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

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-$N_c$ contribution. Within the supergravity approximation, we calculate the subleading large-$N_c$ contribution by introducing an extra hadron into the final states. We find that the contribution from these double-hadron final states will dominate in the Bjorken limit $q^2\to \infty$ compared with the single-hadron states. We discuss the implications of our results.

Figure 1

Leading large-$N_c$ contribution from the single-hadron final states.

Figure 2

$s$-channel contribution from the double-hadron final states.

Figure 3

$t$-channel contribution from the double-hadron final states.

Figure 4

$u$-channel contribution from the double-hadron final states.