STUDY OF INCLUSIVE SEMILEPTONIC-B MESON DECAYS

被引：51

作者：

ALBRECHT, H

机构：

[1] DESY

[2] Institut für Physik2 2 Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054D051P., Universität Dortmund

[3] Physikalisches Institut3 3 Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054ER12P., Universität Erlangen-Nürnberg

[4] Institute für Hochenergiephysik4 4 Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054HD24P., Universität Heidelberg

[5] Max-Planck-Institut für Kernphysik

[6] Institute of Particle Physics8 8 Supported by the Natural Sciences and Engineering Research Council, Canada.

[7] Institut für Experimentelle Kernphysik10 10 Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054KA17P., Universität Karlsruhe

[8] Institute of Physics13 13 Supported by the Swedish Research Council., University of Lund

[9] Institute of Theoretical and Experimental Physics

[10] University of South Carolina14 14 Supported by the US, Department of Energy, Columbia, SC 29208

来源：

PHYSICS LETTERS B | 1990年 / 249卷 / 02期

关键词：

D O I：

10.1016/0370-2693(90)91269-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the ARGUS detector at the e+e- storage ring DORIS-II, we have measured the inclusive semileptonic decays of B-mesons into electrons and muons. The data originate from 220.5 events/pb on the Υ{hooked}(4S) resonance. We find BR (B→e+veX = (10.3 ± 0.6 ± 0.2)% and BR (B→μ+vμX) = (10.0 ± 0.6 ± 0.2)% using the model of Altarelli et al. for extrapolating over all lepton momenta, and BR (B→e+veX) = (9.9±0.6)%, BR(B→μ+vμX) = (9.7±0.6)% using the model of Grinstein et al. For semileptonic decays into baryons, we obtain an upper limit of BR (B→pe+vX)<0.16%(90%CL). © 1990.

引用

页码：359 / 365

页数：7

共 19 条

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