The Light Hadron Mass Spectrum with Non-Perturbatively O(a) Improved Wilson Fermions
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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