Saturation and geometrical scaling in small systems

Abstract

Saturation and geometrical scaling (GS) of gluon distributions are a consequence of the non-linear evolution equations of QCD. We argue that in pp GS holds for the inelastic cross-section rather than for the multiplicity distributions. We also discuss possible fluctuations of the proton saturation scale in pA collisions at the LHC.

Comments: 6 pages, 4 figures, talk presented at Excited QCD, Costa da Caparica, Portugal, March 6-12, 2016