Associated production of the $Z$ boson with a pair of top quarks in the left-right twin Higgs model

Understand

In the context of the left-right twin Higgs (LRTH) model, we first examine the effects on the $Zt\bar t$ production at the ILC and LHC.

• Our results show that the cross-sections can be significantly deviated from the standard model predictions and thus provide a good probe for the LRTH model.
• We also estimate the new production channel, $Zt\bar T $ or $Z\bar t T $ production, at the LHC.
• Compared with $Zt \bar t$ production, we find that the $Z t \bar T$ production can have a sizable production rate when the scale $f$ is not too high.