On AdS/QCD correspondence and the partonic picture of deep inelastic scattering
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We critically examine the question of scaling of the Deep Inelastic
Scattering process in the medium Bjorken x region on a scalar boson in the framework of the AdS/QCD correspondence. To get the right polarization structure of the forward electroproduction amplitude, we show that one needs to add (at least) the scalar to scalar and scalar to vector hadronic amplitudes. This illustrates how the partonic picture may emerge from a simple scenario based on the AdS/QCD correspondence, provided one allows the conformal dimension of the hadronic field to equal 1 and use the concept of "hadron - parton duality" .
Second version with a few added clarifications and references. Third version with a misprint corrected in Eq. 35 and following unnumbered equation; to appear in Physics Letters B
Second version with a few added clarifications and references. Third version with a misprint corrected in Eq. 35 and following unnumbered equation; to appear in Physics Letters B