  Continuing with our analysis of parton distributions in the nucleon, we
extend our light-front quark model in order to obtain both the helicity
independent and helicity dependent parton distributions, analytically matching
the results of global fits at the initial scale $\mu \sim 1$ GeV, and which
also contain the correct Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution.
We also calculate the transverse parton, Wigner and Husimi distributions from a
unified point of view, using our light-front wave functions and expressing them
in terms of the parton distributions $q_v(x)$ and $\delta q_v(x)$. Our results
are very relevant for the current and future program of the COMPASS experiment
at SPS (CERN).
