Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 2: Higgs Physics I (HH and trilinear coupling)
T 2.2: Vortrag
Montag, 31. März 2025, 17:00–17:15, ZHG104
Search for Di-Higgs Pair Production in the bbtautau decay channel using Run2+Run3 Data with the ATLAS Detector at the LHC. — •Bhupesh Dixit1,2, Carl Gwilliam3, Jordy Degens4, and Katharina Behr5 — 1University of Liverpool, United Kingdom — 2DESY, Hamburg — 3University of Liverpool, United Kingdom — 4University of Liverpool, United Kingdom — 5DESY, Hamburg
Di-Higgs studies provide the possibility of probing the full shape of the Higgs potential via constraints on the Higgs trilinear coupling. Among all the di-Higgs decay channels, di-Higgs decays to two b-jets and two tau-leptons lies in the sweetspot for the study of di-Higgs owing to its relatively low background and significant branching ratio, making it the most sensitive channel among the ATLAS Run-2 searches for the study of Higgs self-coupling. Using Run2+Run3 data with improved analysis techniques a significant improvement is expected in the sensitivity to Higgs boson pair production. I will present an overview of the analysis strategy and current status with emphasis on the estimate of the important background from SM ttbar production.
Keywords: Di-Higgs; ATLAS; LHC