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T: Fachverband Teilchenphysik

T 27: Suche nach Physik jenseits des Standardmodels II

T 27.9: Talk

Tuesday, March 20, 2018, 18:30–18:45, Philo-HS4

Search for disappearing tracks with the CMS experiment at √s=13 TeV — •Viktor Kutzner, Benedikt Vormwald, Peter Schleper, Samuel Bein, Georg Steinbrück, and Alexandra Tews — Institut für Experimentalphysik, Universität Hamburg

The status of the search for long-lived charged BSM particles, which decay in the CMS detector and produce disappearing track signatures, is presented. This signature is characterized by missing hits in the outer layers of the tracker with little or no energy deposited in the calorimeter. The findings are interpreted in the anomaly-mediated supersymmetry breaking model, which predicts a small mass splitting between the two lightest SUSY particles, typically being a chargino and a neutralino. This results in longlived charginos, which decay into soft non-reconstructed leptons or hadrons and a lightest supersymmetric particle.

The search aims to include short disappearing tracks with less tracker hits with respect to earlier analyses. Multivariate analysis methods are investigated for different categories of the disappearing track selection and results are presented using proton-proton collision data with √s=13 TeV collected with the CMS experiment in 2016 and 2017.