Searches for Low-Mass Dijet Resonances in Trijet Final States using Monte Carlo Samples
This thesis presents the prototype of a search for new phenomena that decay in two jets, in presence of an associated jet (three-jet or trijet final state). Mass combination studies are carried out to reconstruct dijet resonances in different mass regions. The two models of interest are the composite quark, which contains a composite quark resonance Q, and the simplified dark matter mediator mod