{"paper":{"title":"Semileptonic $B \\to D^{(\\ast)} \\ell\\nu$ Decay Form Factors using the Oktay-Kronfeld Action","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"Benjamin J. Choi, Jaehoon Leem, Rajan Gupta, Seungyeob Jwa, Sungwoo Park (LANL/SWME Collaboration), Sunkyu Lee, Tanmoy Bhattacharya, Weonjong Lee, Yong-Chull Jang","submitted_at":"2020-03-20T11:33:34Z","abstract_excerpt":"We report recent progress in calculating semileptonic form factors for the $\\bar{B} \\to D^\\ast \\ell \\bar{\\nu}$ and $\\bar{B} \\to D \\ell \\bar{\\nu}$ decays using the Oktay-Kronfeld (OK) action for bottom and charm quarks. We use the second order in heavy quark effective power counting $\\mathcal{O}(\\lambda^2)$ improved currents in this work. The HISQ action is used for the light spectator quarks. We analyzed four $2+1+1$-flavor MILC HISQ ensembles with $a\\approx 0.09\\,\\mathrm{fm}$, $0.12\\,\\mathrm{fm}$ and $M_\\pi \\approx 220\\,\\mathrm{MeV}$, $310\\,\\mathrm{MeV}$: $a09m220$, $a09m310$, $a12m220$, $a12"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.09206","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/2003.09206/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"}