| Summary: | We review the recent ALICE data on charged particle multiplicity in p–p collisions, and show that it exhibits Geometrical Scaling (GS) with energy dependence given with characteristic exponent λ=0.22. Next, starting from the GS hypothesis and using results of the Color Glass Condensate effective theory, we calculate 〈pT〉 as a function Nch including dependence on the scattering energy W. We show that 〈pT〉 both in p–p and p–Pb collisions scales in terms of scaling variable (W/W0)λ/(2+λ)Nch/S⊥ where S⊥ is multiplicity-dependent interaction area in the transverse plane. Furthermore, we discuss how the behavior of the interaction radius R at large multiplicities affects the mean pT dependence on Nch, and make a prediction that 〈pT〉 at high multiplicity should reach an energy-independent limit.
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