Cooke, Harry 
ORCID: 0000-0001-9297-1063
(2024).
Electroweak Multiboson Interactions in Zγjj.
University of Birmingham.
Ph.D.
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Cooke2024PhD.pdf
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Abstract
Two measurements of Standard Model processes sensitive to electroweak multiboson interactions are presented in the Z(→ll)γjj final state. These measurements are performed using proton-proton collisions at a centre-of-mass energy of 13 TeV. The data, recorded by the ATLAS experiment, correspond to an integrated luminosity of 139 /fb. Electroweak production of the Zγjj system in a phase space sensitive to vector-boson scattering production of Zγ is measured with a significance of 10 standard deviations, and consistent with the Standard Model prediction. This represents the first observation of this process by the ATLAS experiment. Additionally, the signal strength for the semileptonic decay of the VZγ triboson production process is measured and a 95% confidence level upper limit on the rate of this process is set at 3.5 times the rate predicted by the Standard Model. Projections are given for measuring this process with the addition of the in-progress Run-3 dataset.
| Type of Work: | Thesis (Doctorates > Ph.D.) | |||||||||
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| Award Type: | Doctorates > Ph.D. | |||||||||
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| Licence: | Creative Commons: Attribution-Noncommercial-Share Alike 4.0 | |||||||||
| College/Faculty: | Colleges > College of Engineering & Physical Sciences | |||||||||
| School or Department: | School of Physics and Astronomy | |||||||||
| Funders: | Science and Technology Facilities Council | |||||||||
| Subjects: | Q Science > QC Physics | |||||||||
| URI: | http://etheses.bham.ac.uk/id/eprint/14967 |
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