25–29 Aug 2025
Madison, WI
US/Central timezone

Inclusive flavour tagging at LHCb

28 Aug 2025, 11:20
20m
Monona Convention Center (Madison, WI)

Monona Convention Center

Madison, WI

Computing AI / ML Parallel

Speaker

Jonah Evan Blank (Technical University Dortmund)

Description

We present a new algorithm for tagging the production flavour of neutral 𝐵0 and 𝐵0𝑠 mesons in proton-proton collisions. It is based on a deep neural network, DeepSets, and exploits a comprehensive set of tracks associated with the hadronization process. The algorithm is calibrated on data collected by the LHCb experiment at a centre-of-mass energy of 13TeV. This inclusive approach enhances the flavour tagging performance beyond the established same-side and opposite-side tagging methods. The gains
in tagging power offer significant benefits for precision measurements
of 𝐶𝑃 violation and mixing in the neutral 𝐵 meson systems.

Authors

Jonah Blank (Purdue University) Jonah Evan Blank (Technical University Dortmund)

Co-author

Keri Vos (Nikhef National institute for subatomic physics (NL))

Presentation materials

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