Static potentials and glueball masses from QCD simulations with Wilson sea quarks

TL;DR

This study uses lattice QCD simulations with dynamical Wilson fermions to compute glueball, torelon, and hybrid potentials, providing insights into static potentials and mass spectra at various quark masses.

Contribution

It presents new calculations of glueball, torelon, and hybrid potentials in lattice QCD with dynamical Wilson fermions at physical sea quark masses.

Findings

Glueball and torelon masses determined at different quark masses.

Static potentials and hybrid potentials computed on large lattices.

Results span a range of pion-to-rho mass ratios from 0.57 to 0.83.

Abstract

We calculate glueball and torelon masses as well as the lowest lying hybrid potential in addition to the static ground state potential in lattice simulations of QCD with two flavours of dynamical Wilson fermions. The results are obtained on lattices with $16^3\times 32$ and $24^3\times 40$ sites at $\beta=5.6$, corresponding to a lattice spacing, $a^{-1}=2.65^{+5}_{-8}$ GeV, as determined from the Sommer force radius, at physical sea quark mass. The range spanned in the present study of five different quark masses is reflected in the ratios, $0.83\geq m_{\pi}/m_{\rho}\geq 0.57$.