DOI 10.1007/s100520000392
Cross-sections and leptonic forward-backward asymmetries from the Z0 running of LEP
The DELPHI Collaboration
P.Abreu21 - et al.
21 LIP, IST, FCUL - Av. Elias Garcia, 14-1o,
1000 Lisboa Codex, Portugal
Received: 4 February 2000 / Revised version: 7 March 2000 / Published online: 8 June 2000 - © Springer-Verlag 2000
Abstract
During 1993 and 1995 LEP was run at 3 energies near the Z0 peak in
order to give
improved measurements of the mass and width of the resonance. During 1994,
LEP operated only at
the Z0 peak. In total DELPHI accumulated
data corresponding to an integrated luminosity of approximately
116 pb-1. Analyses of
the hadronic cross-sections and of the cross-sections and
forward-backward
asymmetries in the leptonic channels used the most precise
evaluations of the LEP energies. In the dimuon channel, events with a
photon radiated from the initial
state have been used to probe the cross-sections and
asymmetries down to PETRA energies.
Model independent fits to all
DELPHI lineshape and asymmetry data from 1990 to 1995
have been carried out giving values of
the resonance parameters:
These values are significantly more precise than those previously published. The results are interpreted in terms of the Standard Model.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
