Energy Spectrum of Secondary Leptons in $e^+ e^- \to t\bar{t}$ - Non-standard Interactions and CP Violation -

Details Energy Spectrum of Secondary Leptons in $e^+ e^- \to t\bar{t}$ - Non-standard Interactions and CP Violation - Energy Spectrum of Secondary Leptons in $e^+ e^- \to t\bar{t}$ - Non-standard Interactions and CP Violation -

1996-04-12

arxiv.org/abs/hep-ph/9604301v4

Nucl.Phys. B484 (1997) 17-32

Physics

High Energy Physics

High Energy Physics - Phenomenology

Final version (to appear in Nucl.Phys.B)

Scientific paper

10.1016/S0550-3213(96)00602-5

The process of top-quark pair production at future high-energy $e^+ e^-$ linear colliders has been investigated as a possible test of physics beyond the Standard Model. Non-standard interactions have been assumed both for the production and for the subsequent decay of the top quarks. The energy spectrum of the single lepton $l^\pm$ and the energy correlation of $l^+$ and $l^-$ emerging from the process $e^+e^-\to t\bar{t}\to l^\pm X/l^+l^-X$ are calculated. The energy- spectrum asymmetry of $l^+$ and $l^-$ is considered as a measure of CP violation. An optimal method to determine whether CP violation occurs in the production or in the decay processes is proposed.

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