CERN Accelerating science

ALICE is devoted to the study of a deconfined state of nuclear matter called Quark Gluon Plasma (QGP). The bottomonium (bound states of beauty-anti beauty quark) production is affected by the presence of the QGP, since bottomonium states are produced sooner than the QGP and witness the whole evolution of the plasma. In this analysis the data coming from Pb-Pb collisions at √sNN = 5 TeV have been analyzed in order to detect possible modifications of the production rates, with respect to the rates observed in proton proton collisions. Furthermore, the performances of the detectors involved in the muon identification during the LHC RUN1 and RUN2 has been tested using a new analysis framework implemented as part of this thesis. Finally, in order to optimize the results of future analyses, a new muon identification algorithm has been developed and tested. This algorithm will become necessary in the LHC RUN3 running conditions, when the much higher luminosity will require a quasi-online reconstruction of data.