New Techniques Could Target More Exotic Dark Matter

Where is the dark matter? Scientists who have hunted for decades for the stuff that comprises most of the cosmos’ mass are starting to worry that they are looking in the wrong places. After the latest null results came out this summer from the most sensitive search yet for the particles thought to make up dark matter, a limited theoretical range of masses and other characteristics remains viable for the particles. Now physicists have proposed two new methods to trawl this slim remaining territory, which has been out of reach to experiments so far.