251. Toward the continuum limit of BK with the quenched Kogut-Susskind quark action
- Author
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JLQCD Collaboration, Aoki, S., Fukugita, M., Hashimoto, S., Ishizuka, N., Iwasaki, Y., Kanaya, K., Kuramashi, Y., Mino, H., Okawa, M., Ukawa, A., and Yoshie, T.
- Subjects
Quantum chromodynamics ,Physics ,Quark ,Nuclear and High Energy Physics ,Particle physics ,High Energy Physics::Lattice ,High Energy Physics::Phenomenology ,High Energy Physics - Lattice (hep-lat) ,FOS: Physical sciences ,Curvature ,Atomic and Molecular Physics, and Optics ,Action (physics) ,High Energy Physics - Lattice ,Lattice constant ,Beta (velocity) ,Limit (mathematics) ,Continuum (set theory) - Abstract
We present new results of our ongoing project toward a precision determination of the kaon $B$ parameter with the Kogut-Susskind quark action in quenched QCD. New results taken at $\beta$=6.4 and $\beta=5.7$ suggest that an apparently linear $a$ dependence of $B_K$ previously observed for $\beta=5.85-6.2$ arises from a change of curvature from convex to concave as the lattice spacing is reduced. Fitting data for $\beta\geq 5.93$ with an $O(a^2)$ form yields $B_K$(NDR,2 GeV)=0.587(7)(17) in the continuum limit. We also describe a finite-size study of $B_K$ at $\beta=$ 6.0 and 6.4, and a reanalysis of the theoretical argument for $O(a^2)$ behavior., Comment: 4 pages incl. 2 figures, Latex+espcrc2+epsf, Talk presented at LATTICE96(poster) by S. Aoki
- Published
- 1997