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This doubly-charged bound state can be detected by its decay into $B_c^\\pm \\pi^\\pm$. Similarly, we can also replace both charm quark and antiquark of the $Z^+ (4433)$ by bottom quark and antiquark, respectively, thus forming $Z"},"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":"0709.1312","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2007-09-10T06:09:38Z","cross_cats_sorted":[],"title_canon_sha256":"cf0181004e16064eae45d844faf929767cdaa4a29c9d0203eb62594dd71ee280","abstract_canon_sha256":"2db85451083d350c5ded1bdff2aa312730635f463134db4f1cb77c01a6649f66"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:27:44.197720Z","signature_b64":"Hwoz0czpDXF9+wS0bHyWKyZ2gvDTQp+AT5N1CGcHHP6VRzfVJtsvAcY1sSFn7oheYVL0+y393/XpLNvpFi10AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1fd358c8e8fd87c58c0ee10d043c158697dac2b229d22af7d34efc8bd91326a3","last_reissued_at":"2026-07-04T15:27:44.197304Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:27:44.197304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Bottomed Analog of Z+(4433)","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"kingman Cheung, Tzu-Chiang Yuan, Wai-Yee Keung","submitted_at":"2007-09-10T06:09:38Z","abstract_excerpt":"The newly observed $Z^+ (4433)$ resonance by BELLE is believed to be a tetraquark bound state made up of $(cu)(\\bar c \\bar d)$. 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