Amid the chaotic chains of events that ensue when protons smash together at the Large Hadron Collider in Europe, one particle has popped up that appears to go to pieces in a peculiar way. All eyes are ...

Physicists at the Belle experiment at the KEK laboratory in Japan have discovered a new particle that provides the best evidence yet that some mesons contain four quarks rather than the usual two.

Molecular pentaquark Artist’s impression of how five quarks could bind together to form an exotic hadron. Such particles have been spotted at CERN, Fermilab and SLAC. (Image: Daniel Dominguez/CERN) ...

The discovery of what appears to be a new subatomic particle with bizarre properties is challenging theorists’ understanding of how matter behaves on the scale of protons and neutrons. What seems ...

Theorists have performed calculations to predict the temperature at which bottomonium mesons will melt. Bottomonium mesons are particles made of one of the six types of quark: a heavy bottom quark ...