Würzburg 2018 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 19: Top-Quarks: Produktion II
T 19.2: Vortrag
Montag, 19. März 2018, 16:15–16:30, Z6 - SR 2.011
Measurement of the differential top pair production cross section in dilepton events with large missing transverse momentum at CMS — •Marius Teroerde, Christian Schomakers, Christian Autermann, and Lutz Feld — I. Physikalisches Institut B, RWTH Aachen, Aachen, Germany
Top pair production is an important background in many measurements and searches for new physics at the LHC. Since top pair decays to dileptonic final states contain significant missing transverse momentum (pTmiss) and at least two jets, they have a similar signature as many potential models for physics beyond the standard model, especially those that could explain dark matter.
The presented analysis is based on a search for supersymmetry in dileptonic final states and focuses on the measurement of the differential cross section of top pair production as a function of different global event variables, such as pTmiss. The result can serve both as a standard model measurement and as a model-independent upper limit on physics beyond the standard model, as it can be compared to theoretical predictions. In the talk, the current state of the analysis is presented.