Kaon B parameter from quenched lattice QCD

被引：75

作者：

Aoki, S ^{[1
]}

Fukugita, M

Hashimoto, S

Ishizuka, N

Iwasaki, Y

Kanaya, K

Kuramashi, Y

Okawa, M

Ukawa, A

Yoshie, T

机构：

[1] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan

[2] Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 188, Japan

[3] High Energy Accelerator Res Org KEK, Ctr Res Comp, Tsukuba, Ibaraki 305, Japan

[4] Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 305, Japan

[5] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.80.5271

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present results of a large-scale simulation for the kaon B parameter B-K in quenched lattice QCD with the Kogut-Susskind quark action. Calculating B-K at 1% statistical accuracy for seven values of lattice spacing in the range a approximate to 0.24-0.04 fm on lattices up to 56(3) x 96, we verify the theoretically predicted quadratic a dependence. Strong indications are found that, with our level of accuracy, alpha(<(MS)over bar>)(1/a)(2) terms arising from our one-loop matching procedure have to be included in the continuum extrapolation. We present B-K(NDR, 2 GeV) = 0.628(42) as our final value, where NDR indicates naive dimensional regularization.

引用

页码：5271 / 5274

页数：4

共 23 条

[1] B-K with the Wilson quark action: A non-perturbative resolution of operator mixing using chiral ward identities [J].