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Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 94: Trigger+DAQ 3

T 94.5: Vortrag

Donnerstag, 7. März 2024, 17:00–17:15, Geb. 30.23: 3/1

Elevating LHCb’s beauty selection for Run 3: A neural network approachJohannes Albrecht1, Gregory Max Ciezarek2, Blaise Delaney3, Niklas Nolte4, and •Nicole Schulte11TU Dortmund University, Dortmund, Germany — 2CERN, Geneva, Switzerland — 3Massachusetts Institute of Technology, Cambridge, USA — 4META AI (FAIR)

The performance of LHCb’s beauty physics program relies significantly on b-hadron triggers, specifically topological triggers. These triggers are designed for the comprehensive identification of b-hadron candidates, leveraging the distinct decay topology of beauty particles and their anticipated kinematic properties. Constituting the predominant component on the trigger selection output, topological triggers play a crucial role in the success of numerous physics analyses within LHCb.

In this contribution, we present the Run 3 implementation of the topological trigger, seamlessly integrating Lipschitz monotonic neural networks. This architecture ensures resilience in the face of varying detector conditions and enhances sensitivity to long-lived candidates. This framework can potentially open avenues for the discovery of new physics at LHCb. The primary focus is on synergizing a comprehensive physics selection with state-of-the-art machine learning approaches, all within the constraints of available computational resources.

Keywords: LHCb; Trigger; Machine Learning; Neural Networks; Real-Time

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