Deep Inelastic Scattering from Holographic Spin-One Hadrons

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We study deep inelastic scattering structure functions from hadrons using different holographic dual models which describe the strongly coupled regime of gauge theories in the large N limit. Particularly, we consider scalar and vector mesons obtained from holographic descriptions with fundamental degrees of freedom, corresponding to N=2 supersymmetric and non-supersymmetric Yang-Mills theories. We explicitly obtain analytic expressions for the full set of eight structure functions, i.e., F₁, F₂, g₁, g₂, b₁, b₂, b₃, b₄, arising from the standard decomposition of the hadronic tensor of spin-one hadrons. We obtain the relations 2 F₁ = F₂ and 2 b₁ = b₂. In addition, we find b₁ O(F₁) as suggested by Hoodbhoy, Jaffe and Manohar for vector mesons. Also, we find new relations among some of these structure functions.