Christina Dimitriadi

I am a postdoctoral researcher in experimental particle physics at KTH and a member of the ATLAS Collaboration at CERN. ATLAS is one of the major experiments at the Large Hadron Collider (LHC), the world's largest and most powerful particle accelerator, located near Geneva, Switzerland. The LHC accelerates particles to nearly the speed of light and collides them to recreate conditions similar to those just after the Big Bang, helping us address fundamental questions about the universe.

I defended my PhD thesis at Uppsala University in May 2024, where my main research focused on searches for Higgs boson pair production and efforts to constrain the Higgs boson self-coupling, as well as new couplings introduced in effective field theories. These studies are key to understanding the mechanism of electroweak symmetry breaking and testing the Standard Model predictions about the Higgs boson.

Currently, as a postdoc in the ATLAS group at KTH, I am exploring research avenues focused on extended Higgs sectors, which predict the existence of additional Higgs bosons beyond the one described in the Standard Model. Such searches aim to shed light on the matter-antimatter asymmetry of the universe and probe new physics beyond the Standard Model. In parallel, I am actively involved in ATLAS luminosity operations, contributing to the precise determination of particle collision rates in the detector, which is a critical input to physics analyses. Since April 2025, I have served as the ATLAS Online Luminosity Subgroup Convener. More recently, I have also started contributing to the High-Granularity Timing Detector upgrade project in preparation for the High-Luminosity LHC.

If you're curious about my research or just want to learn more about particle physics, feel free to get in touch - I'd love to chat!