Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 87: Higgs physics IX (Charm and Tau Final States)
T 87.3: Vortrag
Freitag, 4. April 2025, 09:30–09:45, ZHG104
PAIReD jets in CMS: Recent developments of a novel jet tagging approach for H(cc) and H(bb) searches in the CMS experiment — Gaetano Barone1, Alexander Jung2, Ming-Yan Lee2, Spandan Mondal1, Trevor Russel1, Uttiya Sarkar2, Alexander Schmidt2, •Jan Schulz2, and Ulrich Willemsen2 — 1Brown University, Providence, USA — 2III. Physikalisches Institut A, RWTH Aachen University, Germany
The identification of jet flavors based on machine learning is the most critical ingredient for the search for rare Higgs decays in two charm quarks. For the upcoming CMS analysis, a new jet tagging strategy has been developed that outperforms classical tagging approaches, especially for small Lorentz boosts of the Higgs boson. The central element of this new method is the so-called PAIReD jet, a new unconventional jet type which, in contrast to traditional AK4 jets, exploits correlations between the two charm jets. This talk will give an overview of the PAIReD approach and recent developments such as mass-decorrelated training and simultaneous jet-mass regression.
Keywords: Heavy-flavor tagging; VH(cc) analysis; Machine learning; CMS experiment