Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 5: Suche nach Neuen Teilchen I

T 5.4: Vortrag

Montag, 25. März 2019, 16:50–17:05, H07

Additional studies in the search for the single production of vector-like quarks decaying to a Wb final state. — •Michel Smola — Humboldt Universität zu Berlin

Vector-like quarks (VLQs) are hypothetical spin-1/2 fermions suggested by various BSM models. Based on a 36.1 fb⁻¹ data set, an ATLAS analysis has searched for singly produced VLQs decaying to Wb final states using one-lepton final states. The analysis is now extended to the complete LHC Run 2 data set. This talk reports on studies for the new analysis: 1) background suppression by identifying jets in the forward detector region |η| > 2.5, 2) evaluation and comparisons of methods to estimate multijet background.