B K from Quenched Overlap Qcd *
نویسندگان
چکیده
We present an exploratory calculation of the standard model ∆S = 2 matrix element relevant for indirect CP violation in K → ππ decays. The computation is performed with overlap fermions in the quenched approximation at β = 6.0 on a 16 3 × 32 lattice. The resulting bare matrix element is renormalized non-perturbatively. Our preliminary result is B NDR K (2 GeV) = 0.61(7), where the error does not yet include an estimate of systematic uncertainties.
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تاریخ انتشار 2002