K0-K0bar Mixing with Wilson Fermions without Subtractions

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

doi:10.1016/S0370-2693(00)00797-8

K0-K0bar Mixing with Wilson Fermions without Subtractions

High Energy Physics - Lattice 2010-03-19 v2

Authors: 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.

Keywords

K0-K0bar mixing Wilson fermions Ward identities chiral symmetry breaking lattice QCD O(a) accuracy

Cite

@article{arxiv.hep-lat/0005013,
  title  = {K0-K0bar Mixing with Wilson Fermions without Subtractions},
  author = {D. Becirevic and Ph. Boucaud and V. Gimenez and V. Lubicz and G. Martinelli and J. Micheli and M. Papinutto},
  journal= {arXiv preprint arXiv:hep-lat/0005013},
  year   = {2010}
}

Comments

10 pages, latex, 2 figures, typo in eq.(17) corrected

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