2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 9, 221-228
DOI 10.1007/s100529900062

Axial contributions at the top threshold

J.H. Kühn1 - T. Teubner2

1 Institut für Theoretische Teilchenphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany
2 Deutsches Elektronen-Synchrotron DESY, D-22603 Hamburg, Germany

Received: 11 March 1999 / Published online: 20 May 1999

Abstract
We calculate the contributions of the axial current to top quark pair production in e+ e- annihilation at threshold. The QCD dynamics is taken into account by solving the Lippmann-Schwinger equation for the P wave production using the QCD potential up to two loops. We demonstrate that the dependence of the total and differential cross section on the polarization of the e+ and e- beams allows for an independent extraction of the axial current induced cross section.


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