Kaon B parameter from quenched Lattice QCD
نویسندگان
چکیده
We present results of a large-scale simulation for the Kaon B parameter BK in quenched lattice QCD with the Kogut-Susskind quark action. Calculating BK at 1% statistical accuracy for seven values of lattice spacing in the range a ≈ 0.24 − 0.04 fm on lattices up to 563 × 96, we verify a quadratic a dependence of BK theoretically predicted. Strong indications are found that, with our level of accuracy, αMS(1/a) 2 terms arising from our one-loop matching procedure have to be included in the continuum extrapolation. We present BK(NDR, 2 GeV)=0.628(42) as our final value, as obtained by a fit including the αMS(1/a) 2 term. 11.15Ha, 12.38.Gc, 12.38.Aw Typeset using REVTEX
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