30 July 2026 to 5 August 2026
Natal Convention Center
America/Sao_Paulo timezone

ML-based $B$ meson flavour tagging at LHCb

31 Jul 2026, 14:45
15m
Room #1 (Praiamar Natal Hotel & Convention)

Room #1

Praiamar Natal Hotel & Convention

R. Francisco Gurgel, 33 - Ponta Negra, Natal - RN, 59090-050
Talk Artificial Intelligence, Machine Learning and Quantum Computing in HEP Artificial Intelligence, Machine Learning and Quantum Computing in HEP

Speaker

Peilian Li (University of Chinese Academy of Sciences)

Description

The precise determination of the initial flavour of neutral B mesons is crucial for time-dependent measurements of CP violation and mixing parameters, where it directly constrains the ultimate physics sensitivity. Leveraging the unprecedented data set of Run 3 and capitalizing on modern algorithmic advances, the LHCb collaboration has undertaken a comprehensive redesign of its flavour tagging (FT) algorithms. This new system extensively exploits state-of-the-art machine learning techniques, including advanced deep neural network architectures, to optimally combine information from diverse tagging particles. This contribution presents the novel FT strategy, detailing the machine learning frameworks and showcasing the resulting performance gains that pave the way for next-generation precision measurements in heavy-flavour physics.

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Author

Peilian Li (University of Chinese Academy of Sciences)

Presentation materials