D-tagged jet measurements in the ALICE experiment

Abstract

With the ALICE detector at CERN, scientists are studying the matter of the early universe in the laboratory. Nuclei are smashed onto each other, creating a new state of matter, called the quarkgluon plasma. The hot fireball that is created expands and cools down creating many particles that come in conical shapes called jets. ALICE measures these particles in order to study the quark-gluon plasma. One of these particles is the D-meson carrying information about the quarkgluon plasma transport properties. These jets contain many other particles than the D-mesons. Good simulation models have to be created in order to compare with the distorted data. In this thesis, proton-lead collisions at √sNN = 5.02 TeV are studied, which provide a reference for the lead-lead analysis, in which the quark-gluon plasma is created. A model will be set up, which can be compared with data coming from ALICE. Modifications are applied on the model and the systematic uncertainties are assigned. The computational work was done using the ROOT and AliRoot frameworks.