Flavor-singlet mesons in N_f=2+1 QCD with dynamical overlap quarks

TL;DR

This study investigates the spectrum of flavor-singlet mesons in three-flavor QCD using dynamical overlap quarks, providing preliminary results on pseudoscalar and vector mesons with near-physical quark masses.

Contribution

First to analyze flavor-singlet mesons in N_f=2+1 QCD with dynamical overlap quarks on a fine lattice at near-physical quark masses.

Findings

Preliminary spectrum results for flavor-singlet pseudoscalar and vector mesons.

Use of all-to-all quark propagators for correlator calculations.

Simulation at near-physical strange quark mass.

Abstract

We report on our study of flavor-singlet mesons in three-flavor QCD with dynamical overlap quarks. Gauge ensembles are generated on a 16^3 x 48 lattice at a lattice spacing of 0.10 fm with the strange quark masses around its physical value m_s,phys and up and down quark masses down to m_s,phys/5. Connected and disconnected meson correlators are calculated using the all-to-all quark propagator. We present our preliminary results on the spectrum of flavor-singlet pseudoscalar and vector mesons.