The Large Hadron Collider is heading for another extended shutdown, a planned pause that will take the world’s most powerful ...

For a while, in the Middle Ages, there was a real craze for trying to turn unassuming lead into pure, gleaming gold. Perhaps those ancient alchemists should have been building a particle collider.

At the world’s most powerful colliders, physicists are finally catching sight of particles that almost never leave a trace, a “ghost” signal that has haunted theory for decades. The detection of these ...