Next-to-leading order QCD corrections to top quark spin correlations at hadron colliders: the reactions $g g \to t {\bar t} (g)$ and $g q ({\bar q}) \to t {\bar t} q ({\bar q})$

摘要: We have computed the cross section for $t\bar t$ production by gluon-gluon fusion at next-to-leading order (NLO) in QCD coupling, keeping full dependence on spins. Furthermore we determined to same spin dependent sections processes $g + q ({\bar q})\to t {\bar t} q})$. Together with our previous results $q q} \to (g)$ these allow predictions, NLO QCD, of hadronic pairs a general configuration. As an application degree correlation $t$ and $\bar spins NLO, using various quantisation axes.