engleski

Survey of top quark polarization at a polarized linear e+e− collider

We discuss in detail top quark polarization in above-threshold (t¯t) production at a polarized linear e+e− collider. We pay particular attention to the minimization and maximization of the polarization of the top quark by tuning the longitudinal polarization of the e+ and e− beams. The polarization of the top quark is calculated in full next-to-leading order QCD. We also discuss the beam polarization dependence of the longitudinal spin-spin correlations of the top and antitop quark spins.

linear colliders ; top-quark physics

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