  An updated search is performed for gluino, top squark, or bottom squark
R-hadrons that have come to rest within the ATLAS calorimeter, and decay at
some later time to hadronic jets and a neutralino, using 5.0 and 22.9 fb-1 of
pp collisions at 7 and 8 TeV, respectively. Candidate decay events are
triggered in selected empty bunch crossings of the LHC in order to remove pp
collision backgrounds. Selections based on jet shape and muon-system activity
are applied to discriminate signal events from cosmic ray and beam-halo muon
backgrounds. In the absence of an excess of events, improved limits are set on
gluino, stop, and sbottom masses for different decays, lifetimes, and
neutralino masses. With a neutralino of mass 100 GeV, the analysis excludes
gluinos with mass below 832 GeV (with an expected lower limit of 731 GeV), for
a gluino lifetime between 10 microseconds and 1000 s in the generic R-hadron
model with equal branching ratios for decays to qqbar+neutralino and
gluon+neutralino. Under the same assumptions for the neutralino mass and squark
lifetime, top squarks and bottom squarks in the Regge R-hadron model are
excluded with masses below 379 and 344 GeV, respectively.
