Dijet Angular Distributions in Proton Proton Collisions : At √s = 7 TeV and √s = 14 TeV This thesis is based on the first data from the Large Hadron Collider (LHC) at CERN. Its theme can be described as the classical Rutherford scattering experiment adapted to the LHC: measurement of scattering angles to search for new physics and substructure. At the LHC colliding quarks and gluons exit the proton collisions as collimated particle showers or jets. The thesis presents studies of the scattering angles of these jets. It includes a phenomenological study at the LHC design energy of 14 TeV where a model of so called large extra dimensions is used as a benchmark process for the sen