15–19 Sept 2025
CERN
Europe/Zurich timezone

Design and deployment of calibrated NNs for neutral B mesons tagging

15 Sept 2025, 10:20
5m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
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1. Cutting Edge AI for Offline Data Processing Cutting Edge AI for Offline Data Processing

Speaker

Alberto Bragagnolo (CERN)

Description

Develop state-of-the-art NN for flavour inference of neutral B mesons for CKM CPV analyses, evolution of work performed in BPH-23-004. NNs are used as probability estimators, so perfect calibration is as important as performance. To be deployed in flagship BPH analyses.

CERN group/ Experiment

EP-CMG

Working area Area 1" Cutting Edge AI for Offline Data Processing
Project goals Apply the latest state-of-the-art model (e.g. transformers) in place of outdated architectures (DeepSets, Fully Connected Dense layers) to improve performance. Standardise deployment on NanoAOD format for wider usage in CMS.
Timeline 1 year
Available person power 2 fellows (~25% of the time), 2 users (~25% of the time)
Additional person power request none
Is this an already ongoing activity? Yes
Indicative hardware resources needs Access to a GPU cluster with LCG-like software stack and cvmfs access with fast storage facilities

Authors

Alberto Bragagnolo (CERN) Enrico Lusiani (Universita e INFN, Padova (IT)) Georgios Karathanasis (CERN) Maurizio Pierini (CERN) Paris Sphicas (CERN/Athens) Pietro Grutta (University of Padua, INFN)

Presentation materials

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