  New data on the tensor analyzing power Ayy of the ^9Be(d,p)X reaction at an
initial deuteron momentum of 5 GeV/c and secondary particles (protons and
deuterons) detection angle of 178 mr have been obtained at the JINR
Synchrophasotron.
  The proton data obtained are analyzed within the framework of an approach
based on the light-front dynamics using Karmanov's relativistic deuteron wave
function. Contrary to the calculations with standard non-relativistic deuteron
wave functions, we have managed to explain the new data within the framework of
our approach without invoking degrees of freedom additional to nucleon ones.
  The ^9Be(d,d)X data are obtained in the vicinity of the excitation of
baryonic resonances with masses up to 1.8 GeV/c^2. The Ayy data are in a good
agreement with the previous data obtained at 4.5 and 5.5 GeV/c when they are
plotted versus $t$. The results of the experiment are compared with the
predictions of the plane wave impulse approximation and \omega-meson exchange
models.
