Meson spectra from overlap fermion on domain wall gauge configurations

TL;DR

This paper presents meson spectra calculations using overlap fermions on domain wall gauge configurations across multiple lattice sizes, employing advanced techniques to improve accuracy and report preliminary results on various mesonic properties.

Contribution

It introduces a method combining overlap fermions with domain wall gauge configurations and efficient correlator techniques for improved meson spectrum calculations.

Findings

Preliminary meson spectrum results obtained.

Effective reduction of errors in hadron correlators.

Initial insights into charmonium hyperfine splitting.

Abstract

We report meson spectra obtained by using valence overlap fermion propagators generated on a background of 2+1 flavor domain wall fermion gauge configurations on 16^3 X 32, 24^3 X 64 and 32^3 X 64 lattices. We use many-to-all correlators with Z3 grid source and low eigenmode substitution which is efficient in reducing errors for the hadron correlators. The preliminary results on meson spectrum, a0 correlators, and charmonium hyperfine splitting for three sea quark masses are reported here.