{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:XMEJGKNRV2XYSJRMXKHWX2MBCI","short_pith_number":"pith:XMEJGKNR","schema_version":"1.0","canonical_sha256":"bb089329b1aeaf89262cba8f6be981120f6bc3fb668a5b47faa712641a38ac89","source":{"kind":"arxiv","id":"0905.0945","version":2},"attestation_state":"computed","paper":{"title":"Branching ratio and CP violation of $B_c \\to D K$ decays in the perturbative QCD approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Jun Zhang, Xian-Qiao Yu","submitted_at":"2009-05-07T03:18:42Z","abstract_excerpt":"In this paper, we calculate the branching ratio and direct CP asymmetry parameter of $B_c^{\\pm}\\to D^{0}K^{\\pm}$ in the framework of perturbative QCD approach based on $k_T$ factorization. Besides the usual factorizable diagrams, both non-factorizable and annihilation type contributions are taken into account. We find that (a) the branching ratio is at the order of $10^{-5}$; (b) the tree annihilation diagrams and the penguin diagrams dominate the total contribution; and (c) the direct CP asymmetry is about 7%, which can be tested in the Large Hadron Collider beauty experiments (LHC-b) at CERN"},"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":"0905.0945","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-05-07T03:18:42Z","cross_cats_sorted":[],"title_canon_sha256":"0fc01cf54179cf213bbf976a159c39a95e19f757952c7c9196b85daea191a07d","abstract_canon_sha256":"ac894ad118a525485b16d8c84da2130fe553fe74980337e316e39d639fb52ba8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:59.333679Z","signature_b64":"ZgwPHKsygcH/fGmU30ySv8F4Xmrm85+6ixS9RHdk0tF6yYn5WBAlsHIoftX9F2NvQqEw2/k7JNUP9YyIUcH1CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bb089329b1aeaf89262cba8f6be981120f6bc3fb668a5b47faa712641a38ac89","last_reissued_at":"2026-05-18T02:34:59.333294Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:59.333294Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Branching ratio and CP violation of $B_c \\to D K$ decays in the perturbative QCD approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Jun Zhang, Xian-Qiao Yu","submitted_at":"2009-05-07T03:18:42Z","abstract_excerpt":"In this paper, we calculate the branching ratio and direct CP asymmetry parameter of $B_c^{\\pm}\\to D^{0}K^{\\pm}$ in the framework of perturbative QCD approach based on $k_T$ factorization. Besides the usual factorizable diagrams, both non-factorizable and annihilation type contributions are taken into account. We find that (a) the branching ratio is at the order of $10^{-5}$; (b) the tree annihilation diagrams and the penguin diagrams dominate the total contribution; and (c) the direct CP asymmetry is about 7%, which can be tested in the Large Hadron Collider beauty experiments (LHC-b) at CERN"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0945","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":"0905.0945","created_at":"2026-05-18T02:34:59.333357+00:00"},{"alias_kind":"arxiv_version","alias_value":"0905.0945v2","created_at":"2026-05-18T02:34:59.333357+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0945","created_at":"2026-05-18T02:34:59.333357+00:00"},{"alias_kind":"pith_short_12","alias_value":"XMEJGKNRV2XY","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_16","alias_value":"XMEJGKNRV2XYSJRM","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_8","alias_value":"XMEJGKNR","created_at":"2026-05-18T12:26:02.257875+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI","json":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI.json","graph_json":"https://pith.science/api/pith-number/XMEJGKNRV2XYSJRMXKHWX2MBCI/graph.json","events_json":"https://pith.science/api/pith-number/XMEJGKNRV2XYSJRMXKHWX2MBCI/events.json","paper":"https://pith.science/paper/XMEJGKNR"},"agent_actions":{"view_html":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI","download_json":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI.json","view_paper":"https://pith.science/paper/XMEJGKNR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0905.0945&json=true","fetch_graph":"https://pith.science/api/pith-number/XMEJGKNRV2XYSJRMXKHWX2MBCI/graph.json","fetch_events":"https://pith.science/api/pith-number/XMEJGKNRV2XYSJRMXKHWX2MBCI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI/action/storage_attestation","attest_author":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI/action/author_attestation","sign_citation":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI/action/citation_signature","submit_replication":"https://pith.science/pith/XMEJGKNRV2XYSJRMXKHWX2MBCI/action/replication_record"}},"created_at":"2026-05-18T02:34:59.333357+00:00","updated_at":"2026-05-18T02:34:59.333357+00:00"}