https://www.vice.com/en_us/article/7k89gy/large-hadron-collider-beauty-experiment-discovers-3-new-particles

The Large Hadron Collider “beauty experiment” probes the nature of matter and antimatter to answer fundamental questions about the reality we inhabit. Now, scientists working on the experiment have discovered three never-seen-before particles, according to an announcement. 

The beauty experiment, called LHCb, studies the differences between matter and antimatter by searching for subatomic particles called quarks—specifically, beauty quarks, or b quarks, also known as bottom quarks. Quarks can double or triple up to create hadrons (protons and neutrons) or they can combine in greater numbers to create so-called exotic hadrons such as tetraquarks and pentaquarks. Quarks also come in several varieties: up, down, charm, strange, top and bottom, and there are also antiquarks.