{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KPOVWIU4HZAKVO5JYVLSMH3M3J","short_pith_number":"pith:KPOVWIU4","canonical_record":{"source":{"id":"2012.03699","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2020-12-07T13:56:44Z","cross_cats_sorted":[],"title_canon_sha256":"f1fb9a32edc04a6328b7a7aea06536f7c5f2a4f9856cc67b4e7f2953d47dcbd1","abstract_canon_sha256":"c2b4d6d6d6183be862ad1810ef394b8c8d551feb28ec8ce85065163283e3f6b2"},"schema_version":"1.0"},"canonical_sha256":"53dd5b229c3e40aabba9c557261f6cda4d2054da2b5413fac4037ff4bcb71c00","source":{"kind":"arxiv","id":"2012.03699","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.03699","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"2012.03699v1","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.03699","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"KPOVWIU4HZAK","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"KPOVWIU4HZAKVO5J","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"KPOVWIU4","created_at":"2026-07-05T02:55:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KPOVWIU4HZAKVO5JYVLSMH3M3J","target":"record","payload":{"canonical_record":{"source":{"id":"2012.03699","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2020-12-07T13:56:44Z","cross_cats_sorted":[],"title_canon_sha256":"f1fb9a32edc04a6328b7a7aea06536f7c5f2a4f9856cc67b4e7f2953d47dcbd1","abstract_canon_sha256":"c2b4d6d6d6183be862ad1810ef394b8c8d551feb28ec8ce85065163283e3f6b2"},"schema_version":"1.0"},"canonical_sha256":"53dd5b229c3e40aabba9c557261f6cda4d2054da2b5413fac4037ff4bcb71c00","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:55:09.538027Z","signature_b64":"H44s5+W5in0Dp1moeIH1eV7owj2J3lyRMFu6BIPtcAQh89F5Kt2zCZ5B2hAqHaKeR1/Dxtvh6hDZS0boaNdpAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53dd5b229c3e40aabba9c557261f6cda4d2054da2b5413fac4037ff4bcb71c00","last_reissued_at":"2026-07-05T02:55:09.537558Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:55:09.537558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.03699","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":"2026-07-05T02:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Botm9CBKULlfaBQQ3SCykLoiD9vGHyQW9FyBkUJ9//84iUS325BjMj4fN7OuqfU2YoWlw4LF+FjJSBdFBw6QDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:33:53.357014Z"},"content_sha256":"d60b427106cac822ccfa45c8a192482dcad99beebcbffc372de7cfed1eb9d1b6","schema_version":"1.0","event_id":"sha256:d60b427106cac822ccfa45c8a192482dcad99beebcbffc372de7cfed1eb9d1b6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KPOVWIU4HZAKVO5JYVLSMH3M3J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A novel method to test particle ordering and final state alignment in helicity formalism","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Liming Zhang, Mengzhen Wang, Wenbin Qian, Xiaorui Lyu, Yi Jiang, Yinrui Liu","submitted_at":"2020-12-07T13:56:44Z","abstract_excerpt":"In this article, the importance is demonstrated of a proper choice of reference particles for decay angle definitions, when constructing partial-wave amplitude of multi-body decays using helicity formalism. This issue is often ignored in the standard use case of the helicity formalism. A new technique is proposed to determine the correct particle ordering, and can also be used as a generalized method to calculate the rotation operators used for the final-state alignment between different decay chains. Numerical validations are also performed to support the arguments and new technique proposed "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.03699","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/2012.03699/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":"2026-07-05T02:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Y5sv7GyjXArbQ2vT53IfVoXqY8a0uhOzDG5ypoIA236xfH5SaYghrHmDpLEVhxnx1yfhBR1UpMWYw2iI7zbDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:33:53.357508Z"},"content_sha256":"5b0099d51323e215408f02b73616a02eaae339b3e3feafa8a5d13596d143a0c8","schema_version":"1.0","event_id":"sha256:5b0099d51323e215408f02b73616a02eaae339b3e3feafa8a5d13596d143a0c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KPOVWIU4HZAKVO5JYVLSMH3M3J/bundle.json","state_url":"https://pith.science/pith/KPOVWIU4HZAKVO5JYVLSMH3M3J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KPOVWIU4HZAKVO5JYVLSMH3M3J/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":"2026-08-06T21:33:53Z","links":{"resolver":"https://pith.science/pith/KPOVWIU4HZAKVO5JYVLSMH3M3J","bundle":"https://pith.science/pith/KPOVWIU4HZAKVO5JYVLSMH3M3J/bundle.json","state":"https://pith.science/pith/KPOVWIU4HZAKVO5JYVLSMH3M3J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KPOVWIU4HZAKVO5JYVLSMH3M3J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KPOVWIU4HZAKVO5JYVLSMH3M3J","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":"c2b4d6d6d6183be862ad1810ef394b8c8d551feb28ec8ce85065163283e3f6b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2020-12-07T13:56:44Z","title_canon_sha256":"f1fb9a32edc04a6328b7a7aea06536f7c5f2a4f9856cc67b4e7f2953d47dcbd1"},"schema_version":"1.0","source":{"id":"2012.03699","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.03699","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"2012.03699v1","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.03699","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"KPOVWIU4HZAK","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"KPOVWIU4HZAKVO5J","created_at":"2026-07-05T02:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"KPOVWIU4","created_at":"2026-07-05T02:55:09Z"}],"graph_snapshots":[{"event_id":"sha256:5b0099d51323e215408f02b73616a02eaae339b3e3feafa8a5d13596d143a0c8","target":"graph","created_at":"2026-07-05T02:55:09Z","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/2012.03699/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this article, the importance is demonstrated of a proper choice of reference particles for decay angle definitions, when constructing partial-wave amplitude of multi-body decays using helicity formalism. This issue is often ignored in the standard use case of the helicity formalism. A new technique is proposed to determine the correct particle ordering, and can also be used as a generalized method to calculate the rotation operators used for the final-state alignment between different decay chains. Numerical validations are also performed to support the arguments and new technique proposed ","authors_text":"Liming Zhang, Mengzhen Wang, Wenbin Qian, Xiaorui Lyu, Yi Jiang, Yinrui Liu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2020-12-07T13:56:44Z","title":"A novel method to test particle ordering and final state alignment in helicity formalism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.03699","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:d60b427106cac822ccfa45c8a192482dcad99beebcbffc372de7cfed1eb9d1b6","target":"record","created_at":"2026-07-05T02:55:09Z","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":"c2b4d6d6d6183be862ad1810ef394b8c8d551feb28ec8ce85065163283e3f6b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2020-12-07T13:56:44Z","title_canon_sha256":"f1fb9a32edc04a6328b7a7aea06536f7c5f2a4f9856cc67b4e7f2953d47dcbd1"},"schema_version":"1.0","source":{"id":"2012.03699","kind":"arxiv","version":1}},"canonical_sha256":"53dd5b229c3e40aabba9c557261f6cda4d2054da2b5413fac4037ff4bcb71c00","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53dd5b229c3e40aabba9c557261f6cda4d2054da2b5413fac4037ff4bcb71c00","first_computed_at":"2026-07-05T02:55:09.537558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:55:09.537558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H44s5+W5in0Dp1moeIH1eV7owj2J3lyRMFu6BIPtcAQh89F5Kt2zCZ5B2hAqHaKeR1/Dxtvh6hDZS0boaNdpAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:55:09.538027Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.03699","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d60b427106cac822ccfa45c8a192482dcad99beebcbffc372de7cfed1eb9d1b6","sha256:5b0099d51323e215408f02b73616a02eaae339b3e3feafa8a5d13596d143a0c8"],"state_sha256":"fb117881018f870681802e95332d5a3e7240086a4776118075ad60456bdfb3ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tDsORyafyZnwxQxtClfJatpMmVCGomLIgKSFOoKgVHvmWnULo84KO7Upp3Q7RKxfmIcLw3Zb1h/Tsdt7VKP8Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T21:33:53.362468Z","bundle_sha256":"a325c2c3ecaad8abdb745f9034ba2702874cdd5aefe1f07657880a3321897cdc"}}