SEARCH FOR THE Bc MESON IN HADRONIC Z DECAYS BY ALEPH, DELPHI AND L3, AND RESONANT STRUCTURE AND FLAVOUR TAGGING IN THE Bi1 SYSTEM BY ALEPH

摘要

The Bc meson is searched for in a combined sample of ten million hadronic Z decays collected by ALEPH, DELPHI and L3 at LEP. No significant excess of events is found and upper limits are derived on the production rate multiplied by decay branching fractions. One very clean candidate event found by ALEPH is also described. With more than five hundred B mesons fully reconstructed by ALEPH, resonant structure in the Birr* system and B fl.avour tagging have been studied.