Glueball mass measurements from improved staggered fermion simulations

Details Glueball mass measurements from improved staggered fermion simulations Glueball mass measurements from improved staggered fermion simulations

2010-05-14

arxiv.org/abs/1005.2473v2

Physics

High Energy Physics

High Energy Physics - Lattice

22 pages, 19 figures and 8 tables, minor additions on mixing post-referee

Scientific paper

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.

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