Search for scalar top quark production in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV

We have searched for direct production of scalar top quarks at the Collider Detector at Fermilab in 88 pb-1 of p anti-p collisions at s**(1/2) = 1.8 TeV. We assume the scalar top quark decays into either a bottom quark and a chargino or a bottom quark, a lepton, and a scalar neutrino. The event signature for both decay scenarios is a lepton, missing transverse energy, and at least two b-quark jets. For a chargino mass of 90 GeV/c2 and scalar neutrino masses of at least 40 GeV/c2, we find no evidence for scalar top production and present upper limits on the production cross section in both decay scenarios.

Note:

13 pages, 4 figures Report-no: FERMILAB-PUB-99/340-E

anti-p p: colliding beams
anti-p p: inclusive reaction
new particle: search for
squark: pair production
squark: top
squark: decay modes
final state: (2bottom lepton)
transverse energy: missing-energy
sparticle: mass
channel cross section: upper limit

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