  A study of the production of Mueller-Navelet jets at 13 TeV LHC is presented,
including BFKL resummation effects and investigating three different variants
of the BLM scale optimization method. It is shown how the cross section and the
azimuthal observables are affected by the exclusion of the events where, for a
given rapidity interval between the two jets, one of these is produced in the
central region.
