DELPHI

Preliminary measurement of Rs=Γs―s/Γhad using the DELPHI detector at LEP 100

A measurement of the branching fraction R s =Γ ss̄ /Γ had of the Z 0 into strange quarks was made. For this measurement energetic φ 0 mesons decaying into K + K − and charged kaons were used to tag the presence of e + e − → Z 0 → ss̄ events. 1.4 …

Contribution in the study of e+e- interactions in the DELPHI/CERN experiment using extensively the RICH detectors

Contribution in the study of e+e- interactions in the DELPHI/CERN experiment using extensively the RICH detectors