Theories of quantum mechanics predict that some particles can exist in superpositions, which essentially means that they can ...

In recent years, a curious hypothetical particle called the axion, invented to address challenging problems with the strong nuclear force, has emerged as a leading candidate to explain dark matter.

A major physics experiment has uncovered evidence for a strange new form of matter, where a fleeting particle gets trapped ...

New research suggests a particle inside an atom can lose mass, offering a fresh look at how matter works at the smallest ...

According to our current understanding of the universe, equal amounts of matter and antimatter should have been produced in the Big Bang, then both annihilated. However, the universe is dominated by ...

A study by Dartmouth researchers proposes a new theory about the origin of dark matter, the mysterious and invisible substance thought to give the universe its shape and structure. They say the ...

UC Santa Cruz physicist Stefano Profumo has put forward two imaginative but scientifically grounded theories that may help solve one of the biggest mysteries in physics: the origin of dark matter. In ...

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 team of physicists has proposed a never-before-seen particle existing in a warped fifth dimension that could connect ...

Suggested Citation: "Appendix: Glossary, Abbreviations, and Acronyms." National Research Council. 1998. Elementary-Particle Physics: Revealing the Secrets of Energy ...