These hypothetical particles are known as cold dark matter because they move so slowly.

A Tachyon is any hypothetical particle that could travel faster than the speed of light.

An electron would turn into a hypothetical particle called a selectron.

Or can this be achieved using a hypothetical particle?

Tachyons, being hypothetical particles that move faster than light, are supposed to go back in time.

The hypothetical particle or field thought to be responsible for inflation is called the inflaton.

At the very least, some physicists suggest, two tiny new hypothetical particles might need to join the current roster.

Whatever it is, they can add some more hypothetical particles and wait 20 years for accelerators to frown at them.

Other hypothetical particles might leave a missing energy signature, and some searches for new phenomena are based on that.

A hypothetical particle with imaginary rest mass would always travel faster than the speed of light.