Description
High-energy (or small-$x$) logarithms are enhanced in proton scattering processes when the collider centre-of-mass energy is much larger than the hard scattering scale. In the picture of collinear factorisation, their resummation affects QCD cross-sections and DGLAP evolution kernels. In recent years, it was shown that small-$x$ resummed theory can be used to improve predictions for Parton Distribution Function (PDF) fitting as well as parton level cross-section studied at the LHC (namely single-Higgs and heavy-quark pair production). Thus, in this talk, I will review recent results obtained with the small-$x$ improved collinear factorisation as well as illustrate ongoing research.
Author
Federico Silvetti