The LHC Has Discovered a New Sub-Atomic Particle Called a Pentaquark

The LHC Has Discovered a New Sub-Atomic Particle Called a Pentaquark "For a long time, people have speculated that another class of quark ensemble, called the pentaquark, could in theory exist. The pentaquark is, perhaps unsurprisingly, supposed to be made up of five smaller entities—four quarks and an anti-quark. Now, for the first time, researchers working on the LHCb experiment at the Collider have found evidence for their existence."