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
收藏
页码：133 / 141
页数：9
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