{"paper":{"title":"On the near-threshold $\\bar pp$ invariant mass spectrum measured in $J/\\psi$ and $\\psi'$ decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"nucl-th","authors_text":"J. Haidenbauer, Ulf-G. Mei{\\ss}ner, Xian-Wei Kang","submitted_at":"2015-02-03T15:00:22Z","abstract_excerpt":"A systematic analysis of the near-threshold enhancement in the $\\bar pp$ invariant mass spectrum seen in the decay reactions $J/\\psi \\to x \\bar pp$ and $\\psi (3686) \\to x \\bar pp$ $(x = \\gamma,\\, \\omega,\\, \\rho,\\, \\pi,\\, \\eta)$ is presented. The enhancement is assumed to be due to the $\\bar NN$ final-state interaction (FSI) and the pertinent FSI effects are evaluated in an approach that is based on the distorted-wave Born approximation. For the $\\bar NN$ interaction a recent potential derived within chiral effective field theory and fitted to results of a partial-wave analysis of $\\bar pp$ sca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.00880","kind":"arxiv","version":1},"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"}