{"paper":{"title":"Evaluating alternative spin scenarios of $P_{c\\bar{c}}(4440)$ and $P_{c\\bar{c}}(4457)$ using heavy quark symmetries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Heavy quark symmetries favor J^P = 1/2 for P_c c-bar(4440) and J^P = 3/2 for P_c c-bar(4457) as D-bar* Sigma_c molecules, allowing estimates of Xi_cc(*) Sigma_c(*) states and elimination of one spin option for P_c c-bar s(4338) and P_c c-bar s(4459).","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Duygu Y{\\i}ld{\\i}r{\\i}m","submitted_at":"2026-05-13T11:04:02Z","abstract_excerpt":"Heavy quark symmetries are useful for predicting the existence of heavy states, their masses, and spin states. Despite numerous studies on the $P_{c\\bar{c}}(4440)$ and $P_{c\\bar{c}}(4457)$ heavy states, their spin states have not been previously determined. In this study, heavy symmetries are applied to predict the spin states. If the $P_{c\\bar{c}}(4440)$ and $P_{c\\bar{c}}(4457)$ states are considered $\\bar{D}^*\\Sigma_c$ molecules, they can be classified as heavy partners. This classification may help clarify their potential connections with heavy antiquark-diquark symmetry partners. By utiliz"},"claims":{"count":3,"items":[{"kind":"strongest_claim","text":"One spin state appears to be favored, suggesting that P_c c-bar(4440) has J^P=1/2 and P_c c-bar(4457) has J^P=3/2.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the P_c c-bar(4440) and P_c c-bar(4457) states are D-bar* Sigma_c molecules to which heavy quark symmetries can be directly applied.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Heavy quark symmetries favor J^P = 1/2 for P_c c-bar(4440) and J^P = 3/2 for P_c c-bar(4457) as D-bar* Sigma_c molecules, allowing estimates of Xi_cc(*) Sigma_c(*) states and elimination of one spin option for P_c c-bar s(4338) and P_c c-bar s(4459).","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"}],"snapshot_sha256":"fd3fb76fd13f09a115656b513d1831f28f1d0fc550d04ebd605940ba16163995"},"source":{"id":"2605.13344","kind":"arxiv","version":1},"verdict":{"id":"410655b2-5ac3-4a9f-88cf-60b93b5a78a9","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T18:21:27.208214Z","strongest_claim":"One spin state appears to be favored, suggesting that P_c c-bar(4440) has J^P=1/2 and P_c c-bar(4457) has J^P=3/2.","one_line_summary":"Heavy quark symmetries favor J^P = 1/2 for P_c c-bar(4440) and J^P = 3/2 for P_c c-bar(4457) as D-bar* Sigma_c molecules, allowing estimates of Xi_cc(*) Sigma_c(*) states and elimination of one spin option for P_c c-bar s(4338) and P_c c-bar s(4459).","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the P_c c-bar(4440) and P_c c-bar(4457) states are D-bar* Sigma_c molecules to which heavy quark symmetries can be directly applied.","pith_extraction_headline":""},"references":{"count":80,"sample":[{"doi":"","year":2003,"title":"S. K. Choi et al. Observation of a narrow charmoniumlike state in exclusive B± →K ±π+π−J/ψdecays.Phys. Rev. Lett., 91:262001, Dec 2003","work_id":"a84585c6-7bd1-4451-8289-2d0fda94c533","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1964,"title":"M. Gell-Mann. A schematic model of baryons and mesons.Phys. Lett., 8(3):214– 215, 1964","work_id":"581a291a-ea36-4693-9134-85095ab29688","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2012,"title":"R. Faccini, A. Pilloni, and A.D. Polosa. Exotic Heavy Quarkonium Spectroscopy: A Mini-review.Mod. Phys. Lett. A, 27:1230025, 2012","work_id":"d4ab4b0a-4433-496e-a0ce-ba0d11b13ceb","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2005,"title":"Suzuki.X(3872) boson: Molecule or charmonium.Phys","work_id":"dc51d7e8-f084-4237-b0c0-d729519f7ed3","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2004,"title":"E.S. Swanson. Diagnostic decays of the X(3872).Phys. Lett. B, 598:197–202, 2004","work_id":"625730e5-e39b-4489-9c75-767da2dd23e7","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":80,"snapshot_sha256":"63a5849ffcb597ce9c5c89b582410554f9a2bdeb00ae0cb2b241226fd163f5f4","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"}