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

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

Automated summary

In this study, we calculate dijet production in deep inelastic scattering at low x using the dipole formalism at next-to-eikonal accuracy. We consider the contributions induced by single photon exchange of longitudinal or transverse polarization. Various corrections to the eikonal approximation in the gluon background field are included, such as the finite longitudinal width of the target, interaction with the subleading component of the background field, and the dynamics of the target encoded in the z-coordinate dependence of the background field. The final expressions for the dijet cross section consist of a generalized eikonal contribution and explicit next-to-eikonal corrections involving decorated dipole and quadrupole operators.