  We present threshold enhanced QCD corrections to rapidity distributions of
di-leptons in the Drell-Yan process and of Higgs particles in both gluon fusion
and bottom quark annihilation processes using Sudakov resummed cross sections.
We have used renormalisation group invariance and the mass factorisation
theorem that these hard scattering cross sections satisfy as well as Sudakov
resummation of QCD amplitudes. We find that these higher order threshold QCD
corrections stabilise the theoretical predictions under scale variations.
