D meson semileptonic decays in lattice QCD with Moebius domain-wall quarks

Understand

We report on our study of the D meson semileptonic decays in 2+1 flavor lattice QCD.

• Gauge ensembles are generated at three lattice cutoffs up to 4.5 GeV and with pion masses as low as 300 MeV.
• We employ the Moebius domain-wall fermion action for both light and charm quarks.
• We report our preliminary results for the vector and scalar form factors and discuss their dependence on the momentum transfer, quark masses and lattice spacing.