The Future of Particle Physics: The Particle Physics Christmas Lecture

Professor John Womersley (STFC) gives the Particle Physics Christmas Lecture. In the past five years particle physicists have made major advances in understanding the nature of our universe – discovering the Higgs boson, and more recently detecting gravitational waves from a distant galaxy. Paradoxically we have also learned a lot more about what we don’t know: that the particles and forces we understand in ever greater detail make up only a small fraction of what’s in the cosmos, and that our theoretical prejudices about what remains to be discovered may have been very wrong. A new generation of ambitious experiments at accelerator laboratories, underground, and studying at the large scale structure of the universe will answer these questions – and surely open up others. I will also outline why it is essential that the country remains at the forefront of frontier research of this kind and how it contributes more broadly to society.