Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 54: Higgs Physics VI
T 54.5: Talk
Wednesday, March 18, 2026, 17:15–17:30, KH 01.019
Search for a charged Higgs (H±) boson in Wh(h→ bb) boosted channel using multivariate methods in ATLAS — •Satyajit Chakraborty and Tatjana Lenz — Physikalisches Institut, Universität Bonn, Germany
To address the shortcomings of the Standard Model, many models describing physics beyond the Standard Model (BSM) have been proposed. One such extension is the Two-Higgs-Doublet Model (2HDM), which predicts the existence of five Higgs Bosons: three neutral and two charged Higgs(H±).
This talk presents the search for a charged Higgs boson produced in association with a top quark and a bottom quark. The decay channel studied is H± → W±h, where h is the Standard Model Higgs boson (125 GeV) and h→ bb, while the W± boson decays either hadronically (W±→ qq′) or leptonically (W± → ℓν). The analysis is performed in the high-pT (Boosted) region using the full ATLAS Run-2 dataset. In this work, H± masses ranging from 1.2 TeV to 3 TeV have been studied. Multivariate methods based on a Deep neural network (DNN) architecture have been used to separate signal from background following the strategy used in the previous analysis. The use of a mass parameterized neural network (PNN) has also been investigated. The resulting limits on the charged Higgs boson production cross-section times branching ratio are compared between the two approaches to assess their relative performances.
Keywords: charged Higgs; Higgs to bb; Boosted analysis; Neural Networks; 2HDM