Pd. Acton et al., PRECISION-MEASUREMENTS OF THE NEUTRAL CURRENT FROM HADRON AND LEPTON PRODUCTION AT LEP, Zeitschrift fur Physik. C, Particles and fields, 58(2), 1993, pp. 219-237
New measurements of the hadronic and leptonic cross sections and of th
e leptonic forward-backward asymmetries in e+e- collisions are present
ed. The analysis includes data recorded up to the end of 1991 by the O
PAL experiment at LEP, with centre-of-mass energies within +/- 3 GeV o
f the Z0 mass. The results are based on a recorded total of 454 000 ha
dronic and 58 000 leptonic events. A model independent analysis of Z0
parameters based on an extension of the improved Born approximation is
presented leading to tests of lepton universality and an interpretati
on of the results within the Standard Model framework. The determinati
on of the mass and width of the Z0 benefit from an improved understand
ing of the LEP energy calibration.