arXiv:hep-lat/9705035·v1·High Energy Physics — Lattice
Lattice QCD Calculation of the Kaon B-parameter with the Wilson Quark Action
JLQCD Collaboration: S.Aoki🇯🇵 · M.Fukugita🇯🇵 · S.Hashimoto🇯🇵 · N.Ishizuka🇯🇵 · Y.Iwasaki🇯🇵 · K.Kanaya🇯🇵 · Y.Kuramashi🇯🇵 · M.Okawa🇯🇵 · A.Ukawa🇯🇵 · T.Yoshié🇯🇵
Abstract
The kaon B parameter is calculated in quenched lattice QCD with the Wilson quark action. The mixing problem of the \Delta 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 B_K(NDR, 2GeV)=0.562(64) in the continuum limit, which agrees with the value obtained with the Kogut-Susskind quark action.
Comments: 11 pages, latex source-file, 4 figures as ps-file