Diffractive dijet production in impact parameter dependent saturation models

We study coherent diffractive dijet production in electron-hadron and electron-nucleus collisions within the dipole picture. We provide semianalytic results for the differential cross section and elliptic anisotropy in the angle between dijet transverse momentum and hadron recoil momentum. We demonstrate the direct relation between angular moments of the dipole amplitude in coordinate space and angular moments of the diffractive dijet cross sections. To perform explicit calculations, we employ two different saturation models, extended to include the target geometry. In the limit of large photon virtuality or quark masses, we find fully analytic results that allow direct insight into how the differential cross section and elliptic anisotropy depend on the saturation scale, target geometry, and kinematic variables. We further provide numerical results for more general kinematics in collisions at a future electron-ion collider, and study the effects of approaching the saturated regime on diffractive dijet observables.

Note:

22 pages, 18 figures, typos corrected, figures updated to match published version

Strong Interactions
diffraction
dijet: production
impact parameter: dependence
dijet: transverse momentum
hadron: recoil
dipole
kinematics
deep inelastic scattering
electron hadron: interaction

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