–gold collisions"
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    "id": "phenix-high-pt-suppression-dau-control-2003",
    "entry_id": "phenix-high-pt-suppression-dau-control-2003",
    "revision": 1,
    "title": "PHENIX compares high-momentum hadrons in gold and deuteron–gold collisions",
    "context": "Relativistic nuclear physics",
    "track": "Source-reported experimental result or reusable measurement method",
    "band": "A",
    "modifier": null,
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    "assessed_on": "2026-10-28",
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    "achievement_state": "SUPPORTED_SCOPED_RESULT",
    "what_changed": "PHENIX measured high-transverse-momentum charged hadrons in gold–gold collisions at 200 GeV per nucleon pair and compared them with neutral-pion and nucleon-collision references. Central gold–gold collisions showed strong suppression, whereas the deuteron–gold control showed no comparable suppression and a modest charged-hadron enhancement. Together the measurements support a dense-medium final-state interpretation.",
    "scope": "PHENIX measured high-transverse-momentum charged hadrons in gold–gold collisions at 200 GeV per nucleon pair and compared them with neutral-pion and nucleon-collision references. Central gold–gold collisions showed strong suppression, whereas the deuteron–gold control showed no comparable suppression and a modest charged-hadron enhancement. Together the measurements support a dense-medium final-state interpretation. The comparison is restricted to the cited collision energies, centrality selections, midrapidity acceptance and measured momentum ranges. The charged-hadron proton–proton reference was constructed using the neutral-pion spectrum and a hadron-to-pion ratio, and binary-collision normalization uses a Glauber model. Suppression is an observation; parton energy loss and the microscopic state of the medium are interpretations, not a direct unique identification from these measurements alone.",
    "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The comparison is restricted to the cited collision energies, centrality selections, midrapidity acceptance and measured momentum ranges. The charged-hadron proton–proton reference was constructed using the neutral-pion spectrum and a hadron-to-pion ratio, and binary-collision normalization uses a Glauber model. Suppression is an observation; parton energy loss and the microscopic state of the medium are interpretations, not a direct unique identification from these measurements alone.",
    "references": [
      {
        "title": "Absence of Suppression in Particle Production at Large Transverse Momentum in d+Au Collisions",
        "url": "https://arxiv.org/pdf/nucl-ex/0306021v1",
        "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained."
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      {
        "title": "High-pT Charged Hadron Suppression in Au+Au Collisions at 200 GeV",
        "url": "https://arxiv.org/pdf/nucl-ex/0308006v1",
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