Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 20: DAQ, trigger and electronics I

T 20.5: Talk

Monday, March 15, 2021, 17:00–17:15, Tt

Towards a Level 1 Single Track Z Trigger in the Belle II Experiment — •Felix Meggendorfer^{1, 3}, Steffen Baehr², Christian Kiesling^{1, 4}, Sebastian Skambraks^{1, 4}, and Kai Lukas Unger² for the Belle II collaboration — ¹Max-Planck-Institut für Physik — ²Karlsruher Institut für Technologie — ³Technische Universität München — ⁴Ludwig-Maximilians-Universität München

The Neurotrigger is a Level 1 track trigger within the drift chamber in the Belle II Experiment, which uses a neural network for the z vertex estimation. Since it ran stable in the last run period of 2020, we managed to improve the delta z resolution by using real data for the network training. We now aim for an unprescaled single track trigger operation from 2021 on. This will lead to a much better sensitivity for low multiplicity events, which is important for the discovery of new physics, for example in the sectors of tau lepton flavor violation or dark matter searches.