We searched for scalar bottom quarks in 156 pb-1 of p anti-p
collisions at s**(1/2) = 1.96 TeV recorded by the CDF II experiment at the
Tevatron. Scalar bottom quarks can be produced from gluino decays in
R-parity conserving models of supersymmetry when the mass of the gluino
exceeds that of the scalar bottom quark. Then, a scalar bottom quark can
decay into a bottom quark and a neutralino. To search for this scenario, we
investigated events with large missing transverse energy and at least three
jets, two or more of which were identified as containing a secondary vertex
from the hadronization of b quarks. We found four candidate events, where
2.6 +/- 0.7 are expected from standard model processes, and placed 95%
confidence level lower limits on gluino and scalar bottom quark masses of up
to 280 and 240 GeV/c2, respectively.
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Updated: Wednesday, 2006 December 27 11:04:55 CST automatically from input from Carol Picciolo