Advances in particle detection

Tuesday 23rd February 2021, 1500-1700 (UK Time)

Dr Christoph Englert (Profile)
Particle Physics in the Higgs Era

Our understanding of the weak force has been spectacularly verified with the discovery of the Higgs boson in 2012. Where does particle physics go from here? I will review the major shortcomings of the Standard Model of Particle Physics and discuss how they motivate new precision investigations of the electroweak interactions at present and future colliders. These theoretical developments are joined by a rapid adoption and the development of machine learning techniques in the context of particle phenomenology, which will enable the most robust constraints on the presence of new interactions beyond the Standard Model or facilitate their discovery.

Prof Monica D’Onofrio (Profile)
Searching for SUSY and other new physics models at the LHC

So far, knowledge of how fundamental particles behave is encapsulated in the Standard Model (SM) of particle physics. However, the theory lacks answers to many questions, including what is the invisible (dark) matter that, according to cosmological measurements, forms five times as much of the universe as the matter we see. Supersymmetry (SUSY) is still one of the most compelling theories beyond the SM which could give answers to some of these questions, in particular providing a solution to the dark matter mystery. In this talk, I shall give you a brief overview of how LHC experimentalists are searching for new physics and some of the results and milestones reached so far.

Prof Daniela Bortoletto (Profile)
The long road to finding the Higgs boson. A journey in the hunt, the discovery, and the study of the particle that gives mass to the Universe

The Higgs mechanism was postulated in the 1960s, starting a quest to validate the theory experimentally. The search culminated with the discovery at CERN of the long-sought Higgs boson in 2012, almost 50 years after it was first conceived. The discovery was a triumph for both experimental and theoretical particle physics. I will take you through this journey and discuss why this search was so challenging. I will highlight why building a discovery machine, the LHC, and critical advancements in detector technologies were vital for producing and capturing this particle’s decays. I will give you a glimpse into the next steps required to unlock the mysteries of the Higgs boson.

Prof Craig Buttar (Profile)
A Gigapixel detector for the ATLAS experiment

The physics of the very small requires large state of the art detectors capable of measuring the properties of the particles produced in the collisions so that the event can be reconstructed and compared to current physical models. In this talk, I will describe the pixel detector system that is being developed for operation in the ATLAS experiment at the high-luminosity LHC. The development of sensors and their readout will be described and the system level challenges will be discussed.