Abstract
We present a new transverse momentum dependent (unintegrated) gluon distribution function in proton. Parameters of this distribution at low \(Q^{2}\) were obtained from a fit on soft hadron production data taken at LHC and \(F_{2}(x,Q^{2})\) and reduced cross section data from HERA. Some parameters were determined from a fit on HERA and LHC data at larger \(Q^{2}\) , such as heavy flavor jet, Higgs boson and prompt photon production. Then we extend our consideration to nuclei using the property of geometrical scaling. We show that one can describe the shadowing effect at low \(x\) using our nuclear gluon density within the color dipole approach.
