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T: Fachverband Teilchenphysik
T 2: Higgs Physics I (HH and trilinear coupling)
T 2.1: Vortrag
Montag, 31. März 2025, 16:45–17:00, ZHG104
Status for Run3 in the HH —→ bbτ+τ− channel with the CMS Experiment — •Bogdan Wiederspan, Nathan Prouvost, Ana Andrade, Marcel Rieger, Philip Keicher, Anas Haddad, Tobias Kramer, and Peter Schleper — University Hamburg, Hamburg, Germany
Since its discovery at the Large Hadron Collider (LHC) in 2012, the Higgs boson advanced our understanding of the Standard Model. Despite significant progress, several of its fundamental properties and couplings remain elusive. Among these is the concrete form of the Higgs potential, which depends on the still-undiscovered trilinear self-coupling, often denoted in the kappa framework as κλ.
The Di-Higgs production with subsequent decays into pairs of bottom quarks and tau leptons, holds particular interest to probe aforementioned coupling, due to its combination of a strong identifiable signature and substantially large statistics.
Given the challenges posed by the small predicted cross section of Di-Higgs processes and the large background contribution, machine learning proves to be an essential tool for enhancing the sensitivity of searches. This talk presents the current efforts of developing a stronger discriminator trained with partial Run3 data recorded with the CMS experiment, to classify events in the HH —→ bbτ+τ− channel and further increasing sensitivity.
Keywords: Di-Higgs; bbtautau; run3; LHC; CMS