Kaon B-parameter with NF=2 dynamical Wilson fermions

Details Kaon B-parameter with NF=2 dynamical Wilson fermions Kaon B-parameter with NF=2 dynamical Wilson fermions

2005-10-23

arxiv.org/abs/hep-lat/0510096v1

PoS LAT2005 (2005) 365

Physics

High Energy Physics

High Energy Physics - Lattice

Talk given at 23rd International Symposium on Lattice Field Field: Lattice 2005, Trinity College, Dublin, Ireland, 25-30 Jul 2

Scientific paper

We 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

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