  Gluons at small x in high-energy nuclei overlap in the longitudinal
direction, so the nucleus acts as a single source of gluons, like higher Fock
components in a single nucleon, which contribute to inelastic collisions with a
high multiplicity of produced hadrons. This similarity helps to make a link
between nuclear effects in pA and high-multiplicity pp collisions. Such a
relation is well confirmed by data for the J/Psi production rate in
high-multiplicity pp events measured recently in the ALICE experiment.
Broadening of J/Psi transverse momentum is predicted for high-multiplicity pp
collisions.
