D meson semileptonic form factors in Nf=3 QCD with M\"obius domain-wall quarks

TL;DR

This paper reports a lattice QCD calculation of D meson semileptonic form factors using M"obius domain-wall quarks across multiple lattice spacings and light quark masses, providing insights into their dependence on various parameters.

Contribution

First calculation of D  pi and D  K semileptonic form factors in Nf=2+1 lattice QCD using M"obius domain-wall quarks at multiple lattice spacings.

Findings

Results for vector and scalar form factors are presented.

Form factors' dependence on lattice spacing, quark masses, and momentum transfer is analyzed.

Data supports improved understanding of D meson semileptonic decays.

Abstract

We present our calculation of D \to pi and D \to K semileptonic form factors in Nf = 2+1 lattice QCD. We simulate three lattice cutoffs 1/a \sim 2.5, 3.6 and 4.5 GeV with pion masses as low as 230 MeV. The M\"obius domain-wall action is employed for both light and charm quarks. We present our results for the vector and scalar form factors and discuss their dependence on the lattice spacing, light quark masses and momentum transfer.