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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
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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 $c_{SW}$, including $c_{SW} = 0$ and the recently proposed optimal value $c_{SW} = 1.769$. We find that the individual masses change by up to 30\% under $O(a)$ improvement. The spectrum calculation suggests $c_{SW} \approx 1.4$ for the optimal value of the coefficient.

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M. Göckeler, R. Horsley, H. Perlt, P. Rakow, G. Schierholz, A. Schiller, P. Stephenson. 1996-09-03. The Light Hadron Mass Spectrum with Non-Perturbatively O(a) Improved Wilson Fermions. https://doi.org/10.1016/s0370-2693(96)01499-2

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