Search for Narrow tt¯ Resonances in pp¯ Collisions at s=1.8   TeV

V. M. Abazov et al. (DØ Collaboration)
Phys. Rev. Lett. 92, 221801 – Published 3 June 2004

Abstract

A search for narrow resonances that decay into tt¯ pairs has been performed using 130   pb1 of data in the lepton + jets channel collected by the DØ detector in pp¯ collisions at s=1.8   TeV. There is no significant deviation observed from the standard-model predictions at a top-quark mass of 175   GeV/c2. We therefore present upper limits at the 95% confidence level on the product of the production cross section and branching fraction to tt¯ for narrow resonances as a function of the resonance mass MX. These limits are used to exclude the existence of a leptophobic top-color particle with mass MX<560   GeV/c2, using a theoretical cross section for a width ΓX=0.012MX.

  • Figure
  • Figure
  • Received 29 July 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.221801

©2004 American Physical Society

Authors & Affiliations

Click to Expand

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 92, Iss. 22 — 4 June 2004

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×