## Doctoral Dissertations

Dissertations that have an embargo placed on them will not be available to anyone until the embargo expires.

#### Author ORCID Identifier

https://orcid.org/0000-0001-8119-0333

#### AccessType

Open Access Dissertation

dissertation

#### Degree Name

Doctor of Philosophy (PhD)

Physics

2021

February

Stephane Willocq

#### Subject Categories

Elementary Particles and Fields and String Theory

#### Abstract

A search for heavy resonances decaying to a $W$ or $Z$ boson and a Higgs boson in the final state is described. The search uses $139\ \mathrm{fb}^{-1}$ of proton-proton collision data at $\sqrt{s} = 13$ TeV collected by the ATLAS detector at the CERN Large Hadron Collider from 2015 to 2018. The results are presented in terms of constraints on a simplified model with a heavy vector triplet. Upper limits are set on the production cross-section times branching fraction for resonances decaying into a W/Z boson and a Higgs boson in the mass range between 1.2 to 5 TeV.

#### DOI

https://doi.org/10.7275/18468882

COinS