Decays of mesons with charm quarks on the lattice

TL;DR

This paper studies charm quark mesons using lattice QCD with improved techniques, providing decay constants and preliminary form factors for semileptonic D_s decays.

Contribution

It presents new lattice QCD calculations of decay constants and initial form factor results for D_s mesons with charm quarks, employing fine lattices and improved actions.

Findings

Decay constants for charm mesons calculated

Preliminary form factors for D_s semileptonic decays obtained

Results demonstrate feasibility of precise lattice studies of charm mesons

Abstract

We investigate mesons containing charm quarks on fine lattices with a^{-1} \sim 5 GeV. The quenched approximation is employed using the Wilson gauge action at \beta = 6.6 and nonperturbatively O(a) improved Wilson quarks. We present results for decay constants using various interpolating fields and give preliminary results for form factors of semileptonic decays of D_s mesons to light pseudoscalar mesons.