Excited $D$ and $D_{s}$ meson spectroscopy from lattice QCD

TL;DR

This paper reports on the calculation of highly excited charm-light and charm-strange meson spectra using advanced lattice QCD techniques, revealing high-spin states and potential hybrid mesons with high statistical precision.

Contribution

It introduces novel methods and a large operator basis to accurately extract excited meson spectra and identify candidate hybrid states in lattice QCD.

Findings

Identification of highly excited charm mesons

Observation of candidate hybrid mesons

High statistical precision in spectral extraction

Abstract

We present highly excited spectra of charm-light and charm-strange mesons from dynamical lattice QCD. Our calculations are performed on anisotropic $N_{f} = 2+1$ dynamical ensembles generated by the Hadron Spectrum Collaboration. The use of novel techniques and a large basis of interpolating operators have allowed us to extract these spectra to a high degree of statistical precision, extract states of high spin and observe candidate hybrid mesons. We interpret and discuss our results in light of the current experimental situation.