Reconstruction of B mesons

B mesons have been reconstructed in five decay channels of the type B->D^*+/-nπ(n=1,2,3) using data accumulated by the ARGUS experiment at the e^+e^- storage ring DORIS II at DESY. In total, we find 40 neutral B mesons above a background of 15+/-6 events with a mass of (5278.2+/-1.0+/-3.0) MeV/c^...
Ausführliche Beschreibung

B mesons have been reconstructed in five decay channels of the type B->D^*+/-nπ(n=1,2,3) using data accumulated by the ARGUS experiment at the e^+e^- storage ring DORIS II at DESY. In total, we find 40 neutral B mesons above a background of 15+/-6 events with a mass of (5278.2+/-1.0+/-3.0) MeV/c^2 and 32 charged B mesons above a background of 17+/-6 events with a mass of (5275.8+/-1.3+/-3.0) MeV/c^2. The decays B^0D^*^+π^-π^0, B^0D^*^+π^-π^-π^+, and B^-->D^*^+π^-π^-π^0 have been observed for the first time. We find substantially smaller branching ratios for the decay modes B^0->D^*^+π^- and B^-->D^*^+π^-π^- than previously published by the CLEO collaboration. Ausführliche Beschreibung