Useful material for exotic naturalness signatures.

Twin Higgs and Folded SUSY:  Displaced signatures arising from long-lived hidden glueballs.  See https://arxiv.org/abs/1509.04284 and references therein.

Relaxion references:
    * https://arxiv.org/abs/1504.07551 : the original proposal.  They show that a viable model has these new vector like leptons with their own non-Abelian force that could lead to interesting dark shower like signatures.
    * Relaxion with lower cutoff:  
    * ALPy signatures with Higgs mixing:  https://arxiv.org/abs/1610.02025



Nnaturalness:  
    * Original paper:  https://arxiv.org/abs/1607.06821
    * Reference exploring signature of accessing more and more sectors as a function of cuts, which may be applicable to Nnaturalness:  https://arxiv.org/abs/1706.05008