Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 27: Suche nach Physik jenseits des Standardmodels II

T 27.5: Talk

Tuesday, March 20, 2018, 17:30–17:45, Philo-HS4

Uncertainties on multijet background for searches with jets and missing transverse energy with the ATLAS detector — •Vincent Kitali, Christian Sander, and Krisztian Peters — DESY, Hamburg, Deutschland

The Higgs-Boson might be a portal to new physics. It may for example couple to massive particles not visible to the ATLAS detector, which are dark matter candidates. The Vector Boson Fusion (VBF) channel offers a clean final state with two jets and missing transverse energy.

One background are QCD events, in which missing transverse energy is reconstructed due to the imperfect reconstruction of the jet. The uncertainties on this background are large and need to be understood. To quantify, how many events with jets in the final state are misidentified as signal, jets are smeared using simulated jet transverse momentum response distributions. The main topic of this talk is the test of these simulations for their viability.