  Measurements of the suppression and correlations of dijets is performed using
3 $\mu$b$^{-1}$ of Xe+Xe data at $\sqrt{s_{\mathrm{NN}}} = 5.44$ TeV collected
with the ATLAS detector at the LHC. Dijets with jets reconstructed using the
$R=0.4$ anti-$k_t$ algorithm are measured differentially in jet $p_{\text{T}}$
over the range of 32 GeV to 398 GeV and the centrality of the collisions.
Significant dijet momentum imbalance is found in the most central Xe+Xe
collisions, which decreases in more peripheral collisions. Results from the
measurement of per-pair normalized and absolutely normalized dijet
$p_{\text{T}}$ balance are compared with previous Pb+Pb measurements at
$\sqrt{s_{\mathrm{NN}}} =5.02$ TeV. The differences between the dijet
suppression in Xe+Xe and Pb+Pb are further quantified by the ratio of pair
nuclear-modification factors. The results are found to be consistent with those
measured in Pb+Pb data when compared in classes of the same event activity and
when taking into account the difference between the center-of-mass energies of
the initial parton scattering process in Xe+Xe and Pb+Pb collisions. These
results should provide input for a better understanding of the role of energy
density, system size, path length, and fluctuations in the parton energy loss.
