We use a variational technique to study heavy glueballs on gauge configurations generated with 2+1 flavours of ASQTAD improved staggered fermions. The variational technique includes glueball scattering states. The measurements were made using 2150 configurations at 0.092 fm with a pion mass of 360 MeV. We report masses for 10 glueball states. We discuss the prospects for unquenched lattice QCD calculations of the oddballs.
@article{arxiv.1208.1858,
title = {Towards the glueball spectrum from unquenched lattice QCD},
author = {E. Gregory and A. Irving and B. Lucini and C. McNeile and A. Rago and C. Richards and E. Rinaldi},
journal= {arXiv preprint arXiv:1208.1858},
year = {2012}
}
Comments
19 pages, 4 tables and 8 figures. One figure added. Now matches the published version