{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EDGLRYJJBF6SPCQLGXHPITPSUG","short_pith_number":"pith:EDGLRYJJ","canonical_record":{"source":{"id":"1712.05706","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-12-15T15:18:54Z","cross_cats_sorted":[],"title_canon_sha256":"f31a535952b060ac1246a782b3682ad8ebf2aa0ba3d375e913cd3561ca25866b","abstract_canon_sha256":"b020fa9ede8688d341cdeb748f3ef2ba2b2ba5c3a943efdb4dc9118f5a1508d3"},"schema_version":"1.0"},"canonical_sha256":"20ccb8e129097d278a0b35cef44df2a1a469433d7ab637f12442a419e38bd56b","source":{"kind":"arxiv","id":"1712.05706","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.05706","created_at":"2026-05-18T00:14:46Z"},{"alias_kind":"arxiv_version","alias_value":"1712.05706v4","created_at":"2026-05-18T00:14:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.05706","created_at":"2026-05-18T00:14:46Z"},{"alias_kind":"pith_short_12","alias_value":"EDGLRYJJBF6S","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EDGLRYJJBF6SPCQL","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EDGLRYJJ","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EDGLRYJJBF6SPCQLGXHPITPSUG","target":"record","payload":{"canonical_record":{"source":{"id":"1712.05706","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-12-15T15:18:54Z","cross_cats_sorted":[],"title_canon_sha256":"f31a535952b060ac1246a782b3682ad8ebf2aa0ba3d375e913cd3561ca25866b","abstract_canon_sha256":"b020fa9ede8688d341cdeb748f3ef2ba2b2ba5c3a943efdb4dc9118f5a1508d3"},"schema_version":"1.0"},"canonical_sha256":"20ccb8e129097d278a0b35cef44df2a1a469433d7ab637f12442a419e38bd56b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:46.747091Z","signature_b64":"VMv/N2HtWFcmGnYI4ze2Pv5MK61pBzwYPkpu1cuSM+9yU2cJexeqmyhLtdu4O5/xDpBp+XGzl84O5vc97G5SBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20ccb8e129097d278a0b35cef44df2a1a469433d7ab637f12442a419e38bd56b","last_reissued_at":"2026-05-18T00:14:46.746720Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:46.746720Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.05706","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:14:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JKuiwvM4IB+S90wh33nc2hDjmY8vJOyjOidxnN1I+9iRxC4XBagqgWTKbfR1rohTtPD9J4Bbcgb1pAF6jSz7Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T01:08:23.279458Z"},"content_sha256":"2910aa34321c42b68f3a8eebed79da599b007548cb4366dc5994d4feaf2425cb","schema_version":"1.0","event_id":"sha256:2910aa34321c42b68f3a8eebed79da599b007548cb4366dc5994d4feaf2425cb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EDGLRYJJBF6SPCQLGXHPITPSUG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The exact tree-level calculation of the dark photon production in high-energy electron scattering at the CERN SPS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"D. V. Kirpichnikov, M. M. Kirsanov, N. V. Krasnikov, S. N. Gninenko","submitted_at":"2017-12-15T15:18:54Z","abstract_excerpt":"Dark photon ($A'$) that couples to the standard model fermions via the kinetic mixing with photons and serves as a mediator of dark matter production could be observed in the high-energy electron scattering $e^- + Z ~\\rightarrow e^- + Z + A'$ off nuclei followed by the $A' \\to invisible $ decay. We have performed the exact, tree-level calculations of the $A'$ production cross sections and implemented them in the program for the full simulation of such events in the experiment NA64 at the CERN SPS. Using simulations results, we study the missing energy signature for the bremsstrahlung $A' \\righ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.05706","kind":"arxiv","version":4},"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":"2026-05-18T00:14:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g+Bfli3RPXkMMrS2C9eduekQ18UhAPrk9sMY9obn3yfl9ke77iZtrPbIAjlSwtkxqSXF+h4JPx4YQHk17eaICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T01:08:23.280047Z"},"content_sha256":"075304d7d94cab87910a308b59c8ce7f6197970055961778a3c91a1e8974f17e","schema_version":"1.0","event_id":"sha256:075304d7d94cab87910a308b59c8ce7f6197970055961778a3c91a1e8974f17e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EDGLRYJJBF6SPCQLGXHPITPSUG/bundle.json","state_url":"https://pith.science/pith/EDGLRYJJBF6SPCQLGXHPITPSUG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EDGLRYJJBF6SPCQLGXHPITPSUG/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":"2026-05-19T01:08:23Z","links":{"resolver":"https://pith.science/pith/EDGLRYJJBF6SPCQLGXHPITPSUG","bundle":"https://pith.science/pith/EDGLRYJJBF6SPCQLGXHPITPSUG/bundle.json","state":"https://pith.science/pith/EDGLRYJJBF6SPCQLGXHPITPSUG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EDGLRYJJBF6SPCQLGXHPITPSUG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EDGLRYJJBF6SPCQLGXHPITPSUG","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":"b020fa9ede8688d341cdeb748f3ef2ba2b2ba5c3a943efdb4dc9118f5a1508d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-12-15T15:18:54Z","title_canon_sha256":"f31a535952b060ac1246a782b3682ad8ebf2aa0ba3d375e913cd3561ca25866b"},"schema_version":"1.0","source":{"id":"1712.05706","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.05706","created_at":"2026-05-18T00:14:46Z"},{"alias_kind":"arxiv_version","alias_value":"1712.05706v4","created_at":"2026-05-18T00:14:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.05706","created_at":"2026-05-18T00:14:46Z"},{"alias_kind":"pith_short_12","alias_value":"EDGLRYJJBF6S","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EDGLRYJJBF6SPCQL","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EDGLRYJJ","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:075304d7d94cab87910a308b59c8ce7f6197970055961778a3c91a1e8974f17e","target":"graph","created_at":"2026-05-18T00:14:46Z","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":"Dark photon ($A'$) that couples to the standard model fermions via the kinetic mixing with photons and serves as a mediator of dark matter production could be observed in the high-energy electron scattering $e^- + Z ~\\rightarrow e^- + Z + A'$ off nuclei followed by the $A' \\to invisible $ decay. We have performed the exact, tree-level calculations of the $A'$ production cross sections and implemented them in the program for the full simulation of such events in the experiment NA64 at the CERN SPS. Using simulations results, we study the missing energy signature for the bremsstrahlung $A' \\righ","authors_text":"D. V. Kirpichnikov, M. M. Kirsanov, N. V. Krasnikov, S. N. Gninenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-12-15T15:18:54Z","title":"The exact tree-level calculation of the dark photon production in high-energy electron scattering at the CERN SPS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.05706","kind":"arxiv","version":4},"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":"sha256:2910aa34321c42b68f3a8eebed79da599b007548cb4366dc5994d4feaf2425cb","target":"record","created_at":"2026-05-18T00:14:46Z","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":"b020fa9ede8688d341cdeb748f3ef2ba2b2ba5c3a943efdb4dc9118f5a1508d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-12-15T15:18:54Z","title_canon_sha256":"f31a535952b060ac1246a782b3682ad8ebf2aa0ba3d375e913cd3561ca25866b"},"schema_version":"1.0","source":{"id":"1712.05706","kind":"arxiv","version":4}},"canonical_sha256":"20ccb8e129097d278a0b35cef44df2a1a469433d7ab637f12442a419e38bd56b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20ccb8e129097d278a0b35cef44df2a1a469433d7ab637f12442a419e38bd56b","first_computed_at":"2026-05-18T00:14:46.746720Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:46.746720Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VMv/N2HtWFcmGnYI4ze2Pv5MK61pBzwYPkpu1cuSM+9yU2cJexeqmyhLtdu4O5/xDpBp+XGzl84O5vc97G5SBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:46.747091Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.05706","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2910aa34321c42b68f3a8eebed79da599b007548cb4366dc5994d4feaf2425cb","sha256:075304d7d94cab87910a308b59c8ce7f6197970055961778a3c91a1e8974f17e"],"state_sha256":"0293c1b7291157ff1d3d1e80ec9b8035fa76e5246fc9a253bbe18f873f4a7d05"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ziUF8NFt6PkBNqBeHbemQBB+wqEipI3WU7b/w0tfjbAro5ojpXD19M4bzxRwHWOnNvzypkQQTeT9J4JuNWmsAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T01:08:23.281898Z","bundle_sha256":"83df685bee28ba7f793e567dd156a1b745d4debc7934035c35b34ab518c4ccb7"}}