Lattice QCD calculation of the kaon B parameter with the Wilson quark action

被引：17

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, 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 / 81卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.81.1778

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 nonperturbatively 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,2 GeV) = 0.69(7) (where NDR denotes naive dimensional regularization) at the lattice cutoff scale of a(-1) = 2.7-4.3 GeV.

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页码：1778 / 1781

页数：4

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