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K0-K0bar Mixing with Wilson Fermions without Subtractions

D. Becirevic·Ph. Boucaud·V. Gimenez·V. Lubicz·G. Martinelli·J. Micheli·M. Papinutto
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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.

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D. Becirevic, Ph. Boucaud, V. Gimenez, V. Lubicz, G. Martinelli, J. Micheli, M. Papinutto. 2000-05-19. K0-K0bar Mixing with Wilson Fermions without Subtractions. https://doi.org/10.1016/s0370-2693(00)00797-8

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