  Within the framework of the generalized QCD factorization formalism, we
perform the first global analysis of the jet transport coefficient ($\hat q$)
for cold nuclear matter. The analysis takes into account the world data on
transverse momentum broadening in semi-inclusive electron-nucleus deep
inelastic scattering, Drell-Yan dilepton and heavy quarkonium production in
proton-nucleus collisions, as well as the nuclear modification of the structure
functions in deep inelastic scattering, comprising a total of 215 data points
from 8 data sets. For the first time, we clarify quantitatively the
universality and probing scale dependence of the nuclear medium property as
encoded in $\hat q$. We expect that the determined parametrization of $\hat q$
in cold nuclear matter will have significant impact on precise identification
of the transport property of hot dense medium created in heavy ion collisions.
