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T: Fachverband Teilchenphysik

T 2: Higgs Physics I (HH and trilinear coupling)

T 2.5: Talk

Monday, March 31, 2025, 17:45–18:00, ZHG104

Study of b+tau triggers in the HH→ bbττ analysis with the ATLAS experiment — •Pim Bijl, Karl Jakobs, Benedict Winter, Christian Weiser, and Yingjie Wei — Insitute of Physics, Albert Ludwigs Universitaet, Freiburg, Germany

In order to search for di-Higgs production at the Large Hadron Collider (LHC) with the ATLAS experiment, a very efficient event selection is necessary. The first step in the event selection are triggers that decide what LHC collision events are kept for further analysis. This talk will present a study of newly introduced triggers that target the presence of a b-quark jet and a hadronically decaying tau lepton. These triggers are of great interest to the search for di-Higgs production, as they target the signature of the HH→ bbττ decay channel. This decay channel has one of the largest branching ratios of di-Higgs decays and provides a clean decay signature. A comparison will be made to the efficiency of the triggers that are currently in use in the HH→ bbττ search. Finally, the impact of the new triggers on the sensitivity to the production of di-Higgs in the bbττ decay channel will be summarized.

Keywords: tau lepton; di-Higgs; ATLAS; Trigger; b-jet