{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:REGJULXA26XZVZM5KLTYCHL66O","short_pith_number":"pith:REGJULXA","canonical_record":{"source":{"id":"1510.02293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-10-08T12:24:36Z","cross_cats_sorted":[],"title_canon_sha256":"fcd10483fda6d872197b500986356f09d7690add97eef1045a388b8dbe93d9b8","abstract_canon_sha256":"ca6ac1c304829cabd80b3fd8e99b9387a55cff169d273407c1bb4db0b96b9131"},"schema_version":"1.0"},"canonical_sha256":"890c9a2ee0d7af9ae59d52e7811d7ef393f8d2f0403df74064965cdc18cef33c","source":{"kind":"arxiv","id":"1510.02293","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.02293","created_at":"2026-05-18T01:30:44Z"},{"alias_kind":"arxiv_version","alias_value":"1510.02293v1","created_at":"2026-05-18T01:30:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.02293","created_at":"2026-05-18T01:30:44Z"},{"alias_kind":"pith_short_12","alias_value":"REGJULXA26XZ","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"REGJULXA26XZVZM5","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"REGJULXA","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:REGJULXA26XZVZM5KLTYCHL66O","target":"record","payload":{"canonical_record":{"source":{"id":"1510.02293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-10-08T12:24:36Z","cross_cats_sorted":[],"title_canon_sha256":"fcd10483fda6d872197b500986356f09d7690add97eef1045a388b8dbe93d9b8","abstract_canon_sha256":"ca6ac1c304829cabd80b3fd8e99b9387a55cff169d273407c1bb4db0b96b9131"},"schema_version":"1.0"},"canonical_sha256":"890c9a2ee0d7af9ae59d52e7811d7ef393f8d2f0403df74064965cdc18cef33c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:44.202682Z","signature_b64":"+98J9BYh/kStY/CMVYID36iS4AGWTvlARIl0B7w84LYJZTYMuw8jRxqtjEL368/wMBZFPFM87adfpyF+V7m3AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"890c9a2ee0d7af9ae59d52e7811d7ef393f8d2f0403df74064965cdc18cef33c","last_reissued_at":"2026-05-18T01:30:44.202125Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:44.202125Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.02293","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:30:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RvMQOmVQL2qGSwSdEFXv/eP2/wxQmd8Skqu1Qtjx0nhnfQ3aeupU60T/peWxfRGxYmCnIYGKDrpcGELWOV3wAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T19:59:33.289474Z"},"content_sha256":"48a6f0b0966f47a2282374c495a87c22e0cf989a9322733a3fa2e2c377a0b1d3","schema_version":"1.0","event_id":"sha256:48a6f0b0966f47a2282374c495a87c22e0cf989a9322733a3fa2e2c377a0b1d3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:REGJULXA26XZVZM5KLTYCHL66O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of the e+e- -> pi+pi- cross section using initial state radiation at BESIII","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Benedikt Kloss","submitted_at":"2015-10-08T12:24:36Z","abstract_excerpt":"Using a data set with an integrated luminosity of 2.93 fb$^{-1}$ taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider, we extract the $e^+e^-\\rightarrow \\pi^+\\pi^-$ cross section and the pion form factor $|F_\\pi|^2$ in the energy range between 600 and 900 MeV. We exploit the method of initial state radiation for this measurement, yielding a systematic uncertainty of 0.9%. We calculate the contribution of the measured cross section to the leading-order hadronic vacuum polarization contribution to $(g-2)_\\mu$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.02293","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:30:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a2ipRqcpWPN3K6p9Nvk1z/CHVC5R7s1XoN7Zjb2Ai33zzaDJiS2lsqX3Y2B9VqXMSKx2V7jQbHSPE9j5Zt3NAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T19:59:33.289815Z"},"content_sha256":"3efb60508b6446ca93aeca48c237041e95ea7190af41ce5ec9734609788b92a4","schema_version":"1.0","event_id":"sha256:3efb60508b6446ca93aeca48c237041e95ea7190af41ce5ec9734609788b92a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/REGJULXA26XZVZM5KLTYCHL66O/bundle.json","state_url":"https://pith.science/pith/REGJULXA26XZVZM5KLTYCHL66O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/REGJULXA26XZVZM5KLTYCHL66O/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-10T19:59:33Z","links":{"resolver":"https://pith.science/pith/REGJULXA26XZVZM5KLTYCHL66O","bundle":"https://pith.science/pith/REGJULXA26XZVZM5KLTYCHL66O/bundle.json","state":"https://pith.science/pith/REGJULXA26XZVZM5KLTYCHL66O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/REGJULXA26XZVZM5KLTYCHL66O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:REGJULXA26XZVZM5KLTYCHL66O","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"ca6ac1c304829cabd80b3fd8e99b9387a55cff169d273407c1bb4db0b96b9131","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-10-08T12:24:36Z","title_canon_sha256":"fcd10483fda6d872197b500986356f09d7690add97eef1045a388b8dbe93d9b8"},"schema_version":"1.0","source":{"id":"1510.02293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.02293","created_at":"2026-05-18T01:30:44Z"},{"alias_kind":"arxiv_version","alias_value":"1510.02293v1","created_at":"2026-05-18T01:30:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.02293","created_at":"2026-05-18T01:30:44Z"},{"alias_kind":"pith_short_12","alias_value":"REGJULXA26XZ","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"REGJULXA26XZVZM5","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"REGJULXA","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:3efb60508b6446ca93aeca48c237041e95ea7190af41ce5ec9734609788b92a4","target":"graph","created_at":"2026-05-18T01:30:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Using a data set with an integrated luminosity of 2.93 fb$^{-1}$ taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider, we extract the $e^+e^-\\rightarrow \\pi^+\\pi^-$ cross section and the pion form factor $|F_\\pi|^2$ in the energy range between 600 and 900 MeV. We exploit the method of initial state radiation for this measurement, yielding a systematic uncertainty of 0.9%. We calculate the contribution of the measured cross section to the leading-order hadronic vacuum polarization contribution to $(g-2)_\\mu$.","authors_text":"Benedikt Kloss","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-10-08T12:24:36Z","title":"Measurement of the e+e- -> pi+pi- cross section using initial state radiation at BESIII"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.02293","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:48a6f0b0966f47a2282374c495a87c22e0cf989a9322733a3fa2e2c377a0b1d3","target":"record","created_at":"2026-05-18T01:30:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"ca6ac1c304829cabd80b3fd8e99b9387a55cff169d273407c1bb4db0b96b9131","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-10-08T12:24:36Z","title_canon_sha256":"fcd10483fda6d872197b500986356f09d7690add97eef1045a388b8dbe93d9b8"},"schema_version":"1.0","source":{"id":"1510.02293","kind":"arxiv","version":1}},"canonical_sha256":"890c9a2ee0d7af9ae59d52e7811d7ef393f8d2f0403df74064965cdc18cef33c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"890c9a2ee0d7af9ae59d52e7811d7ef393f8d2f0403df74064965cdc18cef33c","first_computed_at":"2026-05-18T01:30:44.202125Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:44.202125Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+98J9BYh/kStY/CMVYID36iS4AGWTvlARIl0B7w84LYJZTYMuw8jRxqtjEL368/wMBZFPFM87adfpyF+V7m3AA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:44.202682Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.02293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48a6f0b0966f47a2282374c495a87c22e0cf989a9322733a3fa2e2c377a0b1d3","sha256:3efb60508b6446ca93aeca48c237041e95ea7190af41ce5ec9734609788b92a4"],"state_sha256":"fc9579d6eaa993c3c8938ba2f73713b70d34687c82117d5eb41b250c0d2f5e36"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4ZLkjUUL396v3+mfHA3W9NXqA43YUxJU7Ka5FHEW6gkDnBBMQ6ySsE+h9H1Ujpaqk6dKSYl4T/lTpfl6IibKBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T19:59:33.291673Z","bundle_sha256":"db7f2097b7175cf28e91859b17a1f0ebc663c015892b73cf99635f33f7ea32c8"}}