Abstract

We compute the differential and total rate of the semileptonic decay of polarized top quarks \(t\rightarrow \ell \nu _\ell + b~\mathrm{jet} + \mathrm{jet}\) at next-to-leading order (NLO) in the QCD coupling with an off-shell intermediate \(W\) boson. We present several normalized distributions, in particular those that reflect the \(t\)-spin analyzing powers of the lepton, the b-jet and the \(W^+\) boson at LO and NLO QCD.

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