• Corpus ID: 119456288

Studying $WW\gamma$ and $WZ\gamma$ production in proton-proton collisions at $\sqrt{s} = 8$ TeV with the ATLAS experiment

@article{Djuvsland2017StudyingA,
  title={Studying \$WW\gamma\$ and \$WZ\gamma\$ production in proton-proton collisions at \$\sqrt\{s\} = 8\$ TeV with the ATLAS experiment},
  author={Julia Isabell Djuvsland},
  journal={arXiv: High Energy Physics - Experiment},
  year={2017}
}

• J. Djuvsland
• Published 25 August 2017
• Physics
• arXiv: High Energy Physics - Experiment

Quartic gauge couplings are tested by this study of the production of $WW\gamma$ and $WZ\gamma$ events in 20.2 fb$^{-1}$ of proton--proton collisions at a centre-of-mass energy of $\sqrt{s} = 8$ TeV recorded with the ATLAS detector at the LHC. The final state of $WW\gamma$ events containing an electron, a muon and a photon is analysed as well as the final states of $WW\gamma$ and $WZ\gamma$ production containing an electron or a muon, two jets and a photon. For all final states two different fiducial regions are defined: one yielding the best sensitivity to the production cross-section of the process and one optimised for the detection of new physical phenomena. In the former region, the $WW\gamma$ production cross-section is computed and in both regions, upper limits on the $WW\gamma$ and $WZ\gamma$ production cross-section are derived. The results obtained in the second phase space are combined for the interpretation in the context of anomalous quartic gauge couplings using an effective field theory.