{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:EH7CN5TS5SFGEBT7DR6FKGAMBK","short_pith_number":"pith:EH7CN5TS","canonical_record":{"source":{"id":"1509.05225","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-17T12:05:08Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"bac908c2f6c89f4402c2aa3df2050365345149dadd6c425e83b0b62b5d1131a7","abstract_canon_sha256":"faca70359129f76eb528111ba4786996343a9b80fa889a611be5728e213a5558"},"schema_version":"1.0"},"canonical_sha256":"21fe26f672ec8a62067f1c7c55180c0a84e254ccb05b09ce8bcd1b6051673cbf","source":{"kind":"arxiv","id":"1509.05225","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.05225","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"arxiv_version","alias_value":"1509.05225v1","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.05225","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"pith_short_12","alias_value":"EH7CN5TS5SFG","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EH7CN5TS5SFGEBT7","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EH7CN5TS","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:EH7CN5TS5SFGEBT7DR6FKGAMBK","target":"record","payload":{"canonical_record":{"source":{"id":"1509.05225","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-17T12:05:08Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"bac908c2f6c89f4402c2aa3df2050365345149dadd6c425e83b0b62b5d1131a7","abstract_canon_sha256":"faca70359129f76eb528111ba4786996343a9b80fa889a611be5728e213a5558"},"schema_version":"1.0"},"canonical_sha256":"21fe26f672ec8a62067f1c7c55180c0a84e254ccb05b09ce8bcd1b6051673cbf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:24:52.266966Z","signature_b64":"bshaeeXWYXGJSpZY3OViZIQ/8YZdiX1N83Ohahc4Cio8GgMSylpif4zmFXPcflA1DhkgsUv3yoXsnIlMbQSRCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21fe26f672ec8a62067f1c7c55180c0a84e254ccb05b09ce8bcd1b6051673cbf","last_reissued_at":"2026-05-18T01:24:52.266247Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:24:52.266247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.05225","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":"2026-05-18T01:24:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kgni32HEBVIvFucb3+0I45HW8g8ZkKtLzvDri65fEn7E+ldmZ9rg66eD7sWB1538jCiciaNCUWx5635zUW80CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:12:37.306618Z"},"content_sha256":"77542d9014382d3f6babaa5a850de9e1826c0e6bd61c776a3bf42238651535b8","schema_version":"1.0","event_id":"sha256:77542d9014382d3f6babaa5a850de9e1826c0e6bd61c776a3bf42238651535b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:EH7CN5TS5SFGEBT7DR6FKGAMBK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pion polarizabilities: Theory vs Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Mikhail A. Ivanov","submitted_at":"2015-09-17T12:05:08Z","abstract_excerpt":"The values of charged pion polarizabilities obtained in the framework of chiral perturbation theory at the level of two-loop accuracy are compared with the experimental result recently reported by COMPASS Collaboration. It is found that the calculated value for the dipole polarizabilities $(\\alpha-\\beta)_{\\pi^\\pm}= (5.7\\pm 1.0)\\times 10^{-4}\\,{\\rm fm}^3$ fits quite well the experimental result $(\\alpha-\\beta)_{\\pi^\\pm} = (4.0 \\pm 1.2_{\\rm stat} \\pm 1.4_{\\rm syst}) \\times 10^{-4}\\,{\\rm fm}^3$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.05225","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":"2026-05-18T01:24:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y2CKfpmLZEkjni2vyoo/SMgkBi1pL2OcxjPBAJ9JycAAQuMgLsY7dKorO3ytZgutDVv3BL1whguAL+x8QIjEDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:12:37.307335Z"},"content_sha256":"8dee9f8bc79b5dcbb46b015c8d47423d18ee569f82a16c5eb8e30fbb13fc9503","schema_version":"1.0","event_id":"sha256:8dee9f8bc79b5dcbb46b015c8d47423d18ee569f82a16c5eb8e30fbb13fc9503"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EH7CN5TS5SFGEBT7DR6FKGAMBK/bundle.json","state_url":"https://pith.science/pith/EH7CN5TS5SFGEBT7DR6FKGAMBK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EH7CN5TS5SFGEBT7DR6FKGAMBK/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":"2026-06-08T19:12:37Z","links":{"resolver":"https://pith.science/pith/EH7CN5TS5SFGEBT7DR6FKGAMBK","bundle":"https://pith.science/pith/EH7CN5TS5SFGEBT7DR6FKGAMBK/bundle.json","state":"https://pith.science/pith/EH7CN5TS5SFGEBT7DR6FKGAMBK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EH7CN5TS5SFGEBT7DR6FKGAMBK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:EH7CN5TS5SFGEBT7DR6FKGAMBK","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":"faca70359129f76eb528111ba4786996343a9b80fa889a611be5728e213a5558","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-17T12:05:08Z","title_canon_sha256":"bac908c2f6c89f4402c2aa3df2050365345149dadd6c425e83b0b62b5d1131a7"},"schema_version":"1.0","source":{"id":"1509.05225","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.05225","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"arxiv_version","alias_value":"1509.05225v1","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.05225","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"pith_short_12","alias_value":"EH7CN5TS5SFG","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EH7CN5TS5SFGEBT7","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EH7CN5TS","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:8dee9f8bc79b5dcbb46b015c8d47423d18ee569f82a16c5eb8e30fbb13fc9503","target":"graph","created_at":"2026-05-18T01:24:52Z","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":"The values of charged pion polarizabilities obtained in the framework of chiral perturbation theory at the level of two-loop accuracy are compared with the experimental result recently reported by COMPASS Collaboration. It is found that the calculated value for the dipole polarizabilities $(\\alpha-\\beta)_{\\pi^\\pm}= (5.7\\pm 1.0)\\times 10^{-4}\\,{\\rm fm}^3$ fits quite well the experimental result $(\\alpha-\\beta)_{\\pi^\\pm} = (4.0 \\pm 1.2_{\\rm stat} \\pm 1.4_{\\rm syst}) \\times 10^{-4}\\,{\\rm fm}^3$.","authors_text":"Mikhail A. Ivanov","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-17T12:05:08Z","title":"Pion polarizabilities: Theory vs Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.05225","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":"sha256:77542d9014382d3f6babaa5a850de9e1826c0e6bd61c776a3bf42238651535b8","target":"record","created_at":"2026-05-18T01:24:52Z","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":"faca70359129f76eb528111ba4786996343a9b80fa889a611be5728e213a5558","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-17T12:05:08Z","title_canon_sha256":"bac908c2f6c89f4402c2aa3df2050365345149dadd6c425e83b0b62b5d1131a7"},"schema_version":"1.0","source":{"id":"1509.05225","kind":"arxiv","version":1}},"canonical_sha256":"21fe26f672ec8a62067f1c7c55180c0a84e254ccb05b09ce8bcd1b6051673cbf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21fe26f672ec8a62067f1c7c55180c0a84e254ccb05b09ce8bcd1b6051673cbf","first_computed_at":"2026-05-18T01:24:52.266247Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:24:52.266247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bshaeeXWYXGJSpZY3OViZIQ/8YZdiX1N83Ohahc4Cio8GgMSylpif4zmFXPcflA1DhkgsUv3yoXsnIlMbQSRCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:24:52.266966Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.05225","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77542d9014382d3f6babaa5a850de9e1826c0e6bd61c776a3bf42238651535b8","sha256:8dee9f8bc79b5dcbb46b015c8d47423d18ee569f82a16c5eb8e30fbb13fc9503"],"state_sha256":"318c86fe4feac90b3d115fff348402ecc38bee9511a1ea6f033aa6582c8eb542"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"55zACEckVvzzhxXX6s11fp7fggirxnHbmujE4PP1Pl0goWjQsKsIPlSQM8sMay7pRV335yrinXyAVo2G8BpZCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T19:12:37.311346Z","bundle_sha256":"61549c3e5f548eac70d82f09c5ced2e05def767e98f44ace3965b117a669b52c"}}