@article {Aaboud:2018arf,
	title = {{Search for the Production of a Long-Lived Neutral Particle Decaying within the ATLAS Hadronic Calorimeter in Association with a $Z$ Boson from $pp$ Collisions at $\sqrt{s} =$ 13 TeV}},
	journal = {Phys. Rev. Lett.},
	volume = {122},
	number = {15},
	year = {2019},
	pages = {151801},
	doi = {10.1103/PhysRevLett.122.151801},
	author = {Aaboud, Morad and others}
}
