K0-K0bar Mixing with Wilson Fermions without Subtractions
classification
✦ hep-lat
keywords
k0-k0barmixingwithoutabsenceaccuracyactionsamplitudesattainable
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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.
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