Münster 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 104: Suche nach neuen Teilchen 5
T 104.6: Vortrag
Donnerstag, 30. März 2017, 18:00–18:15, JUR 2
Search for new physics in the dilepton channel with ATLAS
using proton-proton collisions at √s = 13 TeV — •Simon Schmitz, Stefan Tapprogge, and Markus Zinser — Johannes Gutenberg-Universität Mainz, Institut für Physik
Decays with two leptons in the final state are considered to be one of the most promising processes to find new physics. Well understood backgrounds as well as high signal efficiencies lead to an excellent sensitivity to models beyond the Standard Model predicting a narrow resonance (for example a Z′ boson) decaying into two leptons. The search is performed with final states consisting either of two electrons or two muons. The results are based on an integrated luminosity of 36.5 fb−1 of proton-proton collision data at √s = 13 TeV recorded with the ATLAS detector in 2015 and 2016.
This talk presents the analysis details with a focus on the determination of the background arising from QCD processes. This background is essential to know in the dielectron channel and can not be estimated by Monte Carlo simulation. Finally the status of the analysis in both channels will be shown. Furthermore an approach to express the results of the analysis in a model-independent way allowing a comparison to a wide variety of models is presented.