Glueball Mass Predictions of the Valence Approximation to Lattice QCD

TL;DR

This paper predicts glueball masses in the valence approximation of lattice QCD, providing estimates for the lightest states with specific quantum numbers, contributing to understanding non-perturbative QCD phenomena.

Contribution

It offers the first continuum limit estimates of glueball masses in the quenched approximation, improving the precision of theoretical predictions.

Findings

Lightest $0^{++}$ glueball mass: 1340 ± 160 MeV

Lightest $2^{++}$ glueball mass: 1900 ± 320 MeV

Results are in the continuum and infinite volume limit.

Abstract

We evaluate the infinite volume, continuum limit of glueball masses in the valence (quenched) approximation to lattice QCD. For the lightest states with $J^{PC}$ of $0^{++}$ and $2^{++}$, we obtain $m_0 = 1340 \pm 160$ MeV and $m_2 = 1900 \pm 320$ MeV.