{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:TS26UW7Z2VMJKGJG37OQKGS5XQ","short_pith_number":"pith:TS26UW7Z","schema_version":"1.0","canonical_sha256":"9cb5ea5bf9d558951926dfdd051a5dbc01dd042a787de157a445f52acb0c989b","source":{"kind":"arxiv","id":"1911.04064","version":3},"attestation_state":"computed","paper":{"title":"Lattice QCD calculation of the pion charge radius using a model-independent method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"hep-lat","authors_text":"Lu-Chang Jin, Xu Feng, Yang Fu","submitted_at":"2019-11-11T03:46:40Z","abstract_excerpt":"We use a method to calculate the hadron's charge radius without model-dependent momentum extrapolations. The method does not require the additional quark propagator inversions on the twisted boundary conditions or the computation of the momentum derivatives of quark propagators and thus is easy to implement. We apply this method to the calculation of pion charge radius $\\langle r_\\pi^2\\rangle$. For comparison, we also determine $\\langle r_\\pi^2\\rangle$ with the traditional approach of computing the slope of the form factors. The new method produces results consistent with those from the tradit"},"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":"1911.04064","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2019-11-11T03:46:40Z","cross_cats_sorted":["hep-ex","hep-ph"],"title_canon_sha256":"aa4187cd07cc7713c670f31bc9a49a543b6c447c2c212e7f8835bc7e8c251df9","abstract_canon_sha256":"f69b51a482f9d062fc5ae5a41fcb6e859062330e083454bf537576aacdd4d181"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:51:34.253224Z","signature_b64":"SazWum6n+bA+7hCZP47aAMENgPbX8Y9Bhc8zKD04mrPEhMBpt6Bj6+eKdtbsVRyeKylbnASIFE/5+WCIEfOUCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9cb5ea5bf9d558951926dfdd051a5dbc01dd042a787de157a445f52acb0c989b","last_reissued_at":"2026-07-05T00:51:34.252833Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:51:34.252833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lattice QCD calculation of the pion charge radius using a model-independent method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"hep-lat","authors_text":"Lu-Chang Jin, Xu Feng, Yang Fu","submitted_at":"2019-11-11T03:46:40Z","abstract_excerpt":"We use a method to calculate the hadron's charge radius without model-dependent momentum extrapolations. The method does not require the additional quark propagator inversions on the twisted boundary conditions or the computation of the momentum derivatives of quark propagators and thus is easy to implement. We apply this method to the calculation of pion charge radius $\\langle r_\\pi^2\\rangle$. For comparison, we also determine $\\langle r_\\pi^2\\rangle$ with the traditional approach of computing the slope of the form factors. The new method produces results consistent with those from the tradit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.04064","kind":"arxiv","version":3},"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/1911.04064/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":"1911.04064","created_at":"2026-07-05T00:51:34.252888+00:00"},{"alias_kind":"arxiv_version","alias_value":"1911.04064v3","created_at":"2026-07-05T00:51:34.252888+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.04064","created_at":"2026-07-05T00:51:34.252888+00:00"},{"alias_kind":"pith_short_12","alias_value":"TS26UW7Z2VMJ","created_at":"2026-07-05T00:51:34.252888+00:00"},{"alias_kind":"pith_short_16","alias_value":"TS26UW7Z2VMJKGJG","created_at":"2026-07-05T00:51:34.252888+00:00"},{"alias_kind":"pith_short_8","alias_value":"TS26UW7Z","created_at":"2026-07-05T00:51:34.252888+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2604.12921","citing_title":"An improvement of model-independent method for meson charge radius calculation","ref_index":23,"is_internal_anchor":false},{"citing_arxiv_id":"2604.11116","citing_title":"Extraction of Pion Unpolarized Quark Generalized Parton Distribution from Charge Form Factors","ref_index":47,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ","json":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ.json","graph_json":"https://pith.science/api/pith-number/TS26UW7Z2VMJKGJG37OQKGS5XQ/graph.json","events_json":"https://pith.science/api/pith-number/TS26UW7Z2VMJKGJG37OQKGS5XQ/events.json","paper":"https://pith.science/paper/TS26UW7Z"},"agent_actions":{"view_html":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ","download_json":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ.json","view_paper":"https://pith.science/paper/TS26UW7Z","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1911.04064&json=true","fetch_graph":"https://pith.science/api/pith-number/TS26UW7Z2VMJKGJG37OQKGS5XQ/graph.json","fetch_events":"https://pith.science/api/pith-number/TS26UW7Z2VMJKGJG37OQKGS5XQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ/action/storage_attestation","attest_author":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ/action/author_attestation","sign_citation":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ/action/citation_signature","submit_replication":"https://pith.science/pith/TS26UW7Z2VMJKGJG37OQKGS5XQ/action/replication_record"}},"created_at":"2026-07-05T00:51:34.252888+00:00","updated_at":"2026-07-05T00:51:34.252888+00:00"}