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

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

1997-10-14

arxiv.org/abs/hep-ph/9710358v4

Int.J.Mod.Phys. A14 (1999) 1261-1282

Physics

High Energy Physics

High Energy Physics - Phenomenology

Final version, to appear in Int. J. Mod. Phys. A

Scientific paper

10.1142/S0217751X99000646

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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