{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:QESDVKYRLBIYJLTFXTCHS76FCM","short_pith_number":"pith:QESDVKYR","canonical_record":{"source":{"id":"1403.3041","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-03-12T17:37:39Z","cross_cats_sorted":["hep-ex","hep-ph"],"title_canon_sha256":"0c27b72dce49b737e2220dc71f092d705d5cc613c8bb8b4bca22e45adf680087","abstract_canon_sha256":"965f8d34b6d56829254679dee2833741252cbc2f13dd177b01299ee6b446282b"},"schema_version":"1.0"},"canonical_sha256":"81243aab11585184ae65bcc4797fc5133fcb82c22687391f580d49cab70f35fb","source":{"kind":"arxiv","id":"1403.3041","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.3041","created_at":"2026-05-18T02:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"1403.3041v2","created_at":"2026-05-18T02:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.3041","created_at":"2026-05-18T02:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"QESDVKYRLBIY","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"QESDVKYRLBIYJLTF","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"QESDVKYR","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:QESDVKYRLBIYJLTFXTCHS76FCM","target":"record","payload":{"canonical_record":{"source":{"id":"1403.3041","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-03-12T17:37:39Z","cross_cats_sorted":["hep-ex","hep-ph"],"title_canon_sha256":"0c27b72dce49b737e2220dc71f092d705d5cc613c8bb8b4bca22e45adf680087","abstract_canon_sha256":"965f8d34b6d56829254679dee2833741252cbc2f13dd177b01299ee6b446282b"},"schema_version":"1.0"},"canonical_sha256":"81243aab11585184ae65bcc4797fc5133fcb82c22687391f580d49cab70f35fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:47:31.269760Z","signature_b64":"N64Np9ZxBZTpeAwQVfpRTDaK1xn8NTOriAv/tjuCZNZFBSgB9uTNT9anODYEMQyf4qvms8SyTbI7Jj2tlIK5BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81243aab11585184ae65bcc4797fc5133fcb82c22687391f580d49cab70f35fb","last_reissued_at":"2026-05-18T02:47:31.269188Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:47:31.269188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.3041","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":"2026-05-18T02:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"snnpQOExPzL/HqwVdU061sRgKtM6IEGopSicjL23gHzhePUBUq8Bo2RUIbJroSIkaZaegaPUvOLcR/tavgCYBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:55:51.366086Z"},"content_sha256":"a7b0a97eb7d09cb73a1bafc21b7bb430ce0424d68587c2c6e0788fd6dddbada9","schema_version":"1.0","event_id":"sha256:a7b0a97eb7d09cb73a1bafc21b7bb430ce0424d68587c2c6e0788fd6dddbada9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:QESDVKYRLBIYJLTFXTCHS76FCM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Proposal to search for a dark photon in $e^+$ on target collisions at DA$\\Phi$NE linac","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"physics.ins-det","authors_text":"Mauro Raggi, Venelin Kozhuharov","submitted_at":"2014-03-12T17:37:39Z","abstract_excerpt":"Photon-like particles are predicted in many extensions of the Standard Model. They have interactions similar to the photon, are vector bosons, and can be produced together with photons. The present paper proposes a search for such particles in the $ e^+e^- \\to U\\gamma$ process in a positron-on-target experiment, exploiting the positron beam of the DA$\\Phi$NE linac at the Laboratori Nazionali di Frascati, INFN. In one year of running a sensitivity in the relative interaction strength down to $\\sim10^{-6}$ is achievable, in the mass region from 2.5 MeV$<M_U<$ 20 MeV. The proposed experimental se"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.3041","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":""},"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":"2026-05-18T02:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u2p/YhZ0UcfTNXSyzaQU142yV25gNQeYpKNry52YR/kQbdg9C1Ku4mzYedfa2yf2uu4pN0iN8JqXFJeaF6FdBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:55:51.366798Z"},"content_sha256":"5b58bf2a9db36b76ca5c08779fcc088b0abac1108a46690fa14bc28036135eae","schema_version":"1.0","event_id":"sha256:5b58bf2a9db36b76ca5c08779fcc088b0abac1108a46690fa14bc28036135eae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QESDVKYRLBIYJLTFXTCHS76FCM/bundle.json","state_url":"https://pith.science/pith/QESDVKYRLBIYJLTFXTCHS76FCM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QESDVKYRLBIYJLTFXTCHS76FCM/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":"2026-05-26T03:55:51Z","links":{"resolver":"https://pith.science/pith/QESDVKYRLBIYJLTFXTCHS76FCM","bundle":"https://pith.science/pith/QESDVKYRLBIYJLTFXTCHS76FCM/bundle.json","state":"https://pith.science/pith/QESDVKYRLBIYJLTFXTCHS76FCM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QESDVKYRLBIYJLTFXTCHS76FCM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QESDVKYRLBIYJLTFXTCHS76FCM","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":"965f8d34b6d56829254679dee2833741252cbc2f13dd177b01299ee6b446282b","cross_cats_sorted":["hep-ex","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-03-12T17:37:39Z","title_canon_sha256":"0c27b72dce49b737e2220dc71f092d705d5cc613c8bb8b4bca22e45adf680087"},"schema_version":"1.0","source":{"id":"1403.3041","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.3041","created_at":"2026-05-18T02:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"1403.3041v2","created_at":"2026-05-18T02:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.3041","created_at":"2026-05-18T02:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"QESDVKYRLBIY","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"QESDVKYRLBIYJLTF","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"QESDVKYR","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:5b58bf2a9db36b76ca5c08779fcc088b0abac1108a46690fa14bc28036135eae","target":"graph","created_at":"2026-05-18T02:47:31Z","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"},"paper":{"abstract_excerpt":"Photon-like particles are predicted in many extensions of the Standard Model. They have interactions similar to the photon, are vector bosons, and can be produced together with photons. The present paper proposes a search for such particles in the $ e^+e^- \\to U\\gamma$ process in a positron-on-target experiment, exploiting the positron beam of the DA$\\Phi$NE linac at the Laboratori Nazionali di Frascati, INFN. In one year of running a sensitivity in the relative interaction strength down to $\\sim10^{-6}$ is achievable, in the mass region from 2.5 MeV$<M_U<$ 20 MeV. The proposed experimental se","authors_text":"Mauro Raggi, Venelin Kozhuharov","cross_cats":["hep-ex","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-03-12T17:37:39Z","title":"Proposal to search for a dark photon in $e^+$ on target collisions at DA$\\Phi$NE linac"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.3041","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:a7b0a97eb7d09cb73a1bafc21b7bb430ce0424d68587c2c6e0788fd6dddbada9","target":"record","created_at":"2026-05-18T02:47:31Z","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":"965f8d34b6d56829254679dee2833741252cbc2f13dd177b01299ee6b446282b","cross_cats_sorted":["hep-ex","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-03-12T17:37:39Z","title_canon_sha256":"0c27b72dce49b737e2220dc71f092d705d5cc613c8bb8b4bca22e45adf680087"},"schema_version":"1.0","source":{"id":"1403.3041","kind":"arxiv","version":2}},"canonical_sha256":"81243aab11585184ae65bcc4797fc5133fcb82c22687391f580d49cab70f35fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81243aab11585184ae65bcc4797fc5133fcb82c22687391f580d49cab70f35fb","first_computed_at":"2026-05-18T02:47:31.269188Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:47:31.269188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N64Np9ZxBZTpeAwQVfpRTDaK1xn8NTOriAv/tjuCZNZFBSgB9uTNT9anODYEMQyf4qvms8SyTbI7Jj2tlIK5BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:47:31.269760Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.3041","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7b0a97eb7d09cb73a1bafc21b7bb430ce0424d68587c2c6e0788fd6dddbada9","sha256:5b58bf2a9db36b76ca5c08779fcc088b0abac1108a46690fa14bc28036135eae"],"state_sha256":"704a422c39b6be65d2bb13ca453b79eda37df6ede4371cc71283f61019d141b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lzWPUzu9D6yJQycvjNL2ZlJSY07HHRslN+oHiH5HNucBscXEtBX24uIiTHXMGJ50rnEpi1R4OS2w8mdr58xQDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:55:51.369915Z","bundle_sha256":"16c4fb2ba2d44561c0cd7a0476d857ee4a31068a227061302744d570471bfe3b"}}