Search for heavy Z h and W h resonances in 13 TeV proton-proton collisions with 
the ATLAS detector at the LHC

Maschek, Stefan Raimund

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Search for heavy Z h and W h resonances in 13 TeV proton-proton collisions with the ATLAS detector at the LHC

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Maschek, Stefan Raimund
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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https://publications.mppmu.mpg.de/2021/MPP-2021-210/FullText.pdf
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Citation

Maschek, S. R. (2021). Search for heavy Z h and W h resonances in 13 TeV proton-proton collisions with the ATLAS detector at the LHC. PhD Thesis, TU München, München.

Cite as: https://hdl.handle.net/21.11116/0000-000A-1B96-F

Abstract

Searches are presented for new heavy resonances decaying into leptonically decaying weak gauge bosons and Higgs bosons decaying into a bottom quark pair using 139 fb −1 of proton collision data of the ATLAS detector of the LHC at 13 TeVcenter-of-mass energy. Such diboson resonances are predicted by many extensions of the Standard Model of particle physics. The reconstruction of strongly boosted h → bb̄ decays has been optimized based on b-tagging of track jets and analysis of jet substructure. The searches are is performed in a model-independent way, and the results are interpreted in benchmark models predicting spin-0 or spin-1 resonances. No significant excess has been observed, and improved upper limits have been set on the production cross section times branching ratio. The sensitivity for another fermiophobic spin-1 resonance model has been studied for the first time in the ATLAS experiment.