Kaon B-parameter with NF=2 dynamical Wilson fermions

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dc.creatorMescia, F.
dc.creatorGimenez, V.
dc.creatorLubicz, V.
dc.creatorMartinelli, G.
dc.creatorSimula, S.
dc.creatorTarantino, C.
dc.date2005-10-23
dc.date.accessioned2026-07-07T06:46:33Z
dc.date.available2026-07-07T06:46:33Z
dc.descriptionWe present a preliminary study of the neutral kaon mixing bag parameter BK using two flavors of dynamical Wilson fermions. We determine the matrix element of the relevant DeltaS=2 operator by using both the conventional approach and the so called ``non-subtraction method'', and find that the latter leads to results with smaller uncertainties. After having implemented non-perturbative renormalization, we study the dependence of BK on the see quark mass. At our relatively heavy values of quark masses (0.60<M_P/M_V<0.75) such a dependence is found to be negligible and the results, within the statistical accuracy, are consistent with a quenched determination. As a preliminary result for the renormalization group invariant parameter we quote BKRGI=1.02(25).
dc.descriptionTalk given at 23rd International Symposium on Lattice Field Field: Lattice 2005, Trinity College, Dublin, Ireland, 25-30 Jul 2005
dc.identifierhttps://arxiv.org/abs/hep-lat/0510096
dc.identifierhttp://arxiv.org/abs/hep-lat/0510096
dc.identifierPoS LAT2005 (2005) 365
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/103372
dc.subjectHigh Energy Physics - Lattice
dc.titleKaon B-parameter with NF=2 dynamical Wilson fermions
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