ATLAS

ATLAS is one of two large general-purpose experiments on the Large Hadron Collider (LHC) at CERN. It studies the remnants of the highest energy particle collisions ever created in a laboratory to test the Standard Model at extreme energies and search for new physics beyond. The Liverpool ATLAS group has a broad physics programme, pursuing different routes to uncover new physics via precision test of the Standard Model (SM) predictions, studying the properties of the Higgs boson and its role in Electroweak Symmetry Breaking (EWSB) and searching for new particles and forces beyond the SM. To achieve this, we make major contributions to detector performance studies and object reconstruction.  Looking to the future, we also play a leading role in the upgrade of the ATLAS inner tracking detector (ITk) for the high-luminosity LHC (HL-LHC).