Measurement of the mass and width of the $Z^0$ boson at the Fermilab Tevatron

An analysis of $Z^0$→$e^{+}$$e^{\mathrm{-}}$ and $Z^0$→${\mu }^{+}$${\mu }^{\mathrm{-}}$ data from the Collider Detector at Fermilab in p¯p collisions at √s =1.8 TeV yields a mass of the $Z^0$ boson of $M_Z$=90.9±0.3 (stat+syst)±0.2 (scale) GeV/$c^2$ and a width of ${\Gamma }_z$=3.8±0.8±1.0 GeV.