{"paper":{"title":"Determination of $s$- and $p$-wave $I=1/2$ $K\\pi$ scattering amplitudes in $N_{\\mathrm{f}}=2+1$ lattice QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"hep-lat","authors_text":"Andrew Hanlon, Ben H\\\"orz, Colin Morningstar, Jacob Fallica, John Bulava, Ruair\\'i Brett","submitted_at":"2018-02-09T02:10:24Z","abstract_excerpt":"The elastic $I=1/2$, $s$- and $p$-wave kaon-pion scattering amplitudes are calculated using a single ensemble of anisotropic lattice QCD gauge field configurations with $N_{\\mathrm{f}} = 2+1$ flavors of dynamical Wilson-clover fermions at $m_{\\pi} = 230\\mathrm{MeV}$. A large spatial extent of $L = 3.7\\mathrm{fm}$ enables a good energy resolution while partial wave mixing due to the reduced symmetries of the finite volume is treated explicitly.The $p$-wave amplitude is well described by a Breit-Wigner shape with parameters $m_{K^{*}}/m_{\\pi} = 3.808(18)$ and $g^{\\mathrm{BW}}_{K^{*}K\\pi} = 5.33("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.03100","kind":"arxiv","version":2},"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"}