A HIGH STATISTICS LATTICE CALCULATION OF F(B)(STATIC) AT BETA=6.2 USING THE CLOVER ACTION

被引：34

作者：

ALLTON, CR

CRISAFULLI, M

LUBICZ, V

MARTINELLI, G

SALINA, G

VLADIKAS, A

BARTOLONI, A

BATTISTA, C

CABASINO, S

CABIBBO, N

MARZANO, F

PAOLUCCI, PS

PECH, J

RAPUANO, F

SARNO, R

TODESCO, GM

TORELLI, M

TROSS, W

VICINI, P

机构：

[1] IST NAZL FIS NUCL, I-00185 ROME, ITALY

[2] UNIV ROMA TOR VERGATA, DIPARTIMENTO FIS, I-00173 ROME, ITALY

[3] CERN, DIV THEORY, CH-1211 GENEVA 23, SWITZERLAND

来源：

PHYSICS LETTERS B | 1994年 / 326卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)91325-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a calculation of f(B) in the static limit, obtained by numerical simulation of quenched QCD, at beta = 6.2 on a 18(3) x 64 lattice, using the SW-Clover quark action. The decay constant has been extracted by studying heavy (static)-light correlation functions of different smeared operators, on a sample of 220 gauge field configurations. We have obtained f(B)static = (290 +/- 15 +/- 45) MeV, where the first error comes from the uncertainty in the determination of the matrix element and the second comes from the uncertainty in the lattice spacing. We also obtain M(Bs) - M(Bd) = (70 +/- 10) MeV and f(Bs)stat/f(Bd)stat = 1.11 (3). A comparison of our results with other calculations of the same quantity is made.

引用

页码：295 / 302

页数：8

共 32 条

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