K0-K0bar Mixing with Wilson Fermions without Subtractions
arXiv:hep-lat/0005013 · doi:10.1016/S0370-2693(00)00797-8
Abstract
By using suitable Ward identities, we show that it is possible to compute K0-K0bar mixing without subtracting the terms generated by explicit chiral symmetry breaking present in Wilson-like lattice actions. The accuracy in the determination of the amplitudes is of O(a), which is the best one attainable in the absence of improvement.
10 pages, latex, 2 figures, typo in eq.(17) corrected
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