2003/07/29 by V. M. Abazov, B. Abbott, A. Abdesselam +97
Physics and Astronomy · #High-Energy Particle Collisions Research #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.92.221801
published as Phys.Rev.Lett.92:221801,2004 · 7 pages, 2 figures, 2 tables
arxiv created 2003/07/29 · openalex publication_date 2003/07/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 √(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 MX. These limits are used to exclude the existence of a leptophobic topcolor particle with mass MX < 560 GeV/c2 and width ΓX = 0.012 MX.