Actions for b Decay Charm Counting Via Topological Vertexing [electronic resource].

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b Decay Charm Counting Via Topological Vertexing [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2001.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
vp : digital, PDF file
Additional Creators
Stanford Linear Accelerator Center, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We present a new and unique measurement of the branching fractions of b hadrons to states with 0, 1, and 2 open charm hadrons, using a sample of 350,000 Z's collected during the SLD/SLC 97-98 run. The analysis takes advantage of the excellent vertexing resolution of the VXD3, a pixel-based CCD vertex detector, which allows the separation of B and cascade D decay vertices. Analysis of the decay length distributions for each of the 1-, 2-, and 3-vertex topologies allows the extraction of the inclusive branching fractions. We measure: BR(b → 0D) = 5.6% ± 1.1% (stat.)± 2.0% (syst.), BR(b → 2D) = 24.6% ± 1.4%(stat.) ± 4.0%(syst.) (preliminary), where b and D represent mixtures of open b and open c hadrons.
Report Numbers
E 1.99:slac-pub-8686
slac-pub-8686
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Note
Published through SciTech Connect.
01/04/2001.
"slac-pub-8686"
Chou, Aaron S.
Type of Report and Period Covered Note
Topical;
Funding Information
AC03-76SF00515
View MARC record | catkey: 14710905