BK from quenched QCD with exact chiral symmetry -: art. no. 042001

被引：22

作者：

Garron, N

Giusti, L

Hoelbling, C

Lellouch, L

Rebbi, C

机构：

[1] CNRS Marseille Luminy, Ctr Phys Theor, F-13288 Marseille 9, France

[2] CERN, Div Theory, CH-1211 Geneva, Switzerland

[3] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.92.042001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a calculation of the standard model DeltaS=2 matrix element relevant to indirect CP violation in K-->pipi decays which uses Neuberger's chiral formulation of lattice fermions. The computation is performed in the quenched approximation on a 16(3)x32 lattice that has a lattice spacing asimilar to0.1 fm. The resulting bare matrix element is renormalized nonperturbatively. Our main result is B-K(RGI)=0.87(8)(-1-14)(+2+14), where the first error is statistical, the second is systematic, and the third is Sharpe's estimate of quenching and flavor-SU(3) breaking uncertainties.

引用

页数：4

共 37 条

[1] Light hadron spectrum and quark masses from quenched lattice QCD -: art. no. 034503 [J].