The new baryon “Xi-cc-plus” decays into other particles almost instantly, but its existence could paint a clearer picture on ...

The Large Hadron Collider has discovered a new particle, the 80th identified so far by the world's most powerful particle ...

A subatomic particle long predicted by theorists has finally been observed, ending a decades-long wait in physics. Named Ξcc+ ...

When fundamental particles are heavier or lighter than expected, physicists' understanding of the universe can tip into the ...

Two recent studies by Professor Stefano Profumo at the University of California, Santa Cruz, propose theories that attempt to answer one of the most fundamental open questions in modern physics: What ...

A new type of particle has been discovered by scientists at CERN using data from last year's run of the Large Hadron Collider (LHC). The particle opens the door to a "new frontier" of physics, ...

Our best model of particle physics explains only about 5 percent of the universe. The Standard Model is a thing of beauty. It is the most rigorous theory of particle physics, incredibly precise and ...

Matter is a lush tapestry, woven from a complex assortment of threads. Diverse subatomic particles weave together to fabricate the universe we inhabit. But a century ago, people believed that matter ...

The Standard Model of particle physics does a decent enough job of explaining the universe, but it still has some holes in it. Now, a new study outlines how one hypothetical particle, the axion, may ...

Suggested Citation: "3 Symmetries, Forces, and Particles." National Research Council. 1998. Elementary-Particle Physics: Revealing the Secrets of Energy and Matter. Washington, DC: The National ...