  The Parton Branching (PB) method describes the evolution of transverse
momentum dependent (TMD) parton distributions, covering all kinematic regions
from small to large transverse momenta kT. The small kT-region is very
sensitive both to the contribution of the intrinsic motion of partons
(intrinsic kT) and to the resummation of soft gluons taken into account by the
PB TMD evolution equations. We study the role of soft-gluon emissions in TMD as
well as integrated parton distributions. We perform a detailed investigation of
the PB TMD methodology at next-to-leading order (NLO) in Drell-Yan (DY)
production for low transverse momenta. We present the extraction of the
nonperturbative "intrinsic-kT" distribution from recent measurements of DY
transverse momentum distributions at the LHC across a wide range in DY masses,
including a detailed treatment of statistical, correlated and uncorrelated
uncertainties. We comment on the (in)dependence of intrinsic transverse
momentum on DY mass and center-of-mass energy, and on the comparison with other
approaches.
