Lightest Visible-Sector Supersymmetric Particle is Likely to be Unstable.

@article{Acharya2016LightestVS,
  title={Lightest Visible-Sector Supersymmetric Particle is Likely to be Unstable.},
  author={Bobby Samir Acharya and Sebastian A. R. Ellis and Gordon L. Kane and Brent D. Nelson and Malcolm Perry},
  journal={Physical review letters},
  year={2016},
  volume={117 18},
  pages={
          181802
        }
}
We argue, based on typical properties of known solutions of string or M theory, that the lightest supersymmetric particle of the visible sector is likely to be unstable. In other words, dark matter is probably not a particle with standard model quantum numbers, such as a weakly interacting massive particle. The argument is simple and based on the typical occurrence of (a) hidden sectors, (b) interactions between the standard model (visible) sector and these hidden sectors, and (c) the lack of… 

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