CMS Data Analysis

schematic view of the CMS detector; source: CMS/CERN

The Large Hadron Collider (LHC) at CERN provides proton-proton collisions at high centre of mass energies and luminosity. Both, the centre of mass energy of 7-14 TeV and the luminosity of the LHC by far exceed those of previous colliders. We participate in the Compact Myon Solenoid Experiment (CMS), wich is designed to find the Higgs particle as the last missing piece of the Standard Model, but also possible extensions up to mass scales of several TeV. With the discovery of a new boson by the CMS and ATLAS collaborations in July 2012 new questions arise. Is this particle the long sought Higgs boson or does it have slightly different properties than predicted by the Standard Model? If that would be the case it could lead us directly towards a possible extension of the Standard Model.

One of our main interests are searches for Supersymmetry, which is one of the most appealing scenarios for the explanation of electroweak symmetry breaking and the dark matter content of our universe. We are studying a wealth of final states, most prominently final states containing jets, tau leptons, photons and missing transverse momentum.

Our group is also strongly involved in the measurement of the top quark, the heaviest of the known quarks. Since the Higgs particle couples strongly to the top quark, a precise measurement of the top-quark's mass yields important constraints on the Higgs particle and the Standard Model itself. Also, since many new physics scenarios predict new particles which couple strongly to the top-quark, a detailed understanding of its properties and dynamics is crucial for constraining these models.

Within the CMS collaboration our group has a wide range of responsibilities, from the calibration of the jet energy scale and missing transverse momentum to the development and maintenance of the reconstruction and analysis software.

More information about CERN, the LHC and CMS can be found at the following links:
European Organisation for Nuclear Research (CERN)
Large Hadron Collider (LHC)
Compact Muon Solenoid Experiment (CMS)