We apply the perturbative grand unification due to renormalization to distinguish TeV-scale relics of supersymmetric SO(10) scenarios. With rational theoretical constraints taken into account, we find that for the breaking pattern of either SU(5) or Pati-Salam, only extra matter 16 supermultiplet of SO(10) can appear at the TeV scale, apart from the MSSM spectrum.
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