Castillo Giménez, María Victoria
Cases Ruiz, Ramón
Chrin, J. T. M.
Cortina Gil, Eduardo
Fez Laso, M. D. M. de
Ferrer Soria, Antonio
Fuster Verdú, Juan A.
García García, Carmen
Gómez Cadenas, Juan José
Higón Rodríguez, Emilio
Hernández Rey, Juan José
Hernando Morata, José Ángel
Lacasta Llácer, Carlos
Lozano Bahilo, José Julio
Martínez Vidal, Fernando
Martí García, Salvador
Salt Cairols, José
Valls Ferrer, Juan Antonio
Zúñiga Román, Juan
During the 1992 running period of the LEP e+e- collider, the DELPHI experiment accumulated approximately 24 pb-1 of data at the Z0 peak. The decays into hadrons and charged leptons have been analysed to give values for the cross sections and leptonic forward-backward asymmetries which are significantly improved with respect to those previously published by the DELPHI collaboration. Incorporating these new data, more precise values for the Z0 resonance parameters are obtained from model-independent fits. The results are interpreted within the framework of the Standard Model, yielding for the top quark mass m(t) = 157(-48)+36(expt.)-20(+19)(Higgs) GeV, and for the effective mixing angle sin2 theta(eff)lept = 0.2328 +/- 0.0013 (expt.)-0.0003(+0.0001)(Higgs), where (Higgs) represents the variation due to Higgs boson mass in the range 60 to 1000 GeV, with central value 300 GeV.
