The non-Abelian gauge structure of the Standard Model (SM) electroweak sector can be directly probed in the production of three massive vector bosons. This process is sensitive to SM triple and quartic gauge couplings. Deviations from the expected value could indicate hints of new physics. We focus on multi-lepton events in proton-proton collisions collected by the ATLAS experiment. This analysis employs machine learning to discriminate between signal and background processes and increase the significance of rejecting the background-only hypothesis.
Gabriel Rabanal is a graduate student at Harvard University working on the ATLAS experiment. His current research focuses on measuring the production of three electroweak bosons using machine learning techniques to increase sensitivity. In the past, Gabriel worked on the commissioning of the first MicroMegas sectors of the New Small Wheel (NSW), an upgrade to the ATLAS muon spectrometer in the forward regions. He earned his BA at the National University of Engineering in Lima, Peru.