https://doi.org/10.1140/epjc/s2005-02164-6
theoretical physics
Corrections to quark asymmetries at LEP
1
Fermi National Accelerator Laboratory, IL 60510-500, Batavia, USA
2
Deutsches Elektronen-Synchrotron DESY, Platanenallee 6, 15738, Zeuthen, Germany
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
The most precise measurement of the weak mixing angle 
at LEP is from the forward-backward asymmetry 
at the Z-pole. In this note the QED and electroweak radiative corrections to obtain the pole asymmetry from the measured asymmetry for b- and c-quarks have been calculated using ZFITTER, which has been amended to allow a consistent treatment of partial two-loop corrections for the b-quark final asymmetries. A total correction of 
and 
has been found, where the remaining theoretical uncertainty is much too small to explain the apparent discrepancy between obtained from A
FB
b
and from the left-right asymmetry at SLD.
© Springer-Verlag, 2005
