Glueball mass measurements from improved staggered fermion simulations
Abstract
We present the first 2+1 flavor spectrum measurements of glueball states using high statistics simulations with improved staggered fermions. We find a spectrum consistent with quenched measurements of scalar, pseudoscalar, and tensor 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 2π states. We compare our results with the experimental glueball candidate spectrum as well as quenched glueball estimates.
- Publication:
-
Physical Review D
- Pub Date:
- August 2010
- DOI:
- 10.1103/PhysRevD.82.034501
- arXiv:
- arXiv:1005.2473
- Bibcode:
- 2010PhRvD..82c4501R
- Keywords:
-
- 11.15.Ha;
- 12.38.Gc;
- 14.40.Be;
- Lattice gauge theory;
- Lattice QCD calculations;
- High Energy Physics - Lattice;
- High Energy Physics - Phenomenology
- E-Print:
- 22 pages, 19 figures and 8 tables, minor additions on mixing post-referee