PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
$B \to D^{(*)}\ell\nu$ semileptonic decays in lattice QCD with domain-wall heavy quarks
T. Kaneko*, Y. Aoki, B. Colquhoun, M. Faur, H. Fukaya, S. Hashimoto, J. Koponen and E. Kou
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Pre-published on: May 16, 2022
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We calculate the $B\!\to\!D^{(*)}\ell\nu$ form factors in 2+1 flavor
relativistic lattice QCD by employing the Moebius domain-wall action
for all quark flavors.
Our simulations are carried out at lattice cut-offs $a^{-1} \sim 2.5$,
3.6 and 4.5 GeV with the bottom quark masses up to 0.7 $a^{-1}$
to control discretization effects.
We extrapolate the form factors to the continuum limit and
physical quark masses, and discuss systematic uncertainties
of the form factors.
DOI: https://doi.org/10.22323/1.396.0561
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