{"paper":{"title":"Lattice determination of $I= 0$ and 2 $\\pi\\pi$ scattering phase shifts with a physical pion mass","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"hep-lat","authors_text":"A.S. Meyer, A. Soni, C. Kelly, C. Lehner, C.T. Sachrajda, D. Hoying, D.J. Murphy, M. Bruno, N.H. Christ, P.A. Boyle, R.D. Mawhinney, T. Blum, T. Wang","submitted_at":"2021-03-28T13:42:22Z","abstract_excerpt":"Phase shifts for $s$-wave $\\pi\\pi$ scattering in both the $I=0$ and $I=2$ channels are determined from a lattice QCD calculation performed on 741 gauge configurations obeying G-parity boundary conditions with a physical pion mass and lattice size of $32^3\\times 64$. These results support our recent study of direct CP violation in $K\\to\\pi\\pi$ decay \\cite{Abbott:2020hxn}, improving our earlier 2015 calculation \\cite{Bai:2015nea}. The phase shifts are determined for both stationary and moving $\\pi\\pi$ systems, at three ($I=0$) and four ($I=2$) different total momenta. We implement several $\\pi\\p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.15131","kind":"arxiv","version":3},"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/2103.15131/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"}