The Standard Model of Particle Physics is the collection of discoveries and theories that describe the smallest units of matter and the interactions between energy and matter. According to this model, ...

The particle in question, known as a sterile neutrino, was supposed to only interact with gravity and have zero interactions with matter.

Physicists often ponder in an unusual way: they use one unsolved problem as a hypothetic solution to another, in the hope of resolving both. The strong CP problem is the perfect example. In the ...

The hypothetical faster-than-light particle known as the tachyon may marry with the special theory of relativity, according to a team of physicists, making its existence more plausible. Tachyons are a ...