{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:IYOR2SUHEXMGMVLZRSQYDEOWAL","short_pith_number":"pith:IYOR2SUH","canonical_record":{"source":{"id":"1912.00422","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-12-01T15:03:42Z","cross_cats_sorted":[],"title_canon_sha256":"0d25bacb820d74745b7051c3f2dd0dcab3c054d165319ca04bc5ff152b4cc962","abstract_canon_sha256":"2935b4b51bc8b1fff249e7feee6a6b58e5116e96ef7eb4a36f8c34d8e25ee440"},"schema_version":"1.0"},"canonical_sha256":"461d1d4a8725d86655798ca18191d602e88d24a327462825fd2bb5f0c4f7d51c","source":{"kind":"arxiv","id":"1912.00422","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.00422","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"1912.00422v2","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.00422","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"IYOR2SUHEXMG","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"IYOR2SUHEXMGMVLZ","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"IYOR2SUH","created_at":"2026-07-05T07:27:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:IYOR2SUHEXMGMVLZRSQYDEOWAL","target":"record","payload":{"canonical_record":{"source":{"id":"1912.00422","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-12-01T15:03:42Z","cross_cats_sorted":[],"title_canon_sha256":"0d25bacb820d74745b7051c3f2dd0dcab3c054d165319ca04bc5ff152b4cc962","abstract_canon_sha256":"2935b4b51bc8b1fff249e7feee6a6b58e5116e96ef7eb4a36f8c34d8e25ee440"},"schema_version":"1.0"},"canonical_sha256":"461d1d4a8725d86655798ca18191d602e88d24a327462825fd2bb5f0c4f7d51c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:27:22.127296Z","signature_b64":"Dkw6BXcvZAjM9aFdXmAcOPQmwo0WifbPZjyAfBcjk+bqv5J5f3V8OLQSq/iRfOv4K8xol3mFMWc68QM4VuTSDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"461d1d4a8725d86655798ca18191d602e88d24a327462825fd2bb5f0c4f7d51c","last_reissued_at":"2026-07-05T07:27:22.126804Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:27:22.126804Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.00422","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":"2026-07-05T07:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MRGxedCLPTNkYPlsWCc4Ujz5n54bddmgWcKdX2055/eQ4QbSjDxbjThjgzuF8wKSBjSYkgMlLHDkvv64Sm1aDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T06:32:01.936507Z"},"content_sha256":"88e9873215b4aad2386c25ca45f3d89c7fc9c45c8eb9e61fe3796fba80c6871a","schema_version":"1.0","event_id":"sha256:88e9873215b4aad2386c25ca45f3d89c7fc9c45c8eb9e61fe3796fba80c6871a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:IYOR2SUHEXMGMVLZRSQYDEOWAL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced Long-Lived Dark Photon Signals at the LHC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Mingxuan Du, Van Que Tran, Zuowei Liu","submitted_at":"2019-12-01T15:03:42Z","abstract_excerpt":"We construct a model in which the standard model is extended by a hidden sector with two gauge $U(1)$ bosons. A Dirac fermion $\\psi$ charged under both $U(1)$ fields is introduced in the hidden sector which can be a subcomponent of the dark matter in the Universe. Stueckelberg mass terms between the two new gauge $U(1)$ fields and the hypercharge gauge boson mediate the interactions between the standard model sector and the hidden sector. A remarkable collider signature of this model is the enhanced long-lived dark photon events at the LHC than the conventional dark photon models; the long-liv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.00422","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1912.00422/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":"2026-07-05T07:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lHQpfOgtYy9dv5Jy3tCiOC1U+AL6pvs+kjtPYckEWIibkipRVSNNbz6l7HsaKHxiC9ujnP/3pXqGhodZDzuJAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T06:32:01.937078Z"},"content_sha256":"05df5af78d546e0b6421935609026005e9cb3d6e683afcc1b7cde156c57cbc4f","schema_version":"1.0","event_id":"sha256:05df5af78d546e0b6421935609026005e9cb3d6e683afcc1b7cde156c57cbc4f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IYOR2SUHEXMGMVLZRSQYDEOWAL/bundle.json","state_url":"https://pith.science/pith/IYOR2SUHEXMGMVLZRSQYDEOWAL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IYOR2SUHEXMGMVLZRSQYDEOWAL/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":"2026-08-12T06:32:01Z","links":{"resolver":"https://pith.science/pith/IYOR2SUHEXMGMVLZRSQYDEOWAL","bundle":"https://pith.science/pith/IYOR2SUHEXMGMVLZRSQYDEOWAL/bundle.json","state":"https://pith.science/pith/IYOR2SUHEXMGMVLZRSQYDEOWAL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IYOR2SUHEXMGMVLZRSQYDEOWAL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IYOR2SUHEXMGMVLZRSQYDEOWAL","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":"2935b4b51bc8b1fff249e7feee6a6b58e5116e96ef7eb4a36f8c34d8e25ee440","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-12-01T15:03:42Z","title_canon_sha256":"0d25bacb820d74745b7051c3f2dd0dcab3c054d165319ca04bc5ff152b4cc962"},"schema_version":"1.0","source":{"id":"1912.00422","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.00422","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"1912.00422v2","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.00422","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"IYOR2SUHEXMG","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"IYOR2SUHEXMGMVLZ","created_at":"2026-07-05T07:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"IYOR2SUH","created_at":"2026-07-05T07:27:22Z"}],"graph_snapshots":[{"event_id":"sha256:05df5af78d546e0b6421935609026005e9cb3d6e683afcc1b7cde156c57cbc4f","target":"graph","created_at":"2026-07-05T07:27:22Z","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/1912.00422/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We construct a model in which the standard model is extended by a hidden sector with two gauge $U(1)$ bosons. A Dirac fermion $\\psi$ charged under both $U(1)$ fields is introduced in the hidden sector which can be a subcomponent of the dark matter in the Universe. Stueckelberg mass terms between the two new gauge $U(1)$ fields and the hypercharge gauge boson mediate the interactions between the standard model sector and the hidden sector. A remarkable collider signature of this model is the enhanced long-lived dark photon events at the LHC than the conventional dark photon models; the long-liv","authors_text":"Mingxuan Du, Van Que Tran, Zuowei Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-12-01T15:03:42Z","title":"Enhanced Long-Lived Dark Photon Signals at the LHC"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.00422","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":"sha256:88e9873215b4aad2386c25ca45f3d89c7fc9c45c8eb9e61fe3796fba80c6871a","target":"record","created_at":"2026-07-05T07:27:22Z","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":"2935b4b51bc8b1fff249e7feee6a6b58e5116e96ef7eb4a36f8c34d8e25ee440","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-12-01T15:03:42Z","title_canon_sha256":"0d25bacb820d74745b7051c3f2dd0dcab3c054d165319ca04bc5ff152b4cc962"},"schema_version":"1.0","source":{"id":"1912.00422","kind":"arxiv","version":2}},"canonical_sha256":"461d1d4a8725d86655798ca18191d602e88d24a327462825fd2bb5f0c4f7d51c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"461d1d4a8725d86655798ca18191d602e88d24a327462825fd2bb5f0c4f7d51c","first_computed_at":"2026-07-05T07:27:22.126804Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:27:22.126804Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Dkw6BXcvZAjM9aFdXmAcOPQmwo0WifbPZjyAfBcjk+bqv5J5f3V8OLQSq/iRfOv4K8xol3mFMWc68QM4VuTSDg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:27:22.127296Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.00422","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88e9873215b4aad2386c25ca45f3d89c7fc9c45c8eb9e61fe3796fba80c6871a","sha256:05df5af78d546e0b6421935609026005e9cb3d6e683afcc1b7cde156c57cbc4f"],"state_sha256":"a166dc096cf77f055752609891cb38f41daa99876873397bcdbd1fef7fecec43"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Th04PS/SQPAytaHmWaISz+lQt/Dxi2of3TsrxhHI16tkxtr2JnPFD3TJJjzneBsaDoUbVp+tEhXXkPpuqj9WCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T06:32:01.940770Z","bundle_sha256":"3e67cfee41681eb8947a097e3a96ddd7fd8e1eb6320369ae4751c7d55db9d598"}}