# Measurement of the Effective Weak Mixing Angle by Jet-Charge Asymmetry in Hadronic Decays of the Z Boson

1 LAPP - Laboratoire d-Annecy-le-Vieux de Physique des Particules 2 IPNL - Institut de Physique Nucléaire de Lyon 3 CMS IPNL - Institut de Physique Nucléaire de Lyon

Abstract : The coupling of the Z boson to quarks is studied in a sample of about 3.5 million hadronic Z decays collected by the L3 experiment at LEP from 1991 to 1995. The forward-backward quark charge asymmet ry is measured by means of a jet charge technique. From the measured asymmetries, the effective weak mixing angle is determined to be \begin{center} \$\STE = 0.2327 \pm 0.0012\mbox{\emph{stat.}} \pm 0.0013\mbox{\emph{syst.}}

Author: M. Acciarri O. Adriani M. Aguilar-Benitez S. Ahlen J. Alcaraz G. Alemanni J. Allaby A. Aloisio M G. Alviggi G. Ambrosi H. Anderhu

Source: https://hal.archives-ouvertes.fr/