My CERN fellowship is split between my work on the ATLAS experiment at the LHC and preparations for the future ALLEGRO detector at the FCC. My research focuses on connecting quantum information theory with particle physics, particularly in the top quark and Higgs boson sectors. I am also involved in performance studies of tile calorimeters for FCC.

Other responsibilities include:

• Leading the ATLAS Top Properties & Mass subgroup
• Developing analysis software pipelines towards the High-Luminosity LHC

During my Humboldt fellowship, I studied the electroweak couplings of the top quark: $t\overline{t}Z$, $tZq$, $tWZ$ and $t\overline{t}\gamma$. Besides my contributions to the measurement of these Standard Model processes with the ATLAS experiment, I led their interpretation in the framework of Effective Field Theory. With colleagues from the CMS collaboration, I prepared the very first cross-experiment combination of top+X results. Last but not least, I helped set up the first efforts on quantum entanglement and the violation of Bell’s inequalities in top quarks and Higgs bosons.

Other responsibilities included:

• Supervision of BSc, MSc and PhD students
• Teaching of specialised MSc courses (particle physics labs, top quark physics)
• Organisation of the HASCO'22 and HASCO'23 summer schools
• Leading the ATLAS Top Reconstruction subgroup

I led the legacy $t\overline{t}Z$ ATLAS measurement and contributed to the first measurement of the $t\overline{t}$ spin density matrix with the full Run 2 dataset; for both analyses, I developed an extensive Effective Field Theory fitting framework in the Julia language. I was also involved in background estimations for a combination of Dark Matter searches with $t\overline{t}+E_{\mathrm{T}}^{\mathrm{miss}}$ signatures, as well as prototyping an auto-encoder for an Anomaly Detection based search for new physics.

Other responsibilities included:

• Supervision of MSc and PhD students
• Summarising ATLAS and CMS $t\overline{t}+X$ results for the LHC Top working group
• Supporting the ATLAS Top group in Monte Carlo generation
• Acting as ATLAS Trigger online expert and online release coordinator

• Funding assistance for UK HEP workshops
• Organisation of the yearly Astrophysics + HEP conference
• Liaison with UK students
• Outreach activities