Axial contributions at the top threshold

  • J.H. Kühn
  • T. Teubner
Theoretical physics


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.


Total Cross Section Momentum Distribution Vector Contribution Wave Contribution Excitation Curve 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • J.H. Kühn
    • 1
  • T. Teubner
    • 2
  1. 1.Institut für Theoretische TeilchenphysikUniversität KarlsruheKarlsruheGermany
  2. 2.Deutsches Elektronen-Synchrotron DESYHamburgGermany

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