We are studying the effects of light dynamical quarks on the excitation energies of a flux tube between a static quark and antiquark. We report preliminary results of an analysis of the ground state potential and the CL+ and lIU potentials. We have measured these potentials on closely matched ense
Static quarks with improved statistical precision
โ Scribed by M. Della Morte; S. Durr; J. Heitger; H. Molke; J. Rolf; A. Shindler; R. Sommer
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 260 KB
- Volume
- 129-130
- Category
- Article
- ISSN
- 0920-5632
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โฆ Synopsis
We present a numerical study for different discretisations of the static action, concerning cut-off effects and the growth of statistical errors with Euclidean time. An error reduction by an order of magnitude can be obtained with respect to the Eichten-Hill action, for time separations beyond 1.3 fm, keeping discretization errors small. The best actions lead to a big improvement on the precision of the quark mass A&, and &, in the static a,pproximation.
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