{"paper":{"title":"$D$ meson Semileptonic Decay Form Factors at $q^2 = 0$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"A. Bazavov, A. S. Kronfeld, A. X. El-Khadra, C. DeTar, C. W. Bernard, Daping Du, D. Toussaint, E. G\\'amiz, E. T. Neil, J. Komijani, J. Laiho, J. N. Simone, P. B. Mackenzie, Ran Zhou, R. L. Sugar, R. S. Van de Water, Ruizi Li, Steven Gottlieb, T. Primer, U. M. Heller","submitted_at":"2019-01-25T17:06:49Z","abstract_excerpt":"We discuss preliminary results for the vector form factors $f_+^{\\{\\pi,K\\}}$ at zero-momentum transfer for the decays $D\\to\\pi\\ell\\nu$ and $D\\to K \\ell\\nu$ using MILC's $N_f = 2+1+1$ HISQ ensembles at four lattice spacings, $a \\approx 0.042, 0.06, 0.09$, and 0.12 fm, and various HISQ quark masses down to the (degenerate) physical light quark mass. We use the kinematic constraint $f_+(q^2)= f_0(q^2)$ at $q^2 = 0$ to determine the vector form factor from our study of the scalar current, which yields $f_0(0)$. Results are extrapolated to the continuum physical point in the framework of hard pion/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.08989","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":""},"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"}