{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:C5ATLAPCALIK542WYOAD3XXD7Y","short_pith_number":"pith:C5ATLAPC","schema_version":"1.0","canonical_sha256":"17413581e202d0aef356c3803ddee3fe13f4c988880a78382815527624f39b58","source":{"kind":"arxiv","id":"2508.20777","version":1},"attestation_state":"computed","paper":{"title":"Analytical two-loop amplitudes of $e^{+} e^{-} \\longrightarrow \\boldsymbol{J} / \\boldsymbol{\\psi}+\\boldsymbol{\\eta}_c$ at $B$ factories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"hep-ph","authors_text":"Chuan-Qi He, Da-Jiang Zhang, Jian Wang, Xiang Chen, Xin Guan, Yan-Qing Ma","submitted_at":"2025-08-28T13:33:02Z","abstract_excerpt":"In double charmonium production, a long-standing challenge is that the theoretical predictions are not consistent with the measurements at B factories. Within the NRQCD framework, the next-to-leading order (NLO) calculation has proved its power to cut down the discrepancy between theory and experiments. To further clarify this puzzle, we have performed the next-to-next-to-leading order (NNLO) calculation. The amplitude is obtained as an analytical asymptotic expansion in the ratio of the squared charm-quark mass over the squared center-of-mass energy, $m_c^2/s$. We investigate the origin of th"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2508.20777","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-08-28T13:33:02Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"b09cac55aa608496a5111168df4312e577d0fcd5dbbc8261f64c085858fb5e8e","abstract_canon_sha256":"fb858b5a8e2a918126a9649932a62896d18ee761c2baecedb5545dcf13f7dadc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:01:10.706085Z","signature_b64":"wJgptGQWSXLhCodofQ2ePRjBm2KdM8V0j+iQyfg4Kwi5QakOjx7YtC+vKMNKiQfIPlVAmIG3jCE00P8r0zVlBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17413581e202d0aef356c3803ddee3fe13f4c988880a78382815527624f39b58","last_reissued_at":"2026-07-05T12:01:10.705579Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:01:10.705579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Analytical two-loop amplitudes of $e^{+} e^{-} \\longrightarrow \\boldsymbol{J} / \\boldsymbol{\\psi}+\\boldsymbol{\\eta}_c$ at $B$ factories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"hep-ph","authors_text":"Chuan-Qi He, Da-Jiang Zhang, Jian Wang, Xiang Chen, Xin Guan, Yan-Qing Ma","submitted_at":"2025-08-28T13:33:02Z","abstract_excerpt":"In double charmonium production, a long-standing challenge is that the theoretical predictions are not consistent with the measurements at B factories. Within the NRQCD framework, the next-to-leading order (NLO) calculation has proved its power to cut down the discrepancy between theory and experiments. To further clarify this puzzle, we have performed the next-to-next-to-leading order (NNLO) calculation. The amplitude is obtained as an analytical asymptotic expansion in the ratio of the squared charm-quark mass over the squared center-of-mass energy, $m_c^2/s$. We investigate the origin of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.20777","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.20777/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":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2508.20777","created_at":"2026-07-05T12:01:10.705638+00:00"},{"alias_kind":"arxiv_version","alias_value":"2508.20777v1","created_at":"2026-07-05T12:01:10.705638+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.20777","created_at":"2026-07-05T12:01:10.705638+00:00"},{"alias_kind":"pith_short_12","alias_value":"C5ATLAPCALIK","created_at":"2026-07-05T12:01:10.705638+00:00"},{"alias_kind":"pith_short_16","alias_value":"C5ATLAPCALIK542W","created_at":"2026-07-05T12:01:10.705638+00:00"},{"alias_kind":"pith_short_8","alias_value":"C5ATLAPC","created_at":"2026-07-05T12:01:10.705638+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.17827","citing_title":"Semi-analytical results for $e^+e^-\\to J/\\psi + X_{{\\rm non\\,}c\\bar{c}}$ up to $\\mathcal{O}(\\alpha_s v^2)$ at B factories","ref_index":56,"is_internal_anchor":false},{"citing_arxiv_id":"2606.02182","citing_title":"Semi-analytical two-loop QCD corrections to $e^+e^-\\to J/\\psi+\\chi_{cJ}$ at B factories","ref_index":23,"is_internal_anchor":false},{"citing_arxiv_id":"2606.28494","citing_title":"Soft Contributions Stabilize NNLO QCD Corrections to Quarkonium Production and Decay","ref_index":50,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y","json":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y.json","graph_json":"https://pith.science/api/pith-number/C5ATLAPCALIK542WYOAD3XXD7Y/graph.json","events_json":"https://pith.science/api/pith-number/C5ATLAPCALIK542WYOAD3XXD7Y/events.json","paper":"https://pith.science/paper/C5ATLAPC"},"agent_actions":{"view_html":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y","download_json":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y.json","view_paper":"https://pith.science/paper/C5ATLAPC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2508.20777&json=true","fetch_graph":"https://pith.science/api/pith-number/C5ATLAPCALIK542WYOAD3XXD7Y/graph.json","fetch_events":"https://pith.science/api/pith-number/C5ATLAPCALIK542WYOAD3XXD7Y/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y/action/timestamp_anchor","attest_storage":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y/action/storage_attestation","attest_author":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y/action/author_attestation","sign_citation":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y/action/citation_signature","submit_replication":"https://pith.science/pith/C5ATLAPCALIK542WYOAD3XXD7Y/action/replication_record"}},"created_at":"2026-07-05T12:01:10.705638+00:00","updated_at":"2026-07-05T12:01:10.705638+00:00"}