$B_s \to K\ell\nu$ form factors from lattice QCD with domain-wall heavy quarks.
P. Mohanta*,
T. Kaneko,
S. Hashimoto and
JLQCD Collaboration:*: corresponding author
Pre-published on:
May 04, 2024
Published on:
November 06, 2024
Abstract
We report on our on-going study of the $B_s \to K\ell\nu$ decay in $N_f=2+1$ lattice QCD. We employ fully relativistic setup in which
the Möbius domain-wall action is used for all quark flavors. The lattice cutoff is $a^{-1} \sim 2.5$ GeV, where we take bottom quark masses up to $m_Q\!<\!0.7a^{-1}$ in order to control discretization errors. We present preliminary results for the relevant form factors extracted from correlator ratios by inspecting their ground state saturation.
DOI: https://doi.org/10.22323/1.453.0267
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