Charmonium Spectrum from Quenched QCD with Overlap Fermions
Abstract
We present preliminary results using overlap fermions for the charmonium spectrum, in particular for hyperfine splitting. Simulations are performed on 163 × 72 lattices, with Wilson gauge action at β=6.3345. Depending on how the scale is set, we obtain 104(5) MeV (using 1P-1S) or 88(4) MeV (using r0=0.5 fm) for the hyperfine splitting.
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