{"paper":{"title":"$K \\pi$ scattering and the $K^*(892)$ resonance in 2+1 flavor QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"Andrew Pochinsky, Giorgio Silvi, Gumaro Rendon, John Negele, Luka Leskovec, Marcus Petschlies, Sergey Syritsyn, Srijit Paul, Stefan Meinel","submitted_at":"2018-11-27T00:06:01Z","abstract_excerpt":"In this project, we will compute the form factors relevant for $B \\to K^*(\\to K \\pi)\\ell^+\\ell^-$ decays. To map the finite-volume matrix elements computed on the lattice to the infinite-volume $B \\to K \\pi$ matrix elements, the $K \\pi$ scattering amplitude needs to be determined using L\\\"uscher's method. Here we present preliminary results from our calculations with $2+1$ flavors of dynamical clover fermions. We extract the $P$-wave scattering phase shifts and determine the $K^*$ resonance mass and the $K^* K \\pi$ coupling for two different ensembles with pion masses of $317(2)$ and $178(2)$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.10750","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"}