  Several searches for new physics at the LHC require a fixed number of signal
jets, vetoing events with additional jets from QCD radiation. As the probed
scale of new physics gets much larger than the jet-veto scale, such jet vetoes
strongly impact the QCD perturbative series, causing nontrivial theoretical
uncertainties. We consider slepton pair production with 0 signal jets, for
which we perform the resummation of jet-veto logarithms and study its impact.
Currently, the experimental exclusion limits take the jet-veto cut into account
by extrapolating to the inclusive cross section using parton shower Monte
Carlos. Our results indicate that the associated theoretical uncertainties can
be large, and when taken into account have a sizeable impact already on present
exclusion limits. This is improved by performing the resummation to higher
order, which allows us to obtain accurate predictions even for high slepton
masses. For the interpretation of the experimental results to benefit from
improved theory predictions, it would be useful for the experimental analyses
to also provide limits on the unfolded visible 0-jet cross section.
