  The Mueller-Navelet di-jet production process represents an ultimate
testfield of pQCD in the high-energy limit. Several experimental analyses
carried out so far are in good agreement with theoretical predictions, based on
collinear factorization and BFKL resummation of energy logarithms in the
next-to-leading approximation, with the CMS experimental data at center-of-mass
energy equal to 7 TeV. However, the question if the same data can be described
also by fixed-order perturbative approaches has not yet been fully answered. We
discuss how the use of partially asymmetric cuts in the transverse momenta of
the detected jets allows to discriminate between BFKL-resummed and fixed-order
predictions (the latter in the high-energy limit) in observables related with
this process at LHC.
