Light asymmetric dark matter from new strong dynamics
  A ~5 GeV `dark baryon' with a cosmic asymmetry similar to that of baryons is a natural candidate for the dark matter. We study the possibility of generating such a state through dynamical electroweak symmetry breaking, and show that it can share the relic baryon asymmetry via sphaleron interactions, even though it has no electroweak interactions. The scattering cross-section on nucleons, estimated in analogy to QCD, is within reach of underground direct detection experiments. 
Mads T. Frandsen, Subir Sarkar and Kai Schmidt-Hoberg (Oxford)
hep-ph astro-ph.CO