Abstract
The production of b and c quarks in e+e- annihilation has been studied with the CELLO detector in the range from 35 GeV up to the highest PETRA energies. The heavy quarks have been tagged by their semileptonic decays. The charge asymmetries for b quarks at 35 and 43 GeV have been found to be Ab=-(22.2±8.1)% and Ab=-(49.1±16.5)%, respectively, using a method incorporating jet variables and their correlations for the separation of the heavy quarks from the back ground of the lighter quarks. For c quarks we obtain Ac=-(12.9±8.8)% and Ac=+(7.7±14.0)%, respectively. The axial vector coupling constants of the heavy quarks c and b are found to be ac=+(0.29±0.46) and ab=-(1.15±0.41) taking {Mathematical expression} mixing into account. The results are in agreement with the expectations from the standard model.
Original language | English |
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Pages (from-to) | 333-342 |
Number of pages | 10 |
Journal | European Physical Journal C |
Volume | 47 |
Issue number | 3 |
DOIs | |
State | Published - Sep 1990 |