  Semi-inclusive deep inelastic scattering off nuclei is a unique process to
study the parton propagation mechanism and its modification induced by the
presence of the nuclear medium. It allows us to probe the medium properties,
particularly the cold nuclear matter transport coefficient, which can be
directly linked to the nuclear gluon density. We present here a model for
hadron production in deep inelastic lepton-nucleus scattering, which takes into
account the hadronic transverse momentum of final state particles via
transverse-momentum dependent (TMD) parton distributions and fragmentation
functions. We implement parton energy loss and hadronic absorption with a
geometrical model of the nucleus. The model is compared with the nuclear SIDIS
multiplicity ratios and transverse-momentum broadening data from the CLAS,
HERMES, and EMC collaborations, aiming for a simultaneous description of these
data sets. We obtain a good agreement over the various nuclear targets and the
wide kinematical range of those experiments. We best describe the data with a
transport coefficient \hat{q} = 0.3 GeV/fm^2, and we highlight the importance
and the role of correlations in extracting this quantity.
