This report summarizes some of the recent HERA results obtained by studying
hard processes in ep-scattering. By resolving the structure of the proton, hard
ep-reactions provide information on the parton content of the proton and may
give insight into the dynamics of the exchanged parton cascade. In addition,
their study offers the possibility to test the Standard Model, in particular
perturbative Quantum Chromodynamics, on which the theoretical predictions on
ep-scattering cross sections are generally based. Any observed deviation
between the data and existing theoretical models would either indicate the need
to calculate higher order contributions or hint at signs of new physics.Comment: 15 pages, 8 figures, talk given at 23rd International Conference on
Physics in Collision (PIC 2003), Zeuthen, Germany, 26-28 Jun 200
