IT’S the top contender for dark matter, the stuff thought to make up 90 per cent of the mass of the universe. Yet is the hypothetical neutralino particle really the best candidate? By reassessing the reasons for making the neutralino the front runner, physicists have opened up the field to many other dark matter candidates.
“Hidden sectors of the universe may contain kinds of dark matter very different to the top contender, the neutralino”
The neutralino has captivated cosmologists because it wasn’t dreamed up to explain dark matter. Rather, it popped out of theories trying to address problems in the…
