We discuss the special situation for decays of the top quark that occurs when $m_t$≊$M_W$+$m_b$ and how it affects exclusive channels Γ(t→b+W)/Γ(t→s+W) and the relative proportion of longitudinally and transversely polarized W ’s in t decay.

• Received 12 January 1988

DOI:https://doi.org/10.1103/PhysRevD.37.2676