Model unspecific search for new physics in CMS based on 2011 data
P. Papacz, Thomas Hebbeker · RWTH Publications (RWTH Aachen) · 2014
The start of the LHC in the year 2009 has given access to the energy regime beyond the TeV scale. Different theories of particle physics developed in the past years and decades give reason to expect new phenomena at that energy scale, such as new particles or modified couplings. Many of these phenomena are predicted to show effects in various final states with different particle content. The many possibilities arising from the large number of theories make it difficult to provide dedicated analyses for each thinkable signature. Furthermore, it is impossible to estimate which models have not been covered by theoretical approaches, and thus might be overlooked by dedicated analyses. This thesis presents a complementary approach where large parts of the data recorded with the CMS detector are classified by their physics content (electrons, muons, jets, etc.) and systematically scanned for deviations from the Standard-Model prediction (Monte-Carlo simulation). In this thesis the results of the Model Unspecific Search in CMS (MUSiC) with special focus on data taken in the year 2011 are presented. No significant deviations from the Standard-Model prediction have been found in the analysed 2011 CMS data.