Fully analytical O(α s ) results for on-shell and off-shell polarized W-boson decays into massive quark pairsS. Groote, J. G. Körner and P. TuvikeEur. Phys. J. C, 73 5 (2013) 2454DOI: https://doi.org/10.1140/epjc/s10052-013-2454-2