The line shape of the $Z$ boson

Abstract

At LEP~1, cross sections and cross section asymmetries may be analysed model independently. Cross sections depend on four, asymmetries on two free parameters. As an example, I discuss the model independent $Z$ boson mass determination from the $Z$ line shape and compare it to the Standard Model approach.

Comments: 7 pages (LaTeX), 1 figure (not included); a uuencoded file containing the LaTeX and all postscript files is available via anonymous ftp at ftp://ftp.ifh.de/pub/preprint/desy94-253.uu