THE SEMILEPTONIC DECAY FRACTION OF B-MESONS IN THE LIGHT OF INTERFERING AMPLITUDES

被引：9

作者：

HONSCHEID, K ^{[1
]}

SCHUBERT, KR ^{[1
]}

WALDI, R ^{[1
]}

机构：

[1] TECH UNIV DRESDEN,INST KERN & TEILCHENPHYS,D-01062 DRESDEN,GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1994年 / 63卷 / 01期

关键词：

D O I：

10.1007/BF01577550

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Consequences of the interference between spectator amplitudes for the lifetimes and semileptonic decay fractions of B0 and B+ mesons are discussed. Extracting these amplitudes from a fit to 11 exclusive hadronic B decay fractions we find a1=1.05+/-0.03+/-0.10, a2=+0.227+/-0.012+/-0.022, an inclusive semileptonic decay fraction of (11.2+/-0.5+/-1.7)%, and a lifetime ratio tau(B+)/tau(B0)=0.83+/-0.01+/-0.01.

引用

页码：117 / 120

页数：4

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