Erlangen 2026 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 77: Higgs Physics VIII

T 77.7: Vortrag

Donnerstag, 19. März 2026, 17:45–18:00, KH 02.013

Integration of the PAIReD Tagger for the Higgs-boson Decay into Charm - Anticharm Quark Pairs in Vector-Boson Associated Production with the CMS Experiment — •Ishmeet Kaur Vohra, Alexander Schmidt, Arnd Meyer, Andrey Pozdnyakov, Valentyn Vaulin, Pedro Gouveia Pinto Da Costa, Patrick Kersten, and Jan Terörde — III. Physics Institute A, RWTH Aachen University, Aachen, Germany

Reconstructing hadronically decaying heavy particles at low to moderate boosts is challenging when using only small-radius jets. The PAIReD and PAIReDEllipse approaches address this by forming jet candidates from pairs of small-radius jets and in the elliptical variant, by including all particles inside an extended elliptical region in the η - φ plane. Their performance has been studied for Higgs boson decays into bottom-antibottom (bb) and charm-anticharm (cc) quark pairs produced in association with a vector boson (V), using ParticleTransformer-based algorithms for jet regression and classification. The methods show improved reconstruction efficiency and background separation in the lowboost regime compared to standard AK4 techniques, while remaining competitive at higher boosts. This contribution covers the integration of the PAIReD Tagger into the analysis of the VH(H → cc) channel, including an initial investigation of the related systematic uncertainties.

Keywords: PAIReD Tagger; Jet Tagging; Higgs; Charm; Machine Learning