2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37048The results of complementary tests of perturbative QCD in DIS at large centre-of-mass energies at HERA are presented. The analysis of event shape variables allows for the investigation of approaches to understand aspects of non-perturbative QCD such as the formation of the hadronic final state. The strong coupling constant, $α_s$, is extracted from both inclusive jet cross sections and dijet rates and is found to be competitive with the world average.Proceedings for the 'XXXVth Rencontres de Moriond - QCD and High Energy Hadronic Interactions'High Energy Physics - Experimenttext