Structure functions in deep inelastic scattering from gauge/string duality beyond single-hadron final states

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We study deep inelastic scattering at large-'t Hooft coupling and finite x from gauge/string duality beyond single-hadron final states which gives the leading large-Nc contribution. Within the supergravity approximation, we calculate the subleading large-Nc contribution by introducing an extra hadron into the final states. We find the contribution from these double-hadron final states will dominate in the Bjorken limit q²→ ∞ compared with the single-hadron states. We discuss the implications of our results.