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The European Physical Journal C
ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)
Abstract Volume 4 Issue 2 (1998) pp 185-191
DOI 10.1007/s100529800890
experimental physics:
QCD corrections to the forward-backward asymmetries of c and b quarks at the Z pole
D. Abbaneo (1), P. Antilogus (2), T. Behnke (1), S.C. Blyth (3), M. Elsing (1), R. Faccini (4), R.W.L. Jones (5), K. Mönig (1), S. Petzold (6), R. Tenchini (7)
(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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Online publication: June 23, 1998
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