  Novel PDFs taking into account resummation-improved matrix elements, albeit
only in the fit of a reduced data set, allow for consistent NLO+NLL
calculations of slepton pair production at the LHC. We apply a factorisation
method to this process that minimises the effect of the data set reduction,
avoids the problem of outlier replicas in the NNPDF method for PDF
uncertainties and preserves the reduction of the scale uncertainty. For Run II
of the LHC, left-handed selectron/smuon, right-handed and maximally mixed stau
production, we confirm that the consistent use of threshold-improved PDFs
partially compensates the resummation contributions in the matrix elements.
Together with the reduction of the scale uncertainty at NLO+NLL, the described
method further increases the reliability of slepton pair production cross
sections at the LHC.
