{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:H4IR6WCGUMLTPGGQEHZLALMPLT","short_pith_number":"pith:H4IR6WCG","canonical_record":{"source":{"id":"2006.15945","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-29T11:32:41Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"99ab619756cad778897fdca4941360cb293e717e4fa9ba69905d0c8f8605e526","abstract_canon_sha256":"fc5f37af1ce3cd9101d3be3b274d2c68a9078fd1f4e83de822f25e6743420d8e"},"schema_version":"1.0"},"canonical_sha256":"3f111f5846a3173798d021f2b02d8f5ccff346ff6716ed3ffb3a8e59b061e0fb","source":{"kind":"arxiv","id":"2006.15945","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.15945","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"arxiv_version","alias_value":"2006.15945v1","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15945","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"pith_short_12","alias_value":"H4IR6WCGUMLT","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"pith_short_16","alias_value":"H4IR6WCGUMLTPGGQ","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"pith_short_8","alias_value":"H4IR6WCG","created_at":"2026-07-05T01:32:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:H4IR6WCGUMLTPGGQEHZLALMPLT","target":"record","payload":{"canonical_record":{"source":{"id":"2006.15945","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-29T11:32:41Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"99ab619756cad778897fdca4941360cb293e717e4fa9ba69905d0c8f8605e526","abstract_canon_sha256":"fc5f37af1ce3cd9101d3be3b274d2c68a9078fd1f4e83de822f25e6743420d8e"},"schema_version":"1.0"},"canonical_sha256":"3f111f5846a3173798d021f2b02d8f5ccff346ff6716ed3ffb3a8e59b061e0fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:32:09.529516Z","signature_b64":"5ideyELGXjoZtjV3W6bqk4wwFNNxQgC8V9iEvZy+aHgKx9p5Bhbd3XPwudeOJlmEdYG6Bt0IIR7Tvab4gJxPBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f111f5846a3173798d021f2b02d8f5ccff346ff6716ed3ffb3a8e59b061e0fb","last_reissued_at":"2026-07-05T01:32:09.529033Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:32:09.529033Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.15945","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":"2026-07-05T01:32:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"93OWB5MzRQ39YAVBcBpVxdIXZHBgByAMYsczZTHWP7bIfsa9b5u3amzR6MPypmt8oRmp1lqYrMli+2nxpcbGAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:35:39.526819Z"},"content_sha256":"5efd6adcf1e26a82daa55ba4d1c359a91216ef2830e3f1696a701430caf11065","schema_version":"1.0","event_id":"sha256:5efd6adcf1e26a82daa55ba4d1c359a91216ef2830e3f1696a701430caf11065"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:H4IR6WCGUMLTPGGQEHZLALMPLT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"$Z$-boson decays into an invisible dark photon at the LHC, HL-LHC and future lepton colliders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"B. Mele, C. De Dominicis, E. Gabrielli, G. Panizzo, J. Magro, M. Cobal, M. Fabbrichesi","submitted_at":"2020-06-29T11:32:41Z","abstract_excerpt":"We study the decay of the $Z$ vector boson into a photon and a massless (invisible) dark photon in high-energy collisions. The photon can be used as trigger for the event, while the dark photon is detected indirectly as missing momentum in the event final state. We investigate the possibility of searching for such a dark photon at the LHC, HL-LHC and future lepton colliders, and compare the respective sensitivities. As expected, the best result is found for the lepton colliders running at the $Z$ mass, FCC-ee and CEPC, with a final sensitivity to branching ratios of order $O(10^{-11})$. We als"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15945","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/2006.15945/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":"2026-07-05T01:32:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N9RRSAf8VfMvezzpOG8MYzcisuGb5SNNjfJu7hNcvyXvKivJYWR+gUdP0657cWDZrUjWjANvX0SiOWRnQou2CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:35:39.527211Z"},"content_sha256":"c351ebc579945b79e434bbc4cb96a213de14a872ee952205a6b2eca98b6b49a2","schema_version":"1.0","event_id":"sha256:c351ebc579945b79e434bbc4cb96a213de14a872ee952205a6b2eca98b6b49a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H4IR6WCGUMLTPGGQEHZLALMPLT/bundle.json","state_url":"https://pith.science/pith/H4IR6WCGUMLTPGGQEHZLALMPLT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H4IR6WCGUMLTPGGQEHZLALMPLT/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":"2026-08-03T20:35:39Z","links":{"resolver":"https://pith.science/pith/H4IR6WCGUMLTPGGQEHZLALMPLT","bundle":"https://pith.science/pith/H4IR6WCGUMLTPGGQEHZLALMPLT/bundle.json","state":"https://pith.science/pith/H4IR6WCGUMLTPGGQEHZLALMPLT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H4IR6WCGUMLTPGGQEHZLALMPLT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:H4IR6WCGUMLTPGGQEHZLALMPLT","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":"fc5f37af1ce3cd9101d3be3b274d2c68a9078fd1f4e83de822f25e6743420d8e","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-29T11:32:41Z","title_canon_sha256":"99ab619756cad778897fdca4941360cb293e717e4fa9ba69905d0c8f8605e526"},"schema_version":"1.0","source":{"id":"2006.15945","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.15945","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"arxiv_version","alias_value":"2006.15945v1","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15945","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"pith_short_12","alias_value":"H4IR6WCGUMLT","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"pith_short_16","alias_value":"H4IR6WCGUMLTPGGQ","created_at":"2026-07-05T01:32:09Z"},{"alias_kind":"pith_short_8","alias_value":"H4IR6WCG","created_at":"2026-07-05T01:32:09Z"}],"graph_snapshots":[{"event_id":"sha256:c351ebc579945b79e434bbc4cb96a213de14a872ee952205a6b2eca98b6b49a2","target":"graph","created_at":"2026-07-05T01:32:09Z","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/2006.15945/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the decay of the $Z$ vector boson into a photon and a massless (invisible) dark photon in high-energy collisions. The photon can be used as trigger for the event, while the dark photon is detected indirectly as missing momentum in the event final state. We investigate the possibility of searching for such a dark photon at the LHC, HL-LHC and future lepton colliders, and compare the respective sensitivities. As expected, the best result is found for the lepton colliders running at the $Z$ mass, FCC-ee and CEPC, with a final sensitivity to branching ratios of order $O(10^{-11})$. We als","authors_text":"B. Mele, C. De Dominicis, E. Gabrielli, G. Panizzo, J. Magro, M. Cobal, M. Fabbrichesi","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-29T11:32:41Z","title":"$Z$-boson decays into an invisible dark photon at the LHC, HL-LHC and future lepton colliders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15945","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":"sha256:5efd6adcf1e26a82daa55ba4d1c359a91216ef2830e3f1696a701430caf11065","target":"record","created_at":"2026-07-05T01:32:09Z","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":"fc5f37af1ce3cd9101d3be3b274d2c68a9078fd1f4e83de822f25e6743420d8e","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-29T11:32:41Z","title_canon_sha256":"99ab619756cad778897fdca4941360cb293e717e4fa9ba69905d0c8f8605e526"},"schema_version":"1.0","source":{"id":"2006.15945","kind":"arxiv","version":1}},"canonical_sha256":"3f111f5846a3173798d021f2b02d8f5ccff346ff6716ed3ffb3a8e59b061e0fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f111f5846a3173798d021f2b02d8f5ccff346ff6716ed3ffb3a8e59b061e0fb","first_computed_at":"2026-07-05T01:32:09.529033Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:32:09.529033Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5ideyELGXjoZtjV3W6bqk4wwFNNxQgC8V9iEvZy+aHgKx9p5Bhbd3XPwudeOJlmEdYG6Bt0IIR7Tvab4gJxPBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:32:09.529516Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.15945","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5efd6adcf1e26a82daa55ba4d1c359a91216ef2830e3f1696a701430caf11065","sha256:c351ebc579945b79e434bbc4cb96a213de14a872ee952205a6b2eca98b6b49a2"],"state_sha256":"8b43620a2a1aa3c4b5c17c727e4dc57b463980f453a0ad18ca886a44d4ef8b8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MhILeG+MKSpJugpbSAN6Sztj3BE1aEr572DubR1Uf0wajWfJMbjlWhNX0MGBpUeSIueyeuczAPFeIr/X15cVDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T20:35:39.530077Z","bundle_sha256":"0be9c1d22b050393d0e5eb5edfcafb089d53b9289907626713febf4e9cdc5079"}}