{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:7SV2O7ESIM4V2WQQI43PGGTOZO","short_pith_number":"pith:7SV2O7ES","canonical_record":{"source":{"id":"2506.09094","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-06-10T11:44:19Z","cross_cats_sorted":[],"title_canon_sha256":"612344bda1b6bf845dbabede82c3cb3be47813f3bf1c2a8c8bd37d84df339849","abstract_canon_sha256":"27f313c0923eaefc4259e9d065e4e4372388f2be60c687fcf7507368b0ea49a2"},"schema_version":"1.0"},"canonical_sha256":"fcaba77c9243395d5a104736f31a6ecb9acdf07a353a84f432111c7c0c9014a6","source":{"kind":"arxiv","id":"2506.09094","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.09094","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"arxiv_version","alias_value":"2506.09094v1","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.09094","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"pith_short_12","alias_value":"7SV2O7ESIM4V","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"pith_short_16","alias_value":"7SV2O7ESIM4V2WQQ","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"pith_short_8","alias_value":"7SV2O7ES","created_at":"2026-07-05T11:19:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:7SV2O7ESIM4V2WQQI43PGGTOZO","target":"record","payload":{"canonical_record":{"source":{"id":"2506.09094","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-06-10T11:44:19Z","cross_cats_sorted":[],"title_canon_sha256":"612344bda1b6bf845dbabede82c3cb3be47813f3bf1c2a8c8bd37d84df339849","abstract_canon_sha256":"27f313c0923eaefc4259e9d065e4e4372388f2be60c687fcf7507368b0ea49a2"},"schema_version":"1.0"},"canonical_sha256":"fcaba77c9243395d5a104736f31a6ecb9acdf07a353a84f432111c7c0c9014a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:19:31.329191Z","signature_b64":"sOxVp9mVPud/lGCfDfanpOPBhJCNA/SLfrCjRiwiUcvldEBudxC4m4yCEs8ijAH80/G4lrfkKKG0TLaVkQE/AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcaba77c9243395d5a104736f31a6ecb9acdf07a353a84f432111c7c0c9014a6","last_reissued_at":"2026-07-05T11:19:31.328785Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:19:31.328785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.09094","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":"2026-07-05T11:19:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"miEzHaSx9PKYevn2ql2Fwz+8zbthf/RS6OW9qtq5zCxQsoycRq9TYkDk8scNBINKniXoz+lZNagohOAyy/1hBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T01:40:00.950807Z"},"content_sha256":"9046b5a225f4a6e7a7e2e727e897717b95a28d2a4daa58a9ee519deb3fdb873a","schema_version":"1.0","event_id":"sha256:9046b5a225f4a6e7a7e2e727e897717b95a28d2a4daa58a9ee519deb3fdb873a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:7SV2O7ESIM4V2WQQI43PGGTOZO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Equivalence of two component spinor mechanism and four component spinor mechanism in top quark pair production","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Anuradha Misra, Malvika Deo, Radhika Vinze, Sharada Subramanian","submitted_at":"2025-06-10T11:44:19Z","abstract_excerpt":"We calculate the $S$-matrix elements for the process $e^{+} e^{-}\\rightarrow t \\bar{t}$ mediated by SM photon, $Z$ boson and an additional $Z^{'}$ boson indicating the contribution from new physics. We calculate the amplitude square using two component spinor formalism and four component spinor formalism and show the equivalance of the results using the two formalisms. We also establish the relations between the couplings of $Z^{'}$ boson to fermions in the two component spinor formalism and in the four component spinor formalism."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.09094","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2506.09094/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:19:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wBmb2qx4BuQIKnlvYY8cC4xyj54KMR4NMiOzCfQDXK3UUsgHo5HD57Ki5gGBc5HWRNwlNDQB1XqoLatIq3K1Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T01:40:00.951451Z"},"content_sha256":"b8b4807893a330dd26944c57353c3668f9669705fe3817aecc19ab50fa12f395","schema_version":"1.0","event_id":"sha256:b8b4807893a330dd26944c57353c3668f9669705fe3817aecc19ab50fa12f395"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7SV2O7ESIM4V2WQQI43PGGTOZO/bundle.json","state_url":"https://pith.science/pith/7SV2O7ESIM4V2WQQI43PGGTOZO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7SV2O7ESIM4V2WQQI43PGGTOZO/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":"2026-08-09T01:40:00Z","links":{"resolver":"https://pith.science/pith/7SV2O7ESIM4V2WQQI43PGGTOZO","bundle":"https://pith.science/pith/7SV2O7ESIM4V2WQQI43PGGTOZO/bundle.json","state":"https://pith.science/pith/7SV2O7ESIM4V2WQQI43PGGTOZO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7SV2O7ESIM4V2WQQI43PGGTOZO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:7SV2O7ESIM4V2WQQI43PGGTOZO","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":"27f313c0923eaefc4259e9d065e4e4372388f2be60c687fcf7507368b0ea49a2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-06-10T11:44:19Z","title_canon_sha256":"612344bda1b6bf845dbabede82c3cb3be47813f3bf1c2a8c8bd37d84df339849"},"schema_version":"1.0","source":{"id":"2506.09094","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.09094","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"arxiv_version","alias_value":"2506.09094v1","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.09094","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"pith_short_12","alias_value":"7SV2O7ESIM4V","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"pith_short_16","alias_value":"7SV2O7ESIM4V2WQQ","created_at":"2026-07-05T11:19:31Z"},{"alias_kind":"pith_short_8","alias_value":"7SV2O7ES","created_at":"2026-07-05T11:19:31Z"}],"graph_snapshots":[{"event_id":"sha256:b8b4807893a330dd26944c57353c3668f9669705fe3817aecc19ab50fa12f395","target":"graph","created_at":"2026-07-05T11:19:31Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2506.09094/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We calculate the $S$-matrix elements for the process $e^{+} e^{-}\\rightarrow t \\bar{t}$ mediated by SM photon, $Z$ boson and an additional $Z^{'}$ boson indicating the contribution from new physics. We calculate the amplitude square using two component spinor formalism and four component spinor formalism and show the equivalance of the results using the two formalisms. We also establish the relations between the couplings of $Z^{'}$ boson to fermions in the two component spinor formalism and in the four component spinor formalism.","authors_text":"Anuradha Misra, Malvika Deo, Radhika Vinze, Sharada Subramanian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-06-10T11:44:19Z","title":"Equivalence of two component spinor mechanism and four component spinor mechanism in top quark pair production"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.09094","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":"sha256:9046b5a225f4a6e7a7e2e727e897717b95a28d2a4daa58a9ee519deb3fdb873a","target":"record","created_at":"2026-07-05T11:19:31Z","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":"27f313c0923eaefc4259e9d065e4e4372388f2be60c687fcf7507368b0ea49a2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-06-10T11:44:19Z","title_canon_sha256":"612344bda1b6bf845dbabede82c3cb3be47813f3bf1c2a8c8bd37d84df339849"},"schema_version":"1.0","source":{"id":"2506.09094","kind":"arxiv","version":1}},"canonical_sha256":"fcaba77c9243395d5a104736f31a6ecb9acdf07a353a84f432111c7c0c9014a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fcaba77c9243395d5a104736f31a6ecb9acdf07a353a84f432111c7c0c9014a6","first_computed_at":"2026-07-05T11:19:31.328785Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:19:31.328785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sOxVp9mVPud/lGCfDfanpOPBhJCNA/SLfrCjRiwiUcvldEBudxC4m4yCEs8ijAH80/G4lrfkKKG0TLaVkQE/AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:19:31.329191Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.09094","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9046b5a225f4a6e7a7e2e727e897717b95a28d2a4daa58a9ee519deb3fdb873a","sha256:b8b4807893a330dd26944c57353c3668f9669705fe3817aecc19ab50fa12f395"],"state_sha256":"810d20ac37462a0ccc9ed708933e00314a6a6be49adb620b6450928133fa257e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U4hp4or8G9Od766gUEeGZM/YsazT2YCEwPfVkR45/s4/cJQUUfN+fn1Eeq1OJtwAsvIBfYixdpBrU6sYCuiZAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T01:40:00.956037Z","bundle_sha256":"f6994759e7a1eb0f29fb62011973bfc78d417f1fd3385d3b97cbcdf8e7fa57e6"}}