Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 30: Higgs decay in fermions II

T 30.9: Talk

Tuesday, March 16, 2021, 18:00–18:15, Te

Search for ZZ/ZH events in the 4b final state — •Roman Küsters, Tatjana Lenz, and Jochen Dingfelder — Rheinische Friedrichs-Wilhelms-Universität Bonn

One of the primary physics goals at the LHC is to measure the Higgs self-coupling and to determine the shape of the Higgs potential. The Higgs self-coupling can be directly measured in the di-Higgs (HH) production channel. Thus a search for the HH production is one of the important goals at the LHC. The HH->4b decay mode has the highest branching ratio and is thus one of the main search channels. The current sensitivity to HH is about 6.9 times the Standard Model cross section. The idea is to use the ZZ and ZH channels with a higher production cross section to validate the HH analysis. This talk presents the search for ZZ and ZH production in the 4b final state at a center-of-mass energy of 13 TeV collected with the ATLAS detector in 2015-2018 and how it can be used to validate the HH->4b analysis.