29 January 2024 to 2 February 2024
CERN
Europe/Zurich timezone

The DL Advocate: Playing the devil's advocate with hidden systematic uncertainties

29 Jan 2024, 17:10
20m
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162
Show room on map
Contributed talk 2 ML for analysis : event classification, statistical analysis and inference, including anomaly detection Contributed Talks

Speaker

Andrea Mauri (Imperial College (GB))

Description

We propose a new method based on machine learning to play the devil’s advocate and investigate the impact of unknown systematic effects in a quantitative way. This method proceeds by reversing the measurement process and using the physics results to interpret systematic effects under the Standard Model hypothesis. We explore this idea with two alternative approaches, one relies on a combination of gradient descent and optimisation techniques, the other employs reinforcement learning. We illustrate the potentiality of the presented method by considering two examples, firstly the case of a branching fraction measurement of the decay of a b-hadron, secondly the determination of the $P_5^\prime$ angular observable in $B^0 \to \mu^+ \mu^-$ decays. Based on https://arxiv.org/abs/2303.15956

Authors

Aleksandr Iniukhin (National Research University Higher School of Economics (RU)) Andrea Mauri (Imperial College (GB)) Andrei Golutvin (Imperial College London) Andrey Ustyuzhanin (Yandex School of Data Analysis (RU)) Guillermo Hijano Mendizabal (University of Zurich (CH)) Nicola Serra (University of Zurich (CH)) Patrick Haworth Owen (University of Zurich (CH))

Presentation materials