The 38th International Symposium on Lattice Field Theory

$B \to D^{(*)}\ell\nu$ semileptonic decays in lattice QCD with domain-wall heavy quarks

Jul 26, 2021, 9:15 PM

15m

Oral presentation QCD in searches for physics beyond the Standard Model QCD in searches for physics beyond the Standard Model

Speaker

Takashi Kaneko (KEK)

Description

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 varying bottom quark masses
up to 0.7 $a^{-1}$ to study heavy quark mass dependence and
discretization effects. We extrapolate the form factors
to the continuum limit and physical quark masses, and make a comparison
in the differential decay rate with experiment.

Presentation materials

$B \to D^{(*)}\ell\nu$ semileptonic decays in lattice QCD with domain-wall heavy quarks

lat21_kaneko.pdf