Study of the Z Boson at LEP
Abstract
Description
The Z line shape is measured at LEP 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 different model-independent approaches in order to extract quantities like mass and width of the Z boson. If a fit deviates from that in the standard approach, this may give hints for New Physics contributions. I describe two model-independent approaches and compare their applications to LEP data with the Standard Model approach.
10 pages, Latex, 1 figure, 2 tables, Invited talk held on occasion of the 25th anniversary of the Bishop Konstantin Preslavsky University of Shoumen, Bulgaria (Scientific Conference of the Theoretical Section of the Faculty of Physics, 31 Oct. 1996). Extended version: DESY 97-218
10 pages, Latex, 1 figure, 2 tables, Invited talk held on occasion of the 25th anniversary of the Bishop Konstantin Preslavsky University of Shoumen, Bulgaria (Scientific Conference of the Theoretical Section of the Faculty of Physics, 31 Oct. 1996). Extended version: DESY 97-218