2017/08/25 by J. I. Djuvsland, Djuvsland, Julia Isabell
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · doi:10.48550/arxiv.1708.07667
openalex publication_date 2017/08/25 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
Quartic gauge couplings are tested by this study of the production of WWγ and WZγ events in 20.2 fb-1 of proton--proton collisions at a centre-of-mass energy of √(s) = 8 TeV recorded with the ATLAS detector at the LHC. The final state of WWγ events containing an electron, a muon and a photon is analysed as well as the final states of WWγ and WZγ 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 WWγ production cross-section is computed and in both regions, upper limits on the WWγ and WZγ 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.