Particle discovered at CERN solves a 20-year-old mystery
The LHCb experiment cavern at CERN CERN/Brice, Maximilien A new particle has popped into existence at CERN’s Large Hadron Collider, a heavier proton-like particle that contains two charm quarks. Protons and neutrons are examples of a class of particles called baryons, which each contain three fundamental subatomic particles called quarks that come in a variety…