B_K from quenched overlap QCD

2); (2) CERN; (3) Boston University); C. Hoelbling (1); C. Rebbi (3) ((1) CPT Marseille; L. Giusti (1; L. Lellouch (1); N. Garron (1)

arxiv: hep-lat/0212015 · v1 · pith:VQ6RXRUEnew · submitted 2002-12-10 · ✦ hep-lat · hep-ph

B_K from quenched overlap QCD

N. Garron (1) , L. Giusti (1 , 2) , C. Hoelbling (1) , L. Lellouch (1) , C. Rebbi (3) ((1) CPT Marseille , (2) CERN , (3) Boston University) This is my paper

classification ✦ hep-lat hep-ph

keywords elementmatrixoverlapquenchedapproximationbarebetacalculation

0 comments

read the original abstract

We present an exploratory calculation of the standard model Delta S=2 matrix element relevant for indirect CP violation in K -> pi pi decays. The computation is performed with overlap fermions in the quenched approximation at beta=6.0 on a 16^3x32 lattice. The resulting bare matrix element is renormalized non-perturbatively. Our preliminary result is B_K^{NDR}(2 GeV)=0.61(7), where the error does not yet include an estimate of systematic uncertainties.

This paper has not been read by Pith yet.

B_K from quenched overlap QCD

discussion (0)