Dark matter front runner squares up to new challengers

Ananthaswamy, Anil
May 2008
New Scientist;5/31/2008, Vol. 198 Issue 2658, p18
The article reports that physicists have reassessed the reasons for making the hypothetical neutralino particle the best candidate to explain dark matter, which is thought to compose 90% of the universe's mass. A radical rethinking of theories on dark matter can be prompted by the discovery that hidden sectors of the universe can contain particles that are different from the neutralino.


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