{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:LLCXH6CPEUILQQOTELZPMP5CFT","short_pith_number":"pith:LLCXH6CP","canonical_record":{"source":{"id":"1507.02073","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-07-08T09:12:13Z","cross_cats_sorted":[],"title_canon_sha256":"5984bf40d125a2face27d00927237838b01e375058266e160e8cf61633dfa262","abstract_canon_sha256":"2593877097eaab77e08f37c07473976f872499a655d48bdd39640482a1369b99"},"schema_version":"1.0"},"canonical_sha256":"5ac573f84f2510b841d322f2f63fa22cf297296bc3d19a66a2a391a011803360","source":{"kind":"arxiv","id":"1507.02073","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.02073","created_at":"2026-05-18T01:22:39Z"},{"alias_kind":"arxiv_version","alias_value":"1507.02073v2","created_at":"2026-05-18T01:22:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.02073","created_at":"2026-05-18T01:22:39Z"},{"alias_kind":"pith_short_12","alias_value":"LLCXH6CPEUIL","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LLCXH6CPEUILQQOT","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LLCXH6CP","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:LLCXH6CPEUILQQOTELZPMP5CFT","target":"record","payload":{"canonical_record":{"source":{"id":"1507.02073","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-07-08T09:12:13Z","cross_cats_sorted":[],"title_canon_sha256":"5984bf40d125a2face27d00927237838b01e375058266e160e8cf61633dfa262","abstract_canon_sha256":"2593877097eaab77e08f37c07473976f872499a655d48bdd39640482a1369b99"},"schema_version":"1.0"},"canonical_sha256":"5ac573f84f2510b841d322f2f63fa22cf297296bc3d19a66a2a391a011803360","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:39.310858Z","signature_b64":"qeVz9YCbtfq1VHNf4hBf0dUy40fKpt7Ap2GBzyAEJDlsTfHlzsfi2i/obV5sVWMrJLE37Jw4fo5sirO/zLisDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ac573f84f2510b841d322f2f63fa22cf297296bc3d19a66a2a391a011803360","last_reissued_at":"2026-05-18T01:22:39.310402Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:39.310402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.02073","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":"2026-05-18T01:22:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uc94fdW/wYX3NfkN0DENOSYysCHRqgJzjj8s7ljB8w5yaZTlUai0EkqZlnkVTAb59f7dsconN4br1c8GynEBBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:21:28.343955Z"},"content_sha256":"38ef2e3d6c2b8f60a42d98d015ae910c5fd999d8803455a29fee4ddaacbe7a0c","schema_version":"1.0","event_id":"sha256:38ef2e3d6c2b8f60a42d98d015ae910c5fd999d8803455a29fee4ddaacbe7a0c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:LLCXH6CPEUILQQOTELZPMP5CFT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On a search for the $\\eta \\rightarrow e^+ e^-$ decay at the VEPP-2000 $e^+e^-$ collider","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. A. Botov, A. A. Korol, A. E. Obrazovsky, A. G. Bogdanchikov, A. G. Kharlamov, A. I. Senchenko, A. N. Skrinsky, A. P. Lysenko, A. S. Kupich, A. V. Vasiljev, A. Yu. Barnyakov, D. A. Shtol, D. B. Shwartz, D. P. Kovrizhin, E. A. Perevedentsev, E. V. Pakhtusova, I. A. Koop, I. K. Surin, I. M. Zemlyansky, K. A. Martin, K. I. Beloborodov A. V. Berdyugin, L. A. Korneev, L. V. Kardapoltsev, M. N. Achasov, N. Yu. Muchnoi, S. I. Serednyakov, T. V. Dimova, V. B. Golubev, V. P. Druzhinin, Yu. A. Rogovsky, Yu. A. Tikhonov, Yu. M. Shatunov, Yu. V. Usov, Z. K. Silagadze","submitted_at":"2015-07-08T09:12:13Z","abstract_excerpt":"A sensitivity of the VEPP-2000 $e^+e^-$ collider in a search for the rare decay $\\eta \\rightarrow e^+ e^-$ has been studied. The inverse reaction $e^+ e^- \\rightarrow \\eta$ is proposed for this search. We have analyzed a data sample with an integrated luminosity of 108 nb$^{-1}$ collected with the SND detector in the center-of-mass energy range 520-580 MeV and found no background events for the reaction $e^+ e^- \\rightarrow \\eta$ in the decay mode $\\eta\\to\\pi^0\\pi^0\\pi^0$. In the absence of background, a sensitivity to ${\\cal B}(\\eta \\rightarrow e^+ e^-)$ of $10^{-6}$ can be reached during two"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.02073","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":"2026-05-18T01:22:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+/P8CFsDD8ljCPeQHDiBUsug+7jseaCFHX1ctgprJ8gx2145J0zT8bAf+Mo6Dx+MKTKjTRjnpVwj6+GOnu3eAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:21:28.344586Z"},"content_sha256":"99ab32b31473f3ad8570eb0151cf9b5d15be84b479e36a355a28ed91068c92b2","schema_version":"1.0","event_id":"sha256:99ab32b31473f3ad8570eb0151cf9b5d15be84b479e36a355a28ed91068c92b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LLCXH6CPEUILQQOTELZPMP5CFT/bundle.json","state_url":"https://pith.science/pith/LLCXH6CPEUILQQOTELZPMP5CFT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LLCXH6CPEUILQQOTELZPMP5CFT/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":"2026-05-26T08:21:28Z","links":{"resolver":"https://pith.science/pith/LLCXH6CPEUILQQOTELZPMP5CFT","bundle":"https://pith.science/pith/LLCXH6CPEUILQQOTELZPMP5CFT/bundle.json","state":"https://pith.science/pith/LLCXH6CPEUILQQOTELZPMP5CFT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LLCXH6CPEUILQQOTELZPMP5CFT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LLCXH6CPEUILQQOTELZPMP5CFT","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":"2593877097eaab77e08f37c07473976f872499a655d48bdd39640482a1369b99","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-07-08T09:12:13Z","title_canon_sha256":"5984bf40d125a2face27d00927237838b01e375058266e160e8cf61633dfa262"},"schema_version":"1.0","source":{"id":"1507.02073","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.02073","created_at":"2026-05-18T01:22:39Z"},{"alias_kind":"arxiv_version","alias_value":"1507.02073v2","created_at":"2026-05-18T01:22:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.02073","created_at":"2026-05-18T01:22:39Z"},{"alias_kind":"pith_short_12","alias_value":"LLCXH6CPEUIL","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LLCXH6CPEUILQQOT","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LLCXH6CP","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:99ab32b31473f3ad8570eb0151cf9b5d15be84b479e36a355a28ed91068c92b2","target":"graph","created_at":"2026-05-18T01:22:39Z","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":"A sensitivity of the VEPP-2000 $e^+e^-$ collider in a search for the rare decay $\\eta \\rightarrow e^+ e^-$ has been studied. The inverse reaction $e^+ e^- \\rightarrow \\eta$ is proposed for this search. We have analyzed a data sample with an integrated luminosity of 108 nb$^{-1}$ collected with the SND detector in the center-of-mass energy range 520-580 MeV and found no background events for the reaction $e^+ e^- \\rightarrow \\eta$ in the decay mode $\\eta\\to\\pi^0\\pi^0\\pi^0$. In the absence of background, a sensitivity to ${\\cal B}(\\eta \\rightarrow e^+ e^-)$ of $10^{-6}$ can be reached during two","authors_text":"A. A. Botov, A. A. Korol, A. E. Obrazovsky, A. G. Bogdanchikov, A. G. Kharlamov, A. I. Senchenko, A. N. Skrinsky, A. P. Lysenko, A. S. Kupich, A. V. Vasiljev, A. Yu. Barnyakov, D. A. Shtol, D. B. Shwartz, D. P. Kovrizhin, E. A. Perevedentsev, E. V. Pakhtusova, I. A. Koop, I. K. Surin, I. M. Zemlyansky, K. A. Martin, K. I. Beloborodov A. V. Berdyugin, L. A. Korneev, L. V. Kardapoltsev, M. N. Achasov, N. Yu. Muchnoi, S. I. Serednyakov, T. V. Dimova, V. B. Golubev, V. P. Druzhinin, Yu. A. Rogovsky, Yu. A. Tikhonov, Yu. M. Shatunov, Yu. V. Usov, Z. K. Silagadze","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-07-08T09:12:13Z","title":"On a search for the $\\eta \\rightarrow e^+ e^-$ decay at the VEPP-2000 $e^+e^-$ collider"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.02073","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":"sha256:38ef2e3d6c2b8f60a42d98d015ae910c5fd999d8803455a29fee4ddaacbe7a0c","target":"record","created_at":"2026-05-18T01:22:39Z","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":"2593877097eaab77e08f37c07473976f872499a655d48bdd39640482a1369b99","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2015-07-08T09:12:13Z","title_canon_sha256":"5984bf40d125a2face27d00927237838b01e375058266e160e8cf61633dfa262"},"schema_version":"1.0","source":{"id":"1507.02073","kind":"arxiv","version":2}},"canonical_sha256":"5ac573f84f2510b841d322f2f63fa22cf297296bc3d19a66a2a391a011803360","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ac573f84f2510b841d322f2f63fa22cf297296bc3d19a66a2a391a011803360","first_computed_at":"2026-05-18T01:22:39.310402Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:39.310402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qeVz9YCbtfq1VHNf4hBf0dUy40fKpt7Ap2GBzyAEJDlsTfHlzsfi2i/obV5sVWMrJLE37Jw4fo5sirO/zLisDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:39.310858Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.02073","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38ef2e3d6c2b8f60a42d98d015ae910c5fd999d8803455a29fee4ddaacbe7a0c","sha256:99ab32b31473f3ad8570eb0151cf9b5d15be84b479e36a355a28ed91068c92b2"],"state_sha256":"2df4c934557cfab4bed36fff13c3654e1ae512101b89d74a3515f6ca0c22ef4d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"djw/l6OucdXjE0ZRG47/2eU3ZPEi+1xf0MPswdykLk08oz11WNBSQKCRj6U7SiKG7yFKPLMhIC0xFqP2qA5mDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T08:21:28.347742Z","bundle_sha256":"684a907192b1a137cb7136578e5b87fa107f5255ce29ed1a0d3aabfc1ba69c92"}}