2020 Impact factor 4.590
Particles and Fields
Eur. Phys. J. C 4, 185-191
DOI 10.1007/s100529800890

QCD corrections to the forward-backward asymmetries of c and b quarks at the Z pole

D. Abbaneo1 - P. Antilogus2 - T. Behnke1 - S.C. Blyth3 - M. Elsing1 - R. Faccini4 - R.W.L. Jones5 - K. Mönig1 - S. Petzold6 - R. Tenchini7

1 CERN, CH-1211, Geneva 23, Switzerland
2 Université Claude Bernard de Lyon, IPNL, IN2P3-CNRS, F-69622 Villeurbanne Cedex, France
3 Carnegie Mellon University, Pittsburgh, PA 15213, USA
4 INFN Sezione di Roma and University of Rome ``La Sapienza'', I-00185 Rome, Italy
5 Department of Physics, University of Lancaster, Lancaster LA1 4YB, UK
6 Universität Hamburg/DESY, II Institut für Experimental Physik, Notkestrasse 85, D-22607 Hamburg, Germany
7 INFN Sezione di Pisa, I-56010 Pisa, Italy

Received: 26 February 1998 / Published online: 2 June 1998

Abstract
Measurements of the forward-backward production asymmetry of heavy quarks in Z decays provide a precise determination of $\sin^2\!\theta_{\rm{W,eff}}^{\rm {lept}}$. The asymmetries are sensitive to QCD effects, in particular hard gluon radiation. In this paper QCD corrections for $A_{\mathrm{FB}}^{{b\bar{b}}}$  and $A_{\mathrm{FB}}^{{c\bar{c}}}$  are discussed. The interplay between the experimental techniques used to measure the asymmetries and the QCD effects is investigated using simulated events. A procedure to estimate the correction needed for experimental measurements is proposed, and some specific examples are given.


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