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[en] Using the ARGUS detector at the e+e- storage ring DORIS II at DESY, we have made two measurements of the mixing parameter χd using kaons as flavour tags. Using D*+ K± correlations we found χd-0.20±0.13±0.12 and from the study of (D*+l-) K± correlations we obtained χd=0.19±0.07±0.09. The branching ratio for anti B→D*+ X has been updated: Br(anti B→D*+X)=(19.6±1.9)%. We have also determined the average multiplicity of charged kaons in B0 decays to be 0.78±0.08. (orig.)
Source
Nov 1995; 16 p; ISSN 0418-9833; 