{"paper":{"title":"Complete Next-to-Next-to-Leading-Order QCD Correction to $J/\\psi \\to 3\\gamma$ Decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Amplitude-level NRQCD factorization yields the first complete NNLO QCD correction to J/ψ → 3γ, producing a positive decay width of 0.96 eV that aligns with BESIII data.","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Bin Gong, Chao Zeng, Cong Li, Jian-Xiong Wang, Ruichang Niu, Xu-Dong Huang","submitted_at":"2026-03-27T09:20:43Z","abstract_excerpt":"We address the long-standing problem of negative decay and production rates in perturbative QCD for exclusive processes by proposing amplitude-level NRQCD factorization as a systematic prescription. Building on this, we present the first complete next-to-next-to-leading-order (NNLO) QCD correction to the decay $J/\\psi \\to 3\\gamma$. The resulting partial width, $\\Gamma(J/\\psi \\to 3\\gamma) = 0.96^{+4.32}_{-0.13}$ eV, combines this NNLO contribution with the known up to $\\mathcal{O}(\\alpha_s v^2)$ relativistic correction and shows markedly improved agreement with the high-precision BESIII measure"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We present the first complete next-to-next-to-leading-order (NNLO) QCD correction to the decay J/ψ → 3γ. The resulting partial width Γ(J/ψ → 3γ) = 0.96^{+4.32}_{-0.13} eV shows markedly improved agreement with the BESIII measurement.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that amplitude-level NRQCD factorization provides a systematic prescription resolving negative rates, and that the perturbative series converges sufficiently at NNLO despite dominant renormalization scale variation.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"First complete NNLO QCD correction to J/ψ → 3γ gives partial width 0.96 eV that aligns better with BESIII measurement.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Amplitude-level NRQCD factorization yields the first complete NNLO QCD correction to J/ψ → 3γ, producing a positive decay width of 0.96 eV that aligns with BESIII data.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"4555ed3449add47396676b98ad18ce857561a6c42de778212e19a84017bee405"},"source":{"id":"2603.26199","kind":"arxiv","version":3},"verdict":{"id":"7b073623-0d09-4496-ba07-be52dd73f9d1","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T23:03:26.788201Z","strongest_claim":"We present the first complete next-to-next-to-leading-order (NNLO) QCD correction to the decay J/ψ → 3γ. The resulting partial width Γ(J/ψ → 3γ) = 0.96^{+4.32}_{-0.13} eV shows markedly improved agreement with the BESIII measurement.","one_line_summary":"First complete NNLO QCD correction to J/ψ → 3γ gives partial width 0.96 eV that aligns better with BESIII measurement.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that amplitude-level NRQCD factorization provides a systematic prescription resolving negative rates, and that the perturbative series converges sufficiently at NNLO despite dominant renormalization scale variation.","pith_extraction_headline":"Amplitude-level NRQCD factorization yields the first complete NNLO QCD correction to J/ψ → 3γ, producing a positive decay width of 0.96 eV that aligns with BESIII data."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2603.26199/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":2,"snapshot_sha256":"dced59cf0bf84a7f590277cb980d45fa64e98d20689aad6d92a32999a93b0ca3"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}