Abstract:
We report on a search for anomalous production of events
with at least two charged, isolated, like-sign leptons, each
with pT>11 GeV/c using a 107 pb-1 sample of 1.8 TeV
pp-bar collisions collected by the CDF detector. We define
a signal region containing low background from standard
model processes. To avoid bias, we fix the final cuts
before examining the event yield in the signal region
using control regions to test the Monte Carlo predictions.
We observe no events in the signal region, consistent with
an expectation of 0.63+0.84-0.07 events. We present 95%
confidence level limits on new physics processes in both a
signature-based context as well as within a representative
minimal supergravity (tan( beta =3) model.
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