Lattice QCD Calculation of the Kaon B Parameter with the Wilson Quark Action
نویسندگان
چکیده
1Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan 2Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188, Japan 3Computing Research Center, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan 4Center for Computational Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan 5Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan (Received 27 May 1997; revised manuscript received 6 February 1998)
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The kaon B parameter is calculated in quenched lattice QCD with the Wilson quark action. The mixing problem of the ∆s = 2 four-quark operators is solved non-perturbatively with full use of chiral Ward identities, and this method enables us to construct the weak four-quark operators exhibiting good chiral behavior. We find BK(NDR, 2GeV) = 0.562(64) in the continuum limit, which agrees with the v...
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We present a detailed description of the method and results of our calculation of the kaon B parameter using the Wilson quark action in quenched QCD at β = 5.9 − 6.5. The mixing problem of the ∆s = 2 four-quark operators is solved non-perturbatively with full use of chiral Ward identities. We find BK (NDR, 2GeV) = 0.562(64) in the continuum limit, which agrees with the value obtained with the K...
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