Azimuthal angular dependence of decay lepton in e+ e- --> t tbar

Abstract

We discuss top quark production and its subsequent decay for searching new physics at lepton colliders. The angular dependence of the decay leptons is calculated including both QCD corrections and anomalous gamma Z - t tbar couplings. The off-diagonal spin basis for the top and anti-top quarks is shown to be useful to probe the anomalous couplings.

12 pages, LaTeX, 9 ps figures

Cited by in corpus (4)

• Lepton distribution as a probe of new physics in production and decay of the t quark and its polarization
• Discriminating Top-Antitop Resonances using Azimuthal Decay Correlations
• Top-quark spin correlation at Linear Colliders with anomalous couplings
• QCD corrections to decay-lepton polar and azimuthal angular distributions in e+e- -> t tbar in the soft-gluon approximation