Hadron mass and decays constant predictions of the valence approximation to lattice QCD
- IBM Research, Yorktown Heights, NY (United States)
A key goal of the lattice formulation of QCD is to reproduce the masses and decay constants of the low-lying baryons and mesons. Lattice QCD mass and decay constant predictions for the real world are supposed to be obtained from masses and decay constants calculated with finite lattice spacing and finite lattice volume by taking the limits of zero spacing and infinite volume. In addition, since the algorithms used for hadron mass and decay constant calculations become progressively slower for small quark masses, results are presently found with quark masses much larger than the expected values of the up and down quark masses. Predictions for the properties of hadrons containing up and down quarks then require a further extrapolation to small quark masses. The author reports here mass and decay constant predictions combining all three extrapolations for Wilson quarks in the valence (quenched) approximation. This approximation may be viewed as replacing the momentum and frequency dependent color dielectric constant arising from quark-antiquark vacuum polarization with its zero-momentum, zero-frequency limit. These calculations used approximately one year of machine time on the GF11 parallel computer running at a sustained rate of between 5 and 7 Gflops.
- OSTI ID:
- 272822
- Report Number(s):
- CONF-930557-; ISSN 0003-0503; TRN: 96:002196-0032
- Journal Information:
- Bulletin of the American Physical Society, Vol. 38, Issue 5; Conference: Conference on physics computing, Albuquerque, NM (United States), 31 May - 4 Jun 1993; Other Information: PBD: May 1993
- Country of Publication:
- United States
- Language:
- English
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