Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 76: Suche nach Physik jenseits des Standardmodels IV

T 76.6: Vortrag

Donnerstag, 22. März 2018, 17:45–18:00, Philo-HS4

Searches for pair production of leptoquarks in top quark final states at the CMS experiment. — Johannes Haller, Roman Kogler, •Arne Christoph Reimers, and Marc Stöver — Institut für Experimentalphysik, Universität Hamburg

In this talk we present searches for pair produced scalar leptoquarks in pp-collisions of √s=13 TeV. The data have been collected by the CMS experiment in 2016. In these analyses, the production of scalar leptoquarks decaying into a top quark and a muon or a tau lepton is studied.

The searches are carried out in final states with either two isolated muons or at least one hadronically decaying tau lepton and one additional electron or muon. Both channels are divided into sub-categories in order to maximize the sensitivity to a wide range of leptoquark masses. The dominating standard model backgrounds (tt and Drell-Yan or W+jets, respectively) are estimated by selecting control regions and extrapolating the data using additional shape and normalization information from simulation. A combination of both analyses is performed to achieve the best overall sensitivity.