Physicists from the Compact Muon Solenoid (CMS) Collaboration at CERN’s Large Hadron Collider have produced a quark-gluon plasma – a state of matter thought to have existed right at the birth of the Universe – with fewer particles than previously thought possible. The material, dubbed ‘littlest liquid,’ was discovered by colliding protons with lead nuclei at high energy inside the CMS detector. Installation of the CMS beam pipe....
