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Search for narrow t(t)over-bar resonances in p(p)over-bar collisions at root s=1.8 TeV

Abazov, VM; Abbott, B; Abdesselam, A; Abolins, M; Abramov, V; Acharya, BS; Adams, DL; ... DO Collaboration, .; + view all (2004) Search for narrow t(t)over-bar resonances in p(p)over-bar collisions at root s=1.8 TeV. PHYS REV LETT , 92 (22) , Article 221801. 10.1103/PhysRevLett.92.221801. Green open access

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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).

Type: Article
Title: Search for narrow t(t)over-bar resonances in p(p)over-bar collisions at root s=1.8 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.92.221801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.92.221801
Language: English
Additional information: © 2004 The American Physical Society
Keywords: PARTON DISTRIBUTIONS, SYMMETRY-BREAKING, PHYSICS
URI: https://discovery.ucl.ac.uk/id/eprint/1375203
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