{"paper":{"title":"$\\eta_c\\eta_c$ and $J/\\psi J/\\psi$ scatterings from lattice QCD","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Chunjiang Shi, Geng Li, Wei Sun, Ying Chen","submitted_at":"2025-05-29T08:04:53Z","abstract_excerpt":"We investigate the $J^{PC}=(0,2)^{++}$ $\\eta_c \\eta_c$ and $J/\\psi J/\\psi$ scatterings in $N_f=2$ lattice QCD at two pion masses $m_\\pi\\approx 420$\\,MeV and 250\\,MeV. The quark field smearing scheme used in the distillation method strongly suppresses high-momentum states, thereby limiting the maximum accessible center-of-mass energy in this study to approximately 6.6\\,GeV. Given the observed near-decoupling of the $\\eta_c\\eta_c$ and $J/\\psi J/\\psi$ channels, we analyze their scattering properties using the single-channel L\\\"{u}scher's method. In $0^{++}$ channels, $\\eta_c\\eta_c$ and $J/\\psi J/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.23220","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.23220/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}