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Furthermore, we calculate the hadronic coupling constants $G_{Z_c\\eta_c\\pi}$ and $G_{Z_cDD}$ with the three-point QCD sum rules, then study the strong decays $ Z_c\\to \\eta_c\\pi\\, ,\\, DD$, and observ"},"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":"1502.00279","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-01-16T00:33:53Z","cross_cats_sorted":[],"title_canon_sha256":"97b279958f9b83be05cb816cb9604dd149e6def024a4c7787f2c626a3bf89a7c","abstract_canon_sha256":"6c4a42f344a0bddaff064e19bacbf8cdc3cfe70ec6e65981621e03137d40a86c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:28:06.302644Z","signature_b64":"qNsFpKar+glyq7pBLkVRvvwU4CD1AFaQcT7U+VzhfG9SuHTDvFWWQNHp1VVs6l57NKMUz7yMkb+aVi5NeyzsDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"149764800867ef54aaf07295e11b5079e0348aaadfaad565ce7941f9af4c6f75","last_reissued_at":"2026-05-18T02:28:06.302213Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:28:06.302213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The lowest hidden charmed tetraquark state from QCD sum rules","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Zhi-Gang Wang","submitted_at":"2015-01-16T00:33:53Z","abstract_excerpt":"In this article, we study the $S\\bar{S}$ type scalar tetraquark state $cq\\bar{c}\\bar{q}$ in details with the QCD sum rules by calculating the contributions of the vacuum condensates up to dimension-10 in the operator product expansion, and obtain the value $M_{Z_c}=\\left(3.82^{+0.08}_{-0.08}\\right)\\,\\rm{GeV}$, which is the lowest mass for the hidden charmed tetraquark states from the QCD sum rules. 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