NNLL resummation for stop pair-production at the LHC

The production of supersymmetric stop-antistop pairs at the large hadron collider (lhc) is studied including corrections from soft-gluon resummation up to next-to-next-to-leading logarithmic (nnll) accuracy in the mellin-space approach. additionally, corrections to the hard-matching coefficient at one-loop and coulomb contributions at two-loop order are considered. the nnll corrections enhance the cross section for all stop masses at centre-of-mass energies of 8 and 13 tev compared to the previously calculated predictions at next-to-leading logarithmic (nll) accuracy. furthermore, a slight increase in the dependence on the additional stop-mixing parameters is observed.