For decades, physicists have been working on the theory that dark matter is light and therefore interacts weakly with ordinary matter. This means that the particles are capable of being produced in colliders. This theory’s dark particles are called weakly-interacting massive particles (WIMPs), and they are theorized to have been created in an inconceivably large number shortly after the birth of the universe 13.7 billion years ago.
“But since no experiments have ever seen even a trace of a WIMP, it could be that we should look for a heavier dark particle that interacts only by gravity and thus would be impossible to detect directly,” says Martin Sloth.
Sloth and his colleagues call their version of such a heavy particle a PIDM particle (Planckian Interacting Dark Matter). More. Abstract (public access) (Mathias Garny, McCullen Sandora, Martin S. Sloth. Planckian Interacting Massive Particles as Dark Matter. Physical Review Letters, 2016; 116 (10) DOI: 10.1103/PhysRevLett.116.101302)
See also: How do dark energy and dark matter relate to ID?
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