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Search for narrow t(t)over-bar resonances in p(p)over-bar collisions at root s=1.8 TeV
Baringer, Philip S. Bean, Alice Coppage, Don Hebert, C.
Baringer, Philip S.
Bean, Alice
Coppage, Don
Hebert, C.
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Abstract
A search for narrow resonances that decay into t (t) over bar pairs has been performed using 130 pb(-1) of data in the lepton + jets channel collected by the DO detector in p (p) over bar collisions at roots=1.8 TeV. There is no significant deviation observed from the standard-model predictions at a top-quark mass of 175 GeV/c(2). We therefore present upper limits at the 95% confidence level on the product of the production cross section and branching fraction to t (t) over bar for narrow resonances as a function of the resonance mass M-X. These limits are used to exclude the existence of a leptophobic top-color particle with mass M-X<560 GeV/c(2), using a theoretical cross section for a width Gamma(X)=0.012M(X).
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2004-06
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AMERICAN PHYSICAL SOC
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Abazov, VM; Abbott, B, et al. Search for narrow t(t)over-bar resonances in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS. June 2004. 92(22)