{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:ICW5PPI2RH74TAGDEVPVZCRBJX","short_pith_number":"pith:ICW5PPI2","schema_version":"1.0","canonical_sha256":"40add7bd1a89ffc980c3255f5c8a214dd59bdd695c2d49da94ade13f0fcd946b","source":{"kind":"arxiv","id":"1103.3419","version":2},"attestation_state":"computed","paper":{"title":"First observation of the P-wave spin-singlet bottomonium states h_b(1P) and h_b(2P)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Belle Collaboration","submitted_at":"2011-03-17T14:10:24Z","abstract_excerpt":"We report the first observation of the spin-singlet bottomonium states h_b(1P) and h_b(2P) produced in the reaction e+e- --> hb(nP)pi+pi- using a 121.4fb-1 data sample collected at energies near the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We determine M[h_b(1P)]=(9898.3+/-1.1+1.0-1.1) MeV/c^2 and M[h_b(2P)]=(10259.8+/-0.6+1.4-1.0) MeV/c^2,which correspond to P-wave hyperfine splittings Delta(M_HF) = (+1.6+/-1.5) MeV/c^2 and (+0.5+1.6-1.2) MeV/c^2, respectively. The h_b(1P) and h_b(2P) are observed with significances of 5.5sigma and 11.2sigma, "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1103.3419","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2011-03-17T14:10:24Z","cross_cats_sorted":[],"title_canon_sha256":"efddb832dcd1b96a993d6d6f2ead79e1f13d347cb25e8f46638ad2dbdb6e4216","abstract_canon_sha256":"47489c13354363eea39806d926a929c10e4032d49e0f27133cfe647774b692ce"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:50.320805Z","signature_b64":"ZlbqJ7/LJKWRfd93BKiYBUBPxPO4AYYEfNvvP5PzbcVnuUFSfm+8cCscRUnmzMq4yGhlauy6B8u5K9rp3Wk5DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40add7bd1a89ffc980c3255f5c8a214dd59bdd695c2d49da94ade13f0fcd946b","last_reissued_at":"2026-05-18T02:02:50.320100Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:50.320100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"First observation of the P-wave spin-singlet bottomonium states h_b(1P) and h_b(2P)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Belle Collaboration","submitted_at":"2011-03-17T14:10:24Z","abstract_excerpt":"We report the first observation of the spin-singlet bottomonium states h_b(1P) and h_b(2P) produced in the reaction e+e- --> hb(nP)pi+pi- using a 121.4fb-1 data sample collected at energies near the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We determine M[h_b(1P)]=(9898.3+/-1.1+1.0-1.1) MeV/c^2 and M[h_b(2P)]=(10259.8+/-0.6+1.4-1.0) MeV/c^2,which correspond to P-wave hyperfine splittings Delta(M_HF) = (+1.6+/-1.5) MeV/c^2 and (+0.5+1.6-1.2) MeV/c^2, respectively. The h_b(1P) and h_b(2P) are observed with significances of 5.5sigma and 11.2sigma, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.3419","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1103.3419","created_at":"2026-05-18T02:02:50.320199+00:00"},{"alias_kind":"arxiv_version","alias_value":"1103.3419v2","created_at":"2026-05-18T02:02:50.320199+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.3419","created_at":"2026-05-18T02:02:50.320199+00:00"},{"alias_kind":"pith_short_12","alias_value":"ICW5PPI2RH74","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_16","alias_value":"ICW5PPI2RH74TAGD","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_8","alias_value":"ICW5PPI2","created_at":"2026-05-18T12:26:30.835961+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2411.18639","citing_title":"Averages of $b$-hadron, $c$-hadron, and $\\tau$-lepton properties as of 2023","ref_index":40,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX","json":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX.json","graph_json":"https://pith.science/api/pith-number/ICW5PPI2RH74TAGDEVPVZCRBJX/graph.json","events_json":"https://pith.science/api/pith-number/ICW5PPI2RH74TAGDEVPVZCRBJX/events.json","paper":"https://pith.science/paper/ICW5PPI2"},"agent_actions":{"view_html":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX","download_json":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX.json","view_paper":"https://pith.science/paper/ICW5PPI2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1103.3419&json=true","fetch_graph":"https://pith.science/api/pith-number/ICW5PPI2RH74TAGDEVPVZCRBJX/graph.json","fetch_events":"https://pith.science/api/pith-number/ICW5PPI2RH74TAGDEVPVZCRBJX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX/action/storage_attestation","attest_author":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX/action/author_attestation","sign_citation":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX/action/citation_signature","submit_replication":"https://pith.science/pith/ICW5PPI2RH74TAGDEVPVZCRBJX/action/replication_record"}},"created_at":"2026-05-18T02:02:50.320199+00:00","updated_at":"2026-05-18T02:02:50.320199+00:00"}