The quest for axions and other new light particles

Understand

Standard Model extensions often predict low-mass and very weakly interacting particles, such as the axion.

• A number of small-scale experiments at the intensity/precision frontier are actively searching for these elusive particles, complementing searches for physics beyond the Standard Model at colliders.
• Whilst a next generation of experiments will give access to a huge unexplored parameter space, a discovery would have a tremendous impact on our understanding of fundamental physics.