The Light Hadron Mass Spectrum with Non-Perturbatively O(a) Improved Wilson Fermions
M. Göckeler, R. Horsley, H. Perlt, P. Rakow, G. Schierholz, A. Schiller, P. Stephenson
Abstract
We compute the light hadron mass spectrum in quenched lattice QCD at β= 6.0 using the Sheikholeslami-Wohlert fermionic action. The calculation is done for several choices of the coefficient cSW, including cSW = 0 and the recently proposed optimal value cSW = 1.769. We find that the individual masses change by up to 30\% under O(a) improvement. The spectrum calculation suggests cSW ≈ 1.4 for the optimal value of the coefficient.
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