Top-Charm Associated Production at High Energy e+e- Colliders in Standard Model
Abstract
The flavor changing neutral current tcV (V=γ,Z) couplings in the production vertex for the process e+e- t c or 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 × 10-9 fb at s =200 GeV and 0.572 × 10-9 fb at s =500 GeV respectively. The result is much smaller than that given in ref. clwy by a factor of 10-5.
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