AdS black disk model for small-x DIS

Details AdS black disk model for small-x DIS AdS black disk model for small-x DIS

2010-01-07

arxiv.org/abs/1001.1157v2

Phys.Rev.Lett.105:072003,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages. Minor corrections

Scientific paper

10.1103/PhysRevLett.105.072003

Using the approximate conformal invariance of QCD at high energies we consider a simple AdS black disk model to describe saturation in DIS. Deep inside saturation the structure functions have the same power law scaling, F_T ~ F_L ~ 1/x^w, where w is related to the expansion rate of the black disk with energy. Furthermore, the ratio F_L /F_T is given by the universal value (1+w)/(3+w), independently of the target. For virtual photon-photon scattering at high energies we obtain explicit expressions and ratios for the total cross sections of transverse and longitudinal photons in terms of the single parameter w.

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