Chloé Malbrunot
Research Scientist + Deputy Department Head, Particle Physics
Dr. Chloé Malbruont’s research lies at the intersection of several areas of physics in relation to three major fundamental topics in particle physics:
- The search for new physics beyond the Standard Model (SM) at the precision frontier with low energy probes.
- The origin of matter/antimatter asymmetry.
- Tthe nature of dark matter.
Malbrunot’s work relies on low energy (from MeV to μeV) precision measurements at accelerator facilities to provide potential answers to these fundamental questions.
Following the completion of the PIENU experiment at TRIUMF, Malbrunot’s team is involved in the development of the next generation experiment called PIONEER at the Paul Scherrer Institute in Switzerland, where her team will use pions, the lightest particles composed of quarks, to search for new physics. A first goal is the precise measurement of the branching ratio of pion decays to positrons versus muons. While the SM predicts this ratio with extremely high precision, experimental measurements lag behind by more than an order of magnitude, leaving an exciting and largely unexplored window for new physics — particularly in relation to the flavour structure of the SM. The team also aims to significantly improve the measurement of the extremely rare pion beta decay, which would provide a new and independent determination of Vud, a parameter of the CKM quark mixing matrix.
I am also involved in the nEXO experiment, leveraging synergies with PIONEER in the development and application of noble liquid technologies.
Prior to joining TRIUMF my research focused on high precision measurement of antihydrogen atoms with the ASACUSA and AEGIS experiments at CERN as well as novel axion searches with high frequency microwave cavities.
We frequently have opportunities available for undergraduate, graduate, and postdoctoral positions. If you are interested in joining our team, don’t hesitate to reach out to me!