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Charmonium spectrum from quenched anisotropic lattice QCD

2002
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Physical Review D, Particles and fields
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We present a detailed study of the charmonium spectrum using anisotropic lattice QCD. We first derive a tree-level improved clover quark action on the anisotropic lattice for arbitrary quark mass. The heavy quark mass dependences of the improvement coefficients, i.e. the ratio of the hopping parameters ζ=K_t/K_s and the clover coefficients c_s,t, are examined at the tree level. We then compute the charmonium spectrum in the quenched approximation employing ξ = a_s/a_t = 3 anisotropic lattices.

doi:10.1103/physrevd.65.094508
fatcat:nkl5uj7v2ne4nkbdabyobvs5yy