{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:TPV352KX42AUN337E4KGATK5WF","short_pith_number":"pith:TPV352KX","canonical_record":{"source":{"id":"1501.00062","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-12-31T01:34:56Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"2683fc46781c48a047850aed8a1ce7cf14d057e43c654894483ddce7c1d60482","abstract_canon_sha256":"8fe7f6be54ed660ad1c59b9e9fd406e57cc591086cfb09e16180439f51cc1d5b"},"schema_version":"1.0"},"canonical_sha256":"9bebbee957e68146ef7f2714604d5db159f1e84742ff97d67d3bdcf14d22de28","source":{"kind":"arxiv","id":"1501.00062","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.00062","created_at":"2026-05-18T02:29:23Z"},{"alias_kind":"arxiv_version","alias_value":"1501.00062v2","created_at":"2026-05-18T02:29:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.00062","created_at":"2026-05-18T02:29:23Z"},{"alias_kind":"pith_short_12","alias_value":"TPV352KX42AU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"TPV352KX42AUN337","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"TPV352KX","created_at":"2026-05-18T12:28:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:TPV352KX42AUN337E4KGATK5WF","target":"record","payload":{"canonical_record":{"source":{"id":"1501.00062","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-12-31T01:34:56Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"2683fc46781c48a047850aed8a1ce7cf14d057e43c654894483ddce7c1d60482","abstract_canon_sha256":"8fe7f6be54ed660ad1c59b9e9fd406e57cc591086cfb09e16180439f51cc1d5b"},"schema_version":"1.0"},"canonical_sha256":"9bebbee957e68146ef7f2714604d5db159f1e84742ff97d67d3bdcf14d22de28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:29:23.027405Z","signature_b64":"W2V7lprlxFWsm5KT9jnvRbPmICCm/OKA45cZ0jy5NMYLVqIt2n3CUfOHHr5R7dCgh4SyiDMXW3Faclj52yN+Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9bebbee957e68146ef7f2714604d5db159f1e84742ff97d67d3bdcf14d22de28","last_reissued_at":"2026-05-18T02:29:23.026851Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:29:23.026851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.00062","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":"2026-05-18T02:29:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ozwvhvWAMfMVh2XRfmAaV8NUrEPZafiQpsEEfPpkxN5lajV1tO6OqR9W8aNG6HuLKR4TSTr89Y/ZVKzxvIeWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:53:35.228706Z"},"content_sha256":"af21bcfddf69c4b5f87a790bcb99f657a626f0c4676c7406c512bf2c69789f29","schema_version":"1.0","event_id":"sha256:af21bcfddf69c4b5f87a790bcb99f657a626f0c4676c7406c512bf2c69789f29"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:TPV352KX42AUN337E4KGATK5WF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quark angular momentum in a spectator model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Bo-Qiang Ma, Tianbo Liu","submitted_at":"2014-12-31T01:34:56Z","abstract_excerpt":"We investigate the quark angular momentum in a model with the nucleon being a quark and a spectator. Both scalar and axial-vector spectators are included. We perform the calculations in the light-cone formalism where the parton concept is well defined. We calculate the quark helicity and canonical orbital angular momentum. Then we calculate the gravitational form factors which are often related to the kinetic angular momentums, and find that even in a no gauge field model we cannot identify the canonical angular momentums with half the sum of gravitational form factors. In addition, we examine"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.00062","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":"2026-05-18T02:29:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7mOWy0QYWsxQaqnHUwOjvgY9BpOw7JgjMo6T4E/j7VJQjOM5ilxbTg7/qVXWMFEOXlyh5yiCrq3BGhFwbkEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:53:35.229370Z"},"content_sha256":"92371c1b5ec855ad287049cfe363fcefeb8513bb357b5356d8ded7d85a24edd3","schema_version":"1.0","event_id":"sha256:92371c1b5ec855ad287049cfe363fcefeb8513bb357b5356d8ded7d85a24edd3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TPV352KX42AUN337E4KGATK5WF/bundle.json","state_url":"https://pith.science/pith/TPV352KX42AUN337E4KGATK5WF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TPV352KX42AUN337E4KGATK5WF/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":"2026-05-31T16:53:35Z","links":{"resolver":"https://pith.science/pith/TPV352KX42AUN337E4KGATK5WF","bundle":"https://pith.science/pith/TPV352KX42AUN337E4KGATK5WF/bundle.json","state":"https://pith.science/pith/TPV352KX42AUN337E4KGATK5WF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TPV352KX42AUN337E4KGATK5WF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:TPV352KX42AUN337E4KGATK5WF","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":"8fe7f6be54ed660ad1c59b9e9fd406e57cc591086cfb09e16180439f51cc1d5b","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-12-31T01:34:56Z","title_canon_sha256":"2683fc46781c48a047850aed8a1ce7cf14d057e43c654894483ddce7c1d60482"},"schema_version":"1.0","source":{"id":"1501.00062","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.00062","created_at":"2026-05-18T02:29:23Z"},{"alias_kind":"arxiv_version","alias_value":"1501.00062v2","created_at":"2026-05-18T02:29:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.00062","created_at":"2026-05-18T02:29:23Z"},{"alias_kind":"pith_short_12","alias_value":"TPV352KX42AU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"TPV352KX42AUN337","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"TPV352KX","created_at":"2026-05-18T12:28:49Z"}],"graph_snapshots":[{"event_id":"sha256:92371c1b5ec855ad287049cfe363fcefeb8513bb357b5356d8ded7d85a24edd3","target":"graph","created_at":"2026-05-18T02:29:23Z","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":"We investigate the quark angular momentum in a model with the nucleon being a quark and a spectator. Both scalar and axial-vector spectators are included. We perform the calculations in the light-cone formalism where the parton concept is well defined. We calculate the quark helicity and canonical orbital angular momentum. Then we calculate the gravitational form factors which are often related to the kinetic angular momentums, and find that even in a no gauge field model we cannot identify the canonical angular momentums with half the sum of gravitational form factors. In addition, we examine","authors_text":"Bo-Qiang Ma, Tianbo Liu","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-12-31T01:34:56Z","title":"Quark angular momentum in a spectator model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.00062","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:af21bcfddf69c4b5f87a790bcb99f657a626f0c4676c7406c512bf2c69789f29","target":"record","created_at":"2026-05-18T02:29:23Z","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":"8fe7f6be54ed660ad1c59b9e9fd406e57cc591086cfb09e16180439f51cc1d5b","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-12-31T01:34:56Z","title_canon_sha256":"2683fc46781c48a047850aed8a1ce7cf14d057e43c654894483ddce7c1d60482"},"schema_version":"1.0","source":{"id":"1501.00062","kind":"arxiv","version":2}},"canonical_sha256":"9bebbee957e68146ef7f2714604d5db159f1e84742ff97d67d3bdcf14d22de28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9bebbee957e68146ef7f2714604d5db159f1e84742ff97d67d3bdcf14d22de28","first_computed_at":"2026-05-18T02:29:23.026851Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:29:23.026851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W2V7lprlxFWsm5KT9jnvRbPmICCm/OKA45cZ0jy5NMYLVqIt2n3CUfOHHr5R7dCgh4SyiDMXW3Faclj52yN+Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:29:23.027405Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.00062","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:af21bcfddf69c4b5f87a790bcb99f657a626f0c4676c7406c512bf2c69789f29","sha256:92371c1b5ec855ad287049cfe363fcefeb8513bb357b5356d8ded7d85a24edd3"],"state_sha256":"758dc316f2d1c192c5853bf538a3cb7238a2ef3d98f4a41ab1ae6dc9c2e755f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PGaFyB6s8OW/Obc+rROnkEGwfNXRznQAO0XMECd0Tp0L1drySmTJMR9kwRlDVzZSSRSdJlZ0yePZTagAqCg4Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:53:35.232984Z","bundle_sha256":"d665416c1689d4bd01decb372e81b4fcd79f6e40fab2c843e4e712682f626e19"}}