  The study of the inclusive production of a pair of charged light hadrons (a
"dihadron" system) featuring high transverse momenta and well separated in
rapidity represents a clear channel for the test of the BFKL dynamics at the
Large Hadron Collider (LHC). This process has much in common with the well
known Mueller-Navelet jet production; however, hadrons can be detected at much
smaller values of the transverse momentum than jets, thus allowing to explore
an additional kinematic range, supplementary to the one studied with
Mueller-Navelet jets. Furthermore, it makes it possible to constrain not only
the parton densities (PDFs) for the initial proton, but also the parton
fragmentation functions (FFs) describing the detected hadron in the final
state. Here, we present the first full NLA BFKL analysis for cross sections and
azimuthal angle correlations for dihadrons produced in the LHC kinematic
ranges. We make use of the Brodsky-Lapage-Mackenzie (BLM) optimization method
to set the values of the renormalization scale and study the effect of choosing
different values for the factorization scale. We also gauge the uncertainty
coming from the use of different PDF and FF parametrizations.
