Glueball mass measurements from improved staggered fermion simulations
High Energy Physics - Lattice
2015-03-17 v2 High Energy Physics - Phenomenology
Abstract
We present the first 2+1 flavour spectrum measurements of glueball states using high statistics simulations with improved staggered fermions. We find a spectrum consistent with quenched measurements of scalar, pseudoscalar andtensor glueball states. The measurements were made using 5000 configurations at a lattice spacing of 0.123 fm and pion mass of 280 MeV and 3000 configurations at 0.092 fm with a pion mass of 360 MeV. We see some evidence of coupling to 2 pion states. We compare our results with the experimental glueball candidate spectrum as well as quenched glueball estimates.
Keywords
Cite
@article{arxiv.1005.2473,
title = {Glueball mass measurements from improved staggered fermion simulations},
author = {Christopher M. Richards and Alan C. Irving and Eric B. Gregory and Craig McNeile},
journal= {arXiv preprint arXiv:1005.2473},
year = {2015}
}
Comments
22 pages, 19 figures and 8 tables, minor additions on mixing post-referee