DIS dijet production at next-to-eikonal accuracy in the CGC

We compute dijet production in Deep Inelastic Scattering at low $x$ the dipole formalism next-to-eikonal accuracy. calculate contributions induced by single photon exchange of either longitudinal or transverse polarization. include all types corrections to eikonal approximation gluon background field: (i) finite width target, (ii) interaction quark-antiquark pair with subleading (transverse) component field and (iii) dynamics target which is encoded $z^-$-coordinate dependence field. The final expressions for cross section are written as sum a "generalized eikonal" contribution (where momentum $p^+$ between incoming allowed since average $z^-$ kept) explicit that involve decorated quadrupole operators.