Gluon distribution in proton at soft and hard pp collisions
  We analyze the inclusive spectra of hadrons produced in $pp$ collisions at high energies in the mid-rapidity region within the soft QCD and perturbative QCD assuming the possible creation of the soft gluons at low intrinsic transverse momenta $k_t$. From the best description of the LHC data we found the parametrization of the unintegrated gluon distribution which at low $k_t$ is different from the one obtained within the perturbative QCD. 
G.I.Lykasov, V.A.Bednyakov, A.A.Grinyuk, M.Poghosyan and A.G.Dolbilov
hep-ph