Effects of Non-Standard Interactions for the Energy Spectrum of Secondary Leptons in e^+e^- --> t t-bar

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  • 15 October 1997
Abstract
The process of top-quark pair production followed by semileptonic decays at future high-energy e^+e^- linear colliders is investigated as a possible test of physics beyond the Standard Model. Assuming the most general non-standard forms for gamma t t-bar, Z t t-bar and Wtb couplings, the energy spectrum of the single lepton l^{+-} and the energy correlation of l^+ and l^- emerging from the process e^+e^- --> t t-bar --> l^{+-} ... /l^+l^- ... are calculated. Expected precision of the non-standard-parameter determination is estimated adopting the recently-proposed optimal method.

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