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Saturation and geometrical scaling

Research paper by Michal Praszalowicz

Indexed on: 08 Nov '16Published on: 08 Nov '16Published in: arXiv - High Energy Physics - Phenomenology



Abstract

We discuss emergence of geometrical scaling as a consequence of the nonlinear evolution equations of QCD, which generate a new dynamical scale, known as the saturation momentum: Qs. In the kinematical region where no other energy scales exist, particle spectra exhibit geometrical scaling (GS), i.e. they depend on the ratio pT=Qs, and the energy dependence enters solely through the energy dependence of the saturation momentum. We confront the hypothesis of GS in different systems with experimental data.