A high statistics lattice calculation of heavy-light meson decay constants

被引：22

作者：

Allton, CR

Conti, L

Crisafulli, M

Guisti, L

Martinelli, G

Rapuano, F

机构：

[1] UNIV ROMA LA SAPIENZA, DIPARTIMENTO FIS, I-00185 ROME, ITALY

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

[3] SCUOLA NORMALE SUPER PISA, I-56100 PISA, ITALY

[4] IST NAZL FIS NUCL, SEZ PISA, I-56100 PISA, ITALY

来源：

PHYSICS LETTERS B | 1997年 / 405卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(97)00580-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a high statistics study of the D- and B-meson decay constants. The results were obtained by using the Clover and Wilson lattice actions at two different values of the lattice spacing a, corresponding to beta = 6.0 and 6.2. After a careful analysis of the systematic errors present in the extraction of the physical results, by assuming quite conservative discretization errors, we find f(Ds) = 237 +/- 16 MeV, f(D) = 221 +/- 17 MeV (f(Ds)/f(D) = 1.07(4)), f(Bs) = 205 +/- 35 MeV, f(B) = 180 +/- 32 MeV (f(Bs)/f(B) = 1.14(8)), in good agreement with previous estimates. (C) 1997 Elsevier Science B.V.

引用

页码：133 / 141

页数：9

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