{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:FIDNPCFO6L7YQCYP5PGVNFNSJ7","short_pith_number":"pith:FIDNPCFO","canonical_record":{"source":{"id":"1202.4522","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-02-21T03:58:22Z","cross_cats_sorted":[],"title_canon_sha256":"064ee035f861ae0809ea5aec57b251d55b6ab9c0e2a43ea7e904f54cec13acfc","abstract_canon_sha256":"da54e67605f227a94e81843a035a2f96941fa63c4de609b1109f5e699df19531"},"schema_version":"1.0"},"canonical_sha256":"2a06d788aef2ff880b0febcd5695b24fc726c9e933afec81c5fe1cf2df20edf0","source":{"kind":"arxiv","id":"1202.4522","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4522","created_at":"2026-05-18T03:24:52Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4522v2","created_at":"2026-05-18T03:24:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4522","created_at":"2026-05-18T03:24:52Z"},{"alias_kind":"pith_short_12","alias_value":"FIDNPCFO6L7Y","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"FIDNPCFO6L7YQCYP","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"FIDNPCFO","created_at":"2026-05-18T12:27:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:FIDNPCFO6L7YQCYP5PGVNFNSJ7","target":"record","payload":{"canonical_record":{"source":{"id":"1202.4522","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-02-21T03:58:22Z","cross_cats_sorted":[],"title_canon_sha256":"064ee035f861ae0809ea5aec57b251d55b6ab9c0e2a43ea7e904f54cec13acfc","abstract_canon_sha256":"da54e67605f227a94e81843a035a2f96941fa63c4de609b1109f5e699df19531"},"schema_version":"1.0"},"canonical_sha256":"2a06d788aef2ff880b0febcd5695b24fc726c9e933afec81c5fe1cf2df20edf0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:24:52.721805Z","signature_b64":"r1YDcdQ1ovRAg1+4SYfm6WFo0aLiTjyMJEPbpiWJoo3kOAsHOtI4j6crgzbivEw/hd/tznsk69lzlRcnaaAkCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a06d788aef2ff880b0febcd5695b24fc726c9e933afec81c5fe1cf2df20edf0","last_reissued_at":"2026-05-18T03:24:52.721153Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:24:52.721153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.4522","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":"2026-05-18T03:24:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"guTOTOuv1e+QdcM8WmrWMTMbvPhTTVl08xAssG8WSD5dGzkwZ5s6RYkXJgQOzK/1wDDfYCUAS0B0der+U05GBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:31:33.536259Z"},"content_sha256":"bc9109583e5a8ab86f83ec5bdd1b987f1057902f2f95ecabbf755a1f2027db51","schema_version":"1.0","event_id":"sha256:bc9109583e5a8ab86f83ec5bdd1b987f1057902f2f95ecabbf755a1f2027db51"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:FIDNPCFO6L7YQCYP5PGVNFNSJ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Positron attachment to the He doubly excited states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"J. Mitroy, K. Varga, M. W. J. Bromley","submitted_at":"2012-02-21T03:58:22Z","abstract_excerpt":"The projection method is used to demonstrate the existence of positron attachment to three doubly excited states of helium. The e^+He(2s^2 1Se), e^+He(3s^2 1Se), and the e^+He(2s2p 3Po) states have binding energies of 0.447eV, 0.256eV and 0.486eV respectively. These energies were computed with the stochastic variational method and the configuration interaction method. These states will exist as resonances in the e^+ + He continuum and the e^+He(2s^2 1Se) state could be detectable in the e^+ + He collision spectrum. A resonance width of 0.068eV was computed for the e^+He(2s^2 1Se), state by usi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4522","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":"2026-05-18T03:24:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8DRZHBTRhji8z9CXI8S+HZzfsqaEJ6Q3Ix5BsqgBLx0AIZWrZM3k1pEoIHoUltAn0wQ/S8kDmPM4pDf+adQpCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:31:33.536939Z"},"content_sha256":"93f45977f3c4c6005443689572305a61a3d4ce32193738a1187980d935e55650","schema_version":"1.0","event_id":"sha256:93f45977f3c4c6005443689572305a61a3d4ce32193738a1187980d935e55650"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FIDNPCFO6L7YQCYP5PGVNFNSJ7/bundle.json","state_url":"https://pith.science/pith/FIDNPCFO6L7YQCYP5PGVNFNSJ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FIDNPCFO6L7YQCYP5PGVNFNSJ7/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":"2026-05-28T16:31:33Z","links":{"resolver":"https://pith.science/pith/FIDNPCFO6L7YQCYP5PGVNFNSJ7","bundle":"https://pith.science/pith/FIDNPCFO6L7YQCYP5PGVNFNSJ7/bundle.json","state":"https://pith.science/pith/FIDNPCFO6L7YQCYP5PGVNFNSJ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FIDNPCFO6L7YQCYP5PGVNFNSJ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:FIDNPCFO6L7YQCYP5PGVNFNSJ7","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":"da54e67605f227a94e81843a035a2f96941fa63c4de609b1109f5e699df19531","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-02-21T03:58:22Z","title_canon_sha256":"064ee035f861ae0809ea5aec57b251d55b6ab9c0e2a43ea7e904f54cec13acfc"},"schema_version":"1.0","source":{"id":"1202.4522","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4522","created_at":"2026-05-18T03:24:52Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4522v2","created_at":"2026-05-18T03:24:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4522","created_at":"2026-05-18T03:24:52Z"},{"alias_kind":"pith_short_12","alias_value":"FIDNPCFO6L7Y","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"FIDNPCFO6L7YQCYP","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"FIDNPCFO","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:93f45977f3c4c6005443689572305a61a3d4ce32193738a1187980d935e55650","target":"graph","created_at":"2026-05-18T03:24:52Z","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":"The projection method is used to demonstrate the existence of positron attachment to three doubly excited states of helium. The e^+He(2s^2 1Se), e^+He(3s^2 1Se), and the e^+He(2s2p 3Po) states have binding energies of 0.447eV, 0.256eV and 0.486eV respectively. These energies were computed with the stochastic variational method and the configuration interaction method. These states will exist as resonances in the e^+ + He continuum and the e^+He(2s^2 1Se) state could be detectable in the e^+ + He collision spectrum. A resonance width of 0.068eV was computed for the e^+He(2s^2 1Se), state by usi","authors_text":"J. Mitroy, K. Varga, M. W. J. Bromley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-02-21T03:58:22Z","title":"Positron attachment to the He doubly excited states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4522","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:bc9109583e5a8ab86f83ec5bdd1b987f1057902f2f95ecabbf755a1f2027db51","target":"record","created_at":"2026-05-18T03:24:52Z","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":"da54e67605f227a94e81843a035a2f96941fa63c4de609b1109f5e699df19531","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-02-21T03:58:22Z","title_canon_sha256":"064ee035f861ae0809ea5aec57b251d55b6ab9c0e2a43ea7e904f54cec13acfc"},"schema_version":"1.0","source":{"id":"1202.4522","kind":"arxiv","version":2}},"canonical_sha256":"2a06d788aef2ff880b0febcd5695b24fc726c9e933afec81c5fe1cf2df20edf0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a06d788aef2ff880b0febcd5695b24fc726c9e933afec81c5fe1cf2df20edf0","first_computed_at":"2026-05-18T03:24:52.721153Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:24:52.721153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r1YDcdQ1ovRAg1+4SYfm6WFo0aLiTjyMJEPbpiWJoo3kOAsHOtI4j6crgzbivEw/hd/tznsk69lzlRcnaaAkCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:24:52.721805Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.4522","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc9109583e5a8ab86f83ec5bdd1b987f1057902f2f95ecabbf755a1f2027db51","sha256:93f45977f3c4c6005443689572305a61a3d4ce32193738a1187980d935e55650"],"state_sha256":"c822fc2cbb33a0b60731cb6946ac8e9c07f9bc8959cbf63eff286cda701bd56e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kETsEihjmsBXad4BUnJoCrc6KaLdT6PvW/FMVl1cq1UdZFNeAWdpooQZCmocOWzWjcdlA3hyFRU8X5mSPgOJCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T16:31:33.540307Z","bundle_sha256":"73564db3da374ec8abfe783ee795fd44c38286ca91de6bec3606e25b627a7f40"}}