{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:KLRXDGEGVSOS2HGAHYP3NBAEEK","short_pith_number":"pith:KLRXDGEG","canonical_record":{"source":{"id":"1508.07809","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-31T13:06:02Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"58c0a253e5a3cfd8572d471840058e2d2a1e4e4572c46e0661ce4e600bbcf218","abstract_canon_sha256":"344fe24d8720f848c791ff2e772e0acdae01dc227a6735358eb935584e8c6b40"},"schema_version":"1.0"},"canonical_sha256":"52e3719886ac9d2d1cc03e1fb6840422a19fd3551bb812f77769a9e5a366a97f","source":{"kind":"arxiv","id":"1508.07809","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.07809","created_at":"2026-05-18T01:29:20Z"},{"alias_kind":"arxiv_version","alias_value":"1508.07809v2","created_at":"2026-05-18T01:29:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.07809","created_at":"2026-05-18T01:29:20Z"},{"alias_kind":"pith_short_12","alias_value":"KLRXDGEGVSOS","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KLRXDGEGVSOS2HGA","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KLRXDGEG","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:KLRXDGEGVSOS2HGAHYP3NBAEEK","target":"record","payload":{"canonical_record":{"source":{"id":"1508.07809","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-31T13:06:02Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"58c0a253e5a3cfd8572d471840058e2d2a1e4e4572c46e0661ce4e600bbcf218","abstract_canon_sha256":"344fe24d8720f848c791ff2e772e0acdae01dc227a6735358eb935584e8c6b40"},"schema_version":"1.0"},"canonical_sha256":"52e3719886ac9d2d1cc03e1fb6840422a19fd3551bb812f77769a9e5a366a97f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:20.492632Z","signature_b64":"vSwWHnpkLI4os4c5qao3MME26VgYedHUajlOlLPoixw4wqF3z2JKs/xiyH6di+0yVACrcH0udVFk0fWQSWnwBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"52e3719886ac9d2d1cc03e1fb6840422a19fd3551bb812f77769a9e5a366a97f","last_reissued_at":"2026-05-18T01:29:20.491946Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:20.491946Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.07809","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:29:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2itEq8o1asrpwn9e3vRGymOnorGG5VkwYDUU8KKjsjkAn4lTUyujtFAJHLp2qpRnmp1h9lZ54a5NBHO6/PRUCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T20:32:30.182760Z"},"content_sha256":"b60dfd92cb38dce82e6c4ace8abf09b9e436632b3313f051c2e2eb8671282ef0","schema_version":"1.0","event_id":"sha256:b60dfd92cb38dce82e6c4ace8abf09b9e436632b3313f051c2e2eb8671282ef0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:KLRXDGEGVSOS2HGAHYP3NBAEEK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Charge-conjugation symmetric complete impulse approximation for the pion electromagnetic form factor in the Covariant Spectator Theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Alfred Stadler, Elmar P. Biernat, Franz Gross, M. T. Pe\\~na","submitted_at":"2015-08-31T13:06:02Z","abstract_excerpt":"The pion form factor is calculated in the framework of the charge-conjugation invariant Covariant Spectator Theory. This formalism is established in Minkowski space and the calculation is set up in momentum space. In a previous calculation we included only the leading pole coming from the spectator quark (referred to as the relativistic impulse approximation). In this paper we also include the contributions from the poles of the quark which interacts with the photon and average over all poles in both the upper and lower half planes in order to preserve charge conjugation invariance (referred t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.07809","kind":"arxiv","version":2},"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":"2026-05-18T01:29:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PuoRZCaj2DlmIHr6/ufzuO+XjicqN/CySD97h/J+kdQRRRz4TSdhlz7+ZNu9wLobbGIQCstbSmk403tKUCpVDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T20:32:30.183107Z"},"content_sha256":"d2c8f5d63bd142503911905e47d133350bb676a63713c26705b2ca806263e4c9","schema_version":"1.0","event_id":"sha256:d2c8f5d63bd142503911905e47d133350bb676a63713c26705b2ca806263e4c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KLRXDGEGVSOS2HGAHYP3NBAEEK/bundle.json","state_url":"https://pith.science/pith/KLRXDGEGVSOS2HGAHYP3NBAEEK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KLRXDGEGVSOS2HGAHYP3NBAEEK/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":"2026-07-03T20:32:30Z","links":{"resolver":"https://pith.science/pith/KLRXDGEGVSOS2HGAHYP3NBAEEK","bundle":"https://pith.science/pith/KLRXDGEGVSOS2HGAHYP3NBAEEK/bundle.json","state":"https://pith.science/pith/KLRXDGEGVSOS2HGAHYP3NBAEEK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KLRXDGEGVSOS2HGAHYP3NBAEEK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KLRXDGEGVSOS2HGAHYP3NBAEEK","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":"344fe24d8720f848c791ff2e772e0acdae01dc227a6735358eb935584e8c6b40","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-31T13:06:02Z","title_canon_sha256":"58c0a253e5a3cfd8572d471840058e2d2a1e4e4572c46e0661ce4e600bbcf218"},"schema_version":"1.0","source":{"id":"1508.07809","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.07809","created_at":"2026-05-18T01:29:20Z"},{"alias_kind":"arxiv_version","alias_value":"1508.07809v2","created_at":"2026-05-18T01:29:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.07809","created_at":"2026-05-18T01:29:20Z"},{"alias_kind":"pith_short_12","alias_value":"KLRXDGEGVSOS","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KLRXDGEGVSOS2HGA","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KLRXDGEG","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:d2c8f5d63bd142503911905e47d133350bb676a63713c26705b2ca806263e4c9","target":"graph","created_at":"2026-05-18T01:29:20Z","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 pion form factor is calculated in the framework of the charge-conjugation invariant Covariant Spectator Theory. This formalism is established in Minkowski space and the calculation is set up in momentum space. In a previous calculation we included only the leading pole coming from the spectator quark (referred to as the relativistic impulse approximation). In this paper we also include the contributions from the poles of the quark which interacts with the photon and average over all poles in both the upper and lower half planes in order to preserve charge conjugation invariance (referred t","authors_text":"Alfred Stadler, Elmar P. Biernat, Franz Gross, M. T. Pe\\~na","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-31T13:06:02Z","title":"Charge-conjugation symmetric complete impulse approximation for the pion electromagnetic form factor in the Covariant Spectator Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.07809","kind":"arxiv","version":2},"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:b60dfd92cb38dce82e6c4ace8abf09b9e436632b3313f051c2e2eb8671282ef0","target":"record","created_at":"2026-05-18T01:29:20Z","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":"344fe24d8720f848c791ff2e772e0acdae01dc227a6735358eb935584e8c6b40","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-31T13:06:02Z","title_canon_sha256":"58c0a253e5a3cfd8572d471840058e2d2a1e4e4572c46e0661ce4e600bbcf218"},"schema_version":"1.0","source":{"id":"1508.07809","kind":"arxiv","version":2}},"canonical_sha256":"52e3719886ac9d2d1cc03e1fb6840422a19fd3551bb812f77769a9e5a366a97f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52e3719886ac9d2d1cc03e1fb6840422a19fd3551bb812f77769a9e5a366a97f","first_computed_at":"2026-05-18T01:29:20.491946Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:20.491946Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vSwWHnpkLI4os4c5qao3MME26VgYedHUajlOlLPoixw4wqF3z2JKs/xiyH6di+0yVACrcH0udVFk0fWQSWnwBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:20.492632Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.07809","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b60dfd92cb38dce82e6c4ace8abf09b9e436632b3313f051c2e2eb8671282ef0","sha256:d2c8f5d63bd142503911905e47d133350bb676a63713c26705b2ca806263e4c9"],"state_sha256":"f37fda3d1298a136e1c20df56f214c79420431d7c3035f3eb30d832630ccf7bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D/3bfdmOWpz6D/G/1e1ZUfYAZl8ZmVpmP/8Q9JVARj6egh/zAGIN0RwioWUJtVMlvRf89JnPiqJCjrWDulRWCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T20:32:30.185165Z","bundle_sha256":"545dcc7640c6d88c017d7de423fbd790cdd6cbc2b9708d5d04dc8da103cc1815"}}