Search for narrow $t\bar t$ resonances in $p\barp$ collisions at $\sqrt s$ = 1.8 TeV

Abstract : A search for narrow resonances that decay into t-tbar pairs has been performed using 130 pb^{-1} of data in the lepton+jets channel collected in p-pbar collisions at \sqrt{s} = 1.8 TeV. There is no significant deviation observed from the standard model, and upper limits at the 95 % confidence level on the product of the production cross section and branching fraction to t-tbar are presented for narrow resonances as a function of the resonance mass M_X. These limits are used to exclude the existence of a leptophobic topcolor particle with mass M_X < 560 GeV/c^2 and width \Gamma_X = 0.012 M_X.
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Submitted on : Monday, June 7, 2004 - 10:31:28 AM
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• HAL Id : in2p3-00021886, version 1

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V.M. Abazov, B. Abbott, Abdelmalek Abdesselam, M. Abolins, V. Abramov, et al.. Search for narrow $t\bar t$ resonances in $p\barp$ collisions at $\sqrt s$ = 1.8 TeV. Physical Review Letters, American Physical Society, 2004, 92, 221801-(6 p.). ⟨in2p3-00021886⟩

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