  If supersymmetry near the TeV scale is realized in Nature, the pair
production of scalar top squarks is expected to be observable at the Large
Hadron Collider. Recently, effective field-theory methods were employed to
obtain approximate predictions for the cross section for this process, which
include soft-gluon emission effects up to next-to-next-to-leading order (NNLO)
in perturbation theory. In this work we employ the same techniques to resum
soft-gluon emission effects to all orders in perturbation theory and with
next-to-next-to-logarithmic (NNLL) accuracy. We analyze the effects of NNLL
resummation on the stop-pair production cross section by obtaining NLO+NNLL
predictions in pair invariant mass and one-particle inclusive kinematics. We
compare the results of these calculations to the approximate NNLO predictions
for the cross sections.
