@misc{redi2016photon,
  title={Di-photon resonance and Dark Matter as heavy pions},
  author={Michele Redi and Alessandro Strumia and Andrea Tesi and Elena Vigiani},
  year={2016},
  eprint={1602.07297},
  archivePrefix={arXiv},
  primaryClass={hep-ph},
  url={https://arxiv.org/abs/1602.07297}
}