A determination of the properties of the neutral intermediate vector boson Z<SUP>0</SUP>
- Adeva, B.
- Adriani, O.
- Aguilar-Benitez, M.
- Gurtu, A.
- et., al
DOIAbstract
We report the results of first physics runs of the L3 detector at LEP. Based on 2538 hadron events, we determined the mass mz0 and the width Γz0 of the intermediate vector boson Z0 to be mz0=91.132±0.057 GeV (not including the 46 MeV LEP machine energy uncertainty) and Γz0=2.588±0.137 GeV. We also determined Γinvisible=0.567±0.080 GeV, corresponding to 3.42±0.48 number of neutrino flavors. We also measured the muon pair cross section and determined the branching ratio Γμμ=Γh=0.056±0.006. The partial width of Z0→e0=- is Γee=88±9±7 MeV
Add to ORKG