The Z Boson Resonance Parameters

Abstract

The Z line shape is measured at LEP/CERN with an accuracy at the per mille level. Usually it is described in the Standard Model of electroweak interactions with account of quantum corrections. Alternatively, one may attempt an S-matrix based model-independent approach in order to extract quantities like mass and width of the Z boson. I describe the formalism and its application to data.

Comments: 21 pages, LaTex, 4 figures, 2 tables; uses epsfig, epsf, amstext; version published in LNP 504 (1998) 157