The production of forward jets has been measured in deep inelastic ep collisions at HERA. The results are presented in terms of single differential cross sections as a function of the Bjorken scaling variable (x_{ Bj}) and as triple differential cross sections d^3 \sigma / dx_{ Bj} dQ^2 dp_{ t,jet}^2, where Q^2 is the four momentum transfer squared and p_{ t,jet}^2 is the squared transverse momentum of the forward jet. Also cross sections for events with a di-jet system in addition to the forward jet are measured as a function of the rapidity separation between the forward jet and the two additional jets. The measurements are compared with next-to-leading order QCD calculations and with the predictions of various QCD-based models.
Categories: hep-ex