PROPERTIES OF B-MESONS IN LATTICE QCD

被引：75

作者：

DUNCAN, A

EICHTEN, E

FLYNN, J

HILL, B

HOCKNEY, G

THACKER, H

机构：

[1] FERMILAB NATL ACCELERATOR LAB, BATAVIA, IL 60510 USA

[2] UNIV SOUTHAMPTON, DEPT PHYS, SOUTHAMPTON SO17 1BJ, HANTS, ENGLAND

[3] UNIV CALIF LOS ANGELES, DEPT PHYS, LOS ANGELES, CA 90024 USA

[4] UNIV VIRGINIA, DEPT PHYS, CHARLOTTESVILLE, VA 22901 USA

来源：

PHYSICAL REVIEW D | 1995年 / 51卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.51.5101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The results of an extensive study of B-meson properties in quenched lattice QCD are presented. The studies are carried out in the static quark limit where the b quark is taken to be infinitely massive. Our computations rely on a multistate smearing method introduced previously, with smearing functions generated from a relativistic lattice quark model. Systematic errors arising from excited state contamination, finite volume effects, and the chiral extrapolation for the light quarks are estimated. We obtain continuum results for the mass splitting MBs-MBu=86±12(stat)-9+7(syst) MeV, the ratio of decay constants fBs/fBu=1.22±0.04(stat)±0.02(syst). For the B-meson decay constant we separately exhibit the sizable uncertainties in the extrapolation to the continuum limit (a→0) and higher-order perturbative matching. We obtain fB=188±23(stat)±15(syst)-0+26(extrap)±14(pert) MeV. © 1995 The American Physical Society.

引用

页码：5101 / 5129

页数：29

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