  Pair-produced long-lived lightest Higgsinos decaying within a few meters in
the LHC detectors are considered. The relatively light nearly-pure Higgsino
states object of this study are those of a supersymmetric minimal model with
gauge-mediated supersymmetry breaking and heavy sfermions and gauginos. The
heavier Higgsinos decay instantly into the lightest one, with very little
activities. Hence, all pair-produced Higgsinos end up as a pair of the lightest
neutral Higgsinos, possibly long lived and decaying into the gravitino and
either the Higgs or the Z boson. If they decay inside the detectors, these
bosons deposit huge energies in the calorimeters. The cross section $\sigma_2$
($\sigma_1$) for the events with two (at least one) decaying-in-flight lightest
Higgsinos is examined. The combination $(\sigma_1)^2/\sigma_2$ is found to be
almost insensitive to the lightest Higgsino lifetime, thereby providing a good
variable to measure its mass. The ratio $\sigma_1/\sigma_2$, instead, mildly
dependent on its mass, can give good information on its lifetime. It is argued
that the lightest Higgsinos in the events are rather slow, as the very
relativistic ones escape away. Thus, the initial state radiations tend to be
soft and a trigger system appropriate for such events is necessary to detect
them.
