Neutralino spectrum in top-down models of UHECR

  title={Neutralino spectrum in top-down models of UHECR},
  author={Alejandro Ibarra and Ram{\'o}n Toldr{\`a}},
  journal={Journal of High Energy Physics},
We calculate the cosmic ray spectrum of ultra high energy neutralinos that one should expect provided that the observed ultra high energy cosmic rays are produced by the decay of superheavy particles X, MX > 1012 GeV, in supersymmetric models. Our calculation uses an extended DGLAP formalism. Forthcoming cosmic ray observatories should be able to detect these neutralinos. 
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