Physics

I work with the ATLAS Collaboration at the Large Hadron Collider (LHC) at CERN, Geneva, on several different areas of high-energy particle physics.

Properties of the Top Quark

The top quark is the heaviest fundamental particle. This fact alone means that the top quark is extremely interesting to study. It provides us with a test for the Standard Model of Particle Physics, and allows us to investigate avenues of New Physics (i.e. physics not in the Standard Model.)

I am interested in properties of the top quark, particularly how it spins. We have studied top quark spin correlations and polarisations using the ATLAS Run-2 dataset in several top production mechanisms.

Our paper Observing ttZ spin correlations at the LHC describes the phenomenology and proposed measurements of top-quark spin properties in ttZ production at the LHC.

Quantum Information in Collider Physics

I am interested in the intersection between collider physics and quantum information. We are looking to make measure quantum phenomena such as entanglement in top quark and W boson qubit and qutrit states, the first of such measurements ever undertaken in a high-energy physics context!

Setting Limits on New Physics

The effective field theory (EFT) framework is an extremely popular means of constraining where new physics may be. I am interested in applying the EFT method to the top-quark sector: constructing new observables to probe the SMEFT in new directions (including ML-derived obseravbles), and using LHC top-quark data to set new limits on beyond-Standard Model physics.

This plot shows expected limits - but I need to change this plot don’t I…

Machine Learning for Fast Simulation

Simulation of the interaction between particles and the ATLAS detector is incredibly CPU-intensive. This work looks at applying DNN and GNN regression techniques to write emulate the detector response in an expeditious way.