Neutralino/chargino pair production at NLO+NLL with resummation-improved PDFs for LHC Run II

Understand

We make use of recently released parton density functions (PDFs) with threshold-resummation improvement to consistently calculate theoretical predictions for neutralino and chargino pair production at next-to-leading order and next-to-leading logarithmic accuracy.

• The updated cross sections have been computed for experimentally relevant higgsino and gaugino search channels at the ongoing Run II of the LHC.
• A factorisation method is applied to exploit the smaller PDF uncertainty of the global PDF sets and to avoid complications arising in the refitting of threshold-resummation improved PDF replicas in Mellin space.
• The reduction of the scale uncertainty due to the resummation is, however, explicitly taken into account.