Abstract
We present a preliminary result on a search for narrow-width resonances that decay intot-t pairs using 130 pb−1 of lepton + jets data inp-p collisions at √s = 1.8 TeV. No significant deviation is observed from prediction of the standard model, and upper limits at 95% confidence on the product of the production cross-section and its branching fraction tot-t are presented for narrow-width resonances, as a function of resonance massMx. We also use these limits to exclude the existence of a leptophobic top-color particle,X, withM x < 560 GeV/c2 and width Γx = 0.012M x .
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