Solving the Quandary of the Quark
Professor Christine Davies
University of Glasgow
The strong interaction is one of the four fundamental forces of nature and governs the interaction of quarks that make up the protons and neutrons of the atomic nucleus. Because quarks are never seen as free particles, the effects of the strong interaction are largely hidden from our direct view. However, these effects are very important for understanding subatomic particles. Christine Davies will discuss how the theory of the strong interaction, Quantum Chromodynamics (QCD), can be solved numerically using a method called lattice QCD. It offers the possibility of accurate results from first principles for the properties of the bound states of quarks known as hadrons. These are the particles observed in experiments at, for example, the Large Hadron Collider at CERN. Comparison with experimental results can then lead to stringent tests of our understanding of fundamental particle physics as well as searches for discrepancies that can point to new interactions at a deeper level. She will describe some of the results from lattice QCD, including those that form part of the calculation of the magnetic moment of the muon. The new experimental determination of this magnetic moment was featured in the news recently since it shows a tantalising discrepancy with what we expect from our Standard Model of particle physics.
The North East branch would like to thank The Lit & Phil in Newcastle for their help with this event. You can find out more about them, and their events here.