We report a search for the anomalous production of events with
multiple charged leptons in p anti-p collisions at s**(1/2) = 1.96 TeV using a
data sample corresponding to an integrated luminosity of 346 pb-1 collected
by the CDF II detector at the Fermilab Tevatron. The search is divided into
thre+ e-lepton and four-or-more-lepton data samples. We observe six events in
the thre+ e-lepton sample and zero events in the > 4-lepton sample. Both
numbers of events are consistent with standard model background
expectations. Within the framework of an R-parity violating supergravity
model, the results are interpreted as mass limits on the lightest neutralino
(chi-bar0_1) and chargino (chi-bar+/-_1) particles. For one particular
choice of model parameters, the limits are M(chi-bar0_1)>110 GeV/c2 and
M(chi(b)ar+/-_1)>203 GeV/c2 at 95% confidence level; the variation of these
mass limits with model parameters is presented.
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Updated: Tuesday, 2007 April 03 16:05:22 CDT automatically from input from Carol Picciolo