  The Regge inspired k_T-factorization scheme expresses the scattering
amplitude for exclusive leptoproduction of a light vector meson rho in terms of
two impact factors, one for the gamma* - rho transition and the other one for
the nucleon to nucleon transition, with, at leading order, a two "reggeized"
gluon exchange in the t-channel. We report here on a recent phenomenological
study where we apply a previously developped scheme which consistently takes
into account the twist 3 distribution amplitudes for transversely polarized rho
meson. The computation of the gamma* to rho impact factor are performed within
collinear factorization of QCD, up to the twist 3 level, based on the Collinear
Factorization scheme applied to the amplitudes gamma*g to g rho .
  Our results are in good agreement with high energy experimental data for the
ratios of helicity amplitudes.
