Abstract
The production of prompt muons ine + e − annihilation has been studied at centre of mass energies near 34.5 GeV. The measured semi-muonic branching ratios ofb andc quarks areB(b»Xμv) =0.117±0.028±0.01 andB(c→Xμv)=0.082 ±0.012 +0.02a−0.01 . The fragmentation functions of heavy quarks are hard, <z b>=0.85 +0.10+0.02a−0.12–0.07 and <z c> =0.77 +0.05+0.03a−0.07–0.11 . Limits have been set on flavour changing neutral current decays:B(b→Xµ + µ −) <0.02 andB(b→Xµ + µ − (95% confidence level).
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a Supported by the Deutsches Bundesministerium für Forschung und Technologie
b Supported by the UK Science and Engineering Research Council
c Supported by the Minerva Gesellschaft für Forschung mbH
d Supported by the US Department of Energy contract WY-76-C-02-0881
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TASSO Collaboration., Althoff, M., Braunschweig, W. et al. Production and muonic decay of heavy quarks ine + e − annihilation at 34.5 GeV. Z. Phys. C - Particles and Fields 22, 219–229 (1984). https://doi.org/10.1007/BF01575783
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DOI: https://doi.org/10.1007/BF01575783