Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1994-11-11
Nucl.Phys.Proc.Suppl. 42 (1995) 370-372
Physics
High Energy Physics
High Energy Physics - Lattice
Talk at Lattice '94: 3 pages, latex using espcrc2 and epsf with 4 tar'd and feathered PS figures appended in self-extracting s
Scientific paper
10.1016/0920-5632(95)00253-6
We investigate point-to-point correlation functions for various mesonic and baryonic channels using the ${\cal O}(a)$-improved Wilson action due to Sheikholeslami and Wohlert. We consider propagators to both time slices 0 and 1. We find that discretisation effects are more pronounced than those reported with unimproved Wilson fermions, but that the same procedure for removing finite size effects is successful. Extrapolating to the chiral limit, we see the notable features predicted phenomenologically: the ratio of interacting to free correlators in the vector channel is roughly constant to about 1 fm, while in the pseudoscalar channel the ratio increases markedly due to the strong binding.
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