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I Dark Matter Decoupling from Plasma

  1. Mar 28, 2017 #1
    Hello,

    I have been reading about how Dark Matter particles might possibly be made up of the lightest sterile right handed neutrino.

    I was wondering, why exactly does the dark matter particle have to decouple from the plasma when it is formed?
     
  2. jcsd
  3. Mar 28, 2017 #2

    mfb

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    2016 Award

    Staff: Mentor

    All dark matter candidates had to stop interacting (significantly) with regular matter at some point, otherwise they would not be dark.
     
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