Measurement of the Z 0 mass and width with the opal detector at LEP
Abstract
We report an experimental determination of the cross section for e +e - → hadrons from a scan around the Z 0 pole. On the basis of 4350 hadronic events collected over seven energy points between 89.26 GeV and 93.26 GeV we obtain a mass of mz=91.01±0.05±0.05 GeV, and a total decay width of Γz=2.60±0.13 GeV. In the context of the standard model t these results imply 3.1 ± 0.4 neutrino generations.
- Publication:
-
Physics Letters B
- Pub Date:
- November 1989
- DOI:
- 10.1016/0370-2693(89)90705-3
- Bibcode:
- 1989PhLB..231..530A