{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:4UIK2HLTP6YU2NR32OWYQHB3GI","short_pith_number":"pith:4UIK2HLT","canonical_record":{"source":{"id":"2112.09979","kind":"arxiv","version":5},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-18T18:01:48Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"a24cc4d81d10fe1ea7d9583ecfc024d0fbbb3b43d9a02dd85850ef070f18158e","abstract_canon_sha256":"311df9ad0d5cb2fb0a9a07ecdf9fa37e24fac0801c0d790f19df937a5f10e385"},"schema_version":"1.0"},"canonical_sha256":"e510ad1d737fb14d363bd3ad881c3b32294cd32561c1240648ec9179d6e34f77","source":{"kind":"arxiv","id":"2112.09979","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.09979","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"arxiv_version","alias_value":"2112.09979v5","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.09979","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"pith_short_12","alias_value":"4UIK2HLTP6YU","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"pith_short_16","alias_value":"4UIK2HLTP6YU2NR3","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"pith_short_8","alias_value":"4UIK2HLT","created_at":"2026-07-05T06:14:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:4UIK2HLTP6YU2NR32OWYQHB3GI","target":"record","payload":{"canonical_record":{"source":{"id":"2112.09979","kind":"arxiv","version":5},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-18T18:01:48Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"a24cc4d81d10fe1ea7d9583ecfc024d0fbbb3b43d9a02dd85850ef070f18158e","abstract_canon_sha256":"311df9ad0d5cb2fb0a9a07ecdf9fa37e24fac0801c0d790f19df937a5f10e385"},"schema_version":"1.0"},"canonical_sha256":"e510ad1d737fb14d363bd3ad881c3b32294cd32561c1240648ec9179d6e34f77","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:14:03.449425Z","signature_b64":"2I2REuMeVC7gs/xJBFWr3x5TsV34/xIrDzFTrjB1zlcQmOKGvNdiIHjsMmACXC4jM7hiZBU5YhubiVMKEjLnAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e510ad1d737fb14d363bd3ad881c3b32294cd32561c1240648ec9179d6e34f77","last_reissued_at":"2026-07-05T06:14:03.448957Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:14:03.448957Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.09979","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:14:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KYRFPOi9/I8J7ehRyk7IKt+KFtF0ftTorEdM249N0dWPY+ZpjtaPTSeXYdpDqwWUDv5JkERCevK6ovZ5zKHSCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:24:36.698686Z"},"content_sha256":"e738e224fdcb60a1d9fbcd90846159705e765b3129c2e3ba54e14cbcd74dd6bc","schema_version":"1.0","event_id":"sha256:e738e224fdcb60a1d9fbcd90846159705e765b3129c2e3ba54e14cbcd74dd6bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:4UIK2HLTP6YU2NR32OWYQHB3GI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prospects for detecting axionlike particles at the Coherent CAPTAIN-Mills experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"A.A. Aguilar-Arevalo, A. Diaz, A.M. Szelc, A. Schneider, A. Thompson, B. Dutta, C. Taylor, D. Fields, D. Kim, D. Newmark, D. Poulson, D.S.M. Alves, D. Smith, E.C. Huang, E. Dunton, E. Guardincerri, E. Renner, H. Ray, J. Boissevain, J.C. D'Olivo, J.M. Conrad, J. Mirabal, J.R. Distel, J.R. Gochanour, J.T.M. Lyles, K. Knickerbocker, L. Bugel, M. Borrego, M. Chavez-Estrada, M. Gold, M.H. Shaevitz, M. Tripathi, N. Kamp, N. Mishra, P. deNiverville, R.G. Van de Water, R.L. Cooper, R. Mahapatra, R.T. Thornton, R. Van Berg, S. Biedron, S. Maludze, S. Verma, T.J. Schaub, V. Pandey, W.C. Louis, W.H. Thompson, W. Sondheim","submitted_at":"2021-12-18T18:01:48Z","abstract_excerpt":"We show results from the Coherent CAPTAIN Mills (CCM) 2019 engineering run which begin to constrain regions of parameter space for axion-like particles (ALPs) produced in electromagnetic particle showers in an 800 MeV proton beam dump, and further investigate the sensitivity of ongoing data-taking campaigns for the CCM200 upgraded detector. Based on beam-on background estimates from the engineering run, we make realistic extrapolations for background reduction based on expected shielding improvements, reduced beam width, and analysis-based techniques for background rejection. We obtain reach p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.09979","kind":"arxiv","version":5},"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/2112.09979/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":"2026-07-05T06:14:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hyL6AsVl9YlbajW1qYaN1UTIFb223sdIcW8VLx3C8Wlp3JeYthwjWyvVSyptvy7/QMHalNpcZWw9vcHi8mXTAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:24:36.699069Z"},"content_sha256":"282e86e2d6a79eae73be420cd0d9f19a2df7cc6a98bdf04d22d4709cf034b6c8","schema_version":"1.0","event_id":"sha256:282e86e2d6a79eae73be420cd0d9f19a2df7cc6a98bdf04d22d4709cf034b6c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4UIK2HLTP6YU2NR32OWYQHB3GI/bundle.json","state_url":"https://pith.science/pith/4UIK2HLTP6YU2NR32OWYQHB3GI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4UIK2HLTP6YU2NR32OWYQHB3GI/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":"2026-07-06T16:24:36Z","links":{"resolver":"https://pith.science/pith/4UIK2HLTP6YU2NR32OWYQHB3GI","bundle":"https://pith.science/pith/4UIK2HLTP6YU2NR32OWYQHB3GI/bundle.json","state":"https://pith.science/pith/4UIK2HLTP6YU2NR32OWYQHB3GI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4UIK2HLTP6YU2NR32OWYQHB3GI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:4UIK2HLTP6YU2NR32OWYQHB3GI","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":"311df9ad0d5cb2fb0a9a07ecdf9fa37e24fac0801c0d790f19df937a5f10e385","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-18T18:01:48Z","title_canon_sha256":"a24cc4d81d10fe1ea7d9583ecfc024d0fbbb3b43d9a02dd85850ef070f18158e"},"schema_version":"1.0","source":{"id":"2112.09979","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.09979","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"arxiv_version","alias_value":"2112.09979v5","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.09979","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"pith_short_12","alias_value":"4UIK2HLTP6YU","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"pith_short_16","alias_value":"4UIK2HLTP6YU2NR3","created_at":"2026-07-05T06:14:03Z"},{"alias_kind":"pith_short_8","alias_value":"4UIK2HLT","created_at":"2026-07-05T06:14:03Z"}],"graph_snapshots":[{"event_id":"sha256:282e86e2d6a79eae73be420cd0d9f19a2df7cc6a98bdf04d22d4709cf034b6c8","target":"graph","created_at":"2026-07-05T06:14:03Z","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/2112.09979/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show results from the Coherent CAPTAIN Mills (CCM) 2019 engineering run which begin to constrain regions of parameter space for axion-like particles (ALPs) produced in electromagnetic particle showers in an 800 MeV proton beam dump, and further investigate the sensitivity of ongoing data-taking campaigns for the CCM200 upgraded detector. Based on beam-on background estimates from the engineering run, we make realistic extrapolations for background reduction based on expected shielding improvements, reduced beam width, and analysis-based techniques for background rejection. We obtain reach p","authors_text":"A.A. Aguilar-Arevalo, A. Diaz, A.M. Szelc, A. Schneider, A. Thompson, B. Dutta, C. Taylor, D. Fields, D. Kim, D. Newmark, D. Poulson, D.S.M. Alves, D. Smith, E.C. Huang, E. Dunton, E. Guardincerri, E. Renner, H. Ray, J. Boissevain, J.C. D'Olivo, J.M. Conrad, J. Mirabal, J.R. Distel, J.R. Gochanour, J.T.M. Lyles, K. Knickerbocker, L. Bugel, M. Borrego, M. Chavez-Estrada, M. Gold, M.H. Shaevitz, M. Tripathi, N. Kamp, N. Mishra, P. deNiverville, R.G. Van de Water, R.L. Cooper, R. Mahapatra, R.T. Thornton, R. Van Berg, S. Biedron, S. Maludze, S. Verma, T.J. Schaub, V. Pandey, W.C. Louis, W.H. Thompson, W. Sondheim","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-18T18:01:48Z","title":"Prospects for detecting axionlike particles at the Coherent CAPTAIN-Mills experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.09979","kind":"arxiv","version":5},"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:e738e224fdcb60a1d9fbcd90846159705e765b3129c2e3ba54e14cbcd74dd6bc","target":"record","created_at":"2026-07-05T06:14:03Z","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":"311df9ad0d5cb2fb0a9a07ecdf9fa37e24fac0801c0d790f19df937a5f10e385","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-18T18:01:48Z","title_canon_sha256":"a24cc4d81d10fe1ea7d9583ecfc024d0fbbb3b43d9a02dd85850ef070f18158e"},"schema_version":"1.0","source":{"id":"2112.09979","kind":"arxiv","version":5}},"canonical_sha256":"e510ad1d737fb14d363bd3ad881c3b32294cd32561c1240648ec9179d6e34f77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e510ad1d737fb14d363bd3ad881c3b32294cd32561c1240648ec9179d6e34f77","first_computed_at":"2026-07-05T06:14:03.448957Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:14:03.448957Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2I2REuMeVC7gs/xJBFWr3x5TsV34/xIrDzFTrjB1zlcQmOKGvNdiIHjsMmACXC4jM7hiZBU5YhubiVMKEjLnAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:14:03.449425Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.09979","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e738e224fdcb60a1d9fbcd90846159705e765b3129c2e3ba54e14cbcd74dd6bc","sha256:282e86e2d6a79eae73be420cd0d9f19a2df7cc6a98bdf04d22d4709cf034b6c8"],"state_sha256":"d27ca03527030cba5308503be9f91aa692b8d4dc8fcbf176daff83633770d14b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rFYBgwriT5yJ2kfUBmOfZwSiLpSeGvs7WkDOuadVFfIJqcSdMHihpBzYqgVtJxAXxuRfLD1wgIOOx6urUwoyAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T16:24:36.701088Z","bundle_sha256":"2e94d2c177cefc87231ff4d5eba826b142b90c2abb18800330d93f1f875b21bb"}}