Looking deep inside quarks: CMS test probes to 10⁻²⁰ meters and finds no inner structure

According to our current understanding of the universe, quarks are fundamental, point-like particles: basic building blocks that are not made up of smaller particles. A recent paper from the CMS Collaboration describes how it probed quarks to the scale of 10-20 meters to test this premise.

Originally published at Phys.org