Top-Charm Associated Production at High Energy e^+e^- Colliders in Standard Model

Details Top-Charm Associated Production at High Energy e^+e^- Colliders in Standard Model Top-Charm Associated Production at High Energy e^+e^- Colliders in Standard Model

1999-01-21

arxiv.org/abs/hep-ph/9901369v1

Phys.Lett. B452 (1999) 143-149

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages including 1 ps figure and 2 eps figures

Scientific paper

10.1016/S0370-2693(99)00276-2

The flavor changing neutral current tcV (V=\gamma,Z) couplings in the production vertex for the process $e^+e^-\to t\bar c$ or $\bar t c$ in the standard model are investigated. The precise calculations keeping all quark masses non-zero are carried out. The total production cross section is found to be $1.84 \times 10^{-9}$ fb at $\sqrt s =200 GeV$ and $0.572 \times 10^{-9}$ fb at $\sqrt s =500 GeV$ respectively. The result is much smaller than that given in ref. \cite{clwy} by a factor of $10^{-5}$.

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