New Results From Lattice QCD: Non-Perturbative Renormalization and Quark Masses

Details New Results From Lattice QCD: Non-Perturbative Renormalization and Quark Masses New Results From Lattice QCD: Non-Perturbative Renormalization and Quark Masses

1998-10-29

arxiv.org/abs/hep-ph/9810532v1

Nucl.Phys.Proc.Suppl. 74 (1999) 296-299

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures. Invited talk given at the QCD 98 Euroconference, Montpellier, France, 2-8 July 1998

Scientific paper

10.1016/S0920-5632(99)00181-4

For the first time, we compute non-perturbatively, i.e. without lattice perturbation theory, the renormalization constants of two-fermion operators in the quenched approximation at $\beta=6.0$, 6.2 and 6.4 using the Wilson and the tree-level improved SW-Clover actions. We apply these renormalization constants to fully non-perturbatively estimate quark masses in the $\bar{MS}$ scheme from lattice simulations of both the hadron spectrum and the Axial Ward Identity in the quenched approximation. Some very preliminary unquenched Wilson results obtained from the gluon configurations generated by the T$\chi$L Collaboration at $\beta=5.6$ and $N_{f}=2$ are also discussed.

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