Charmed spectroscopy from a nonperturbatively determined relativistic heavy quark action in full QCD

TL;DR

This paper reports a preliminary lattice QCD calculation of the charmed meson spectrum using a relativistic heavy quark action with nonperturbatively determined coefficients, employing a step-scaling method across multiple lattice spacings.

Contribution

It introduces a nonperturbative determination of heavy quark action coefficients and demonstrates a step-scaling procedure for improved spectrum calculations.

Findings

Preliminary charmed meson spectrum results obtained.

Successful nonperturbative coefficient determination method.

Validation of step-scaling approach across lattice spacings.

Abstract

We present a preliminary calculation of the charmed meson spectrum using the 2+1 flavor domain wall fermion lattice configurations currently being generated by the RBC and UKQCD collaborations. The calculation is performed using the 3-parameter, relativistic heavy quark action with nonperturbatively determined coefficients. We will also demonstrate a step-scaling procedure for determining these coefficients nonperturbatively using a series of quenched, gauge field ensembles generated for three different lattice spacings.