Top-Quark Decay at Next-to-Next-to-Next-to-Leading Order in QCD

Long Chen, Xiang Chen, Xin Guan +1

We present the first complete high-precision QCD corrections to the inclusive decay width ${\mathrm{\Gamma }}_t$, the $W$-helicity fractions $f_{\mathrm{L},\mathrm{R},0}$ and semi-inclusive distribut…