  We discuss collider search strategies of gluinos which are highly degenerate
with the lightest neutralino in mass. This scenario is fairly difficult to
probe with conventional search strategies at colliders, and thus may provide a
hideaway of supersymmetry. Moreover, such a high degeneracy plays an important
role in dark matter physics as the relic abundance of the lightest neutralino
is significantly reduced via coannihilation. In this paper, we discuss ways of
uncovering this scenario with the help of longevity of gluinos; if the mass
difference between the lightest neutralino and gluino is $\lesssim 100$ GeV and
squarks are heavier than gluino, then the decay length of the gluino tends to
be of the order of the detector-size scale. Such gluinos can be explored in the
searches of displaced vertices, disappearing tracks, and anomalously large
energy deposit by (meta)stable massive charged particles. We find that these
searches are complementary to each other, and by combining their results we may
probe a wide range of the compressed gluino region in the LHC experiments.

High Energy Physics - Phenomenology