  Models where dark matter is a part of an electroweak multiplet feature
charged particles with macroscopic lifetimes due to the charged-neutral mass
split of the order of pion mass. At the Large Hadron Collider, the ATLAS and
CMS experiments will identify these charged particles as disappearing tracks,
since they decay into a massive invisible dark matter candidate and a very soft
charged Standard-Model particle which fails to pass the reconstruction
requirements. While ATLAS and CMS have focused on the supersymmetric versions
of these scenarios, we have performed here the reinterpretation of the latest
ATLAS disappearing track search for a suite of dark matter multiplets with
different spins and electroweak quantum numbers. More concretely, we consider
the cases of the inert Two Higgs Doublet model (i2HDM), of Minimal Fermion Dark
Matter (MFDM) and of Vector Triplet Dark Matter (VTDM). Our procedure is
validated by using the same wino and higgsino benchmark models employed by the
ATLAS collaboration. We have found that with the disappearing track signature
one can probe a vast portion of the parameter space, well beyond the reach of
prompt missing energy searches (notably mono-jets). We provide tables with the
upper-limits on the cross-section upper limits, and efficiencies in the
lifetime - dark matter mass plane for all the models under consideration.
Moreover we make the recasting code employed here publicly available, as part
of the LLP Recasting Repository.
