Pepijn Bakker, PhD at Nikhef, will defend his thesis Wednesday 2 juni 2021 online at the Radboud University Nijmegen.
“Lighting the way – A model-independent multilepton analysis to search for new physics with the ATLAS detector”
The Standard Model of particle physics is the cornerstone of the experiments conducted using the ATLAS detector at CERN. To date, there are a series of phenomena that the Standard Model cannot yet explain sufficiently, and there is a lack of clear indications that can determine the best course for new analyses. This thesis looked for potentially interesting deviations in the data from the ATLAS detector measured between 2015 and 2018. Events with three or four leptons (electrons, muons, and their antiparticles) have been selected for their stability and the large number of possible theories that predict a final state with these types of particles. Data-driven methods have been used to model backgrounds with leptons created by hadronic decay in secondary interactions. The resulting analysis identifies deviations and sets limits in several signal areas, which provides insight into the predictive ability of such final states with three or four leptons.
“Lighting the way – A model-independent multilepton analysis to search for new physics with the ATLAS detector” (pdf)
The defense will be broadcasted on the youtubechannel of the Radboud Universiteit:
http://www.ru.nl/aula/livestream
Supervisor: dr. F. Filthaut
Co-supervisor: dr. S. Caron
contact: Pepijn Bakker