Progress in the Understanding of Dijet Production in DIS

Recent results on dijet production in deep-inelastic scattering from the H1 experiment at the ep-collider HERA are presented. Internal jet structure has been studied in terms of jet shapes and subjet multiplicities in the Breit frame. Both observables are seen to be well described by QCD models. We observe a broadening of the jets towards the proton direction and at lower transverse jet energies. Dijet rates and dijet cross sections have been measured over a wide range of four momentum transfers (5 < Q 2 < 5000 GeV 2) and transverse jet energies (25 < E 2 t;Breit. 1200 GeV 2) with diierent jet algorithms. Perturbative QCD calculations in next-to-leading order in the strong coupling constant give a good description of the data.