Threshold behaviour of top production in e+e− annihilation |
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| Authors: | S Güsken JH Kühn PM Zerwas |
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| Institution: | Institut für Theoretische Physik, RWTH Aachen, Aachen, Fed. Rep. Germany;CERN, Geneva, Switzerland;SLAC, Stanford University, Stanford, CA, USA |
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| Abstract: | Implications of electroweak interactions on the threshold behaviour of top production are analyzed. Weak decays of densely spaced high radial excitations of toponium lead to a form of the cross section below threshold that is difficult to distinguish from continuum production. We study the contribution of the vector and axial-vector current to the continuum and calculate the rate for Z decays into top particles as a function of the top quark mass, including QCD corrections. |
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