6–11 Jul 2025
PALAIS DU PHARO, Marseille, France
Europe/Paris timezone

Refining Tau Identification with Domain Adaptation Techniques at CMS

9 Jul 2025, 18:23
20m
Espace 1000

Espace 1000

Poster T07 - Flavour Physics and CP Violation Poster T07

Speaker

Stepan Zakharov (Deutsches Elektronen-Synchrotron DESY)

Description

Hadronically decaying tau leptons are a challenging signature to study given it can be mimicked by quark and gluon jets, electrons, or muons. The identification of this signature via a convolutional neural network performed by CMS during the LHC Run 2 brought a massive improvement with respect to previous strategies. To further improve the identification and reconstruction of hadronic decays of tau leptons, CMS has deployed, as of the start of Run 3, a new algorithm: DeepTau v2.5. This poster presents the performance resulting from these improvements in the network architecture using early Run 3 data and showcases the use of domain adaptation techniques to improve the modelling of data.

Authors

CMS Collaboration Stepan Zakharov (Deutsches Elektronen-Synchrotron DESY)

Presentation materials

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