$(2+1)$-$d$ Glueball Spectrum within a Constituent Picture

TL;DR

This paper demonstrates that the observed glueball spectrum in (2+1)-dimensional lattice QCD aligns well with a constituent model, consistent across different gauge groups and related states.

Contribution

It introduces a constituent picture that accurately describes the glueball spectrum in (2+1) dimensions across various gauge groups.

Findings

Glueball spectrum matches constituent model predictions

Agreement extends to gluelumps and different gauge groups

Supports a universal constituent picture for (2+1)d glueballs

Abstract

The quantum numbers and mass hierarchy of the glueballs observed in $(2+1)$-dimensional lattice QCD with gauge group SU($N_c$) are shown to be in agreement with a constituent picture. The agreement is maintained when going from glueballs to gluelumps, and when the gauge group SO($2N_c$) is taken instead of SU($N_c$).