Search for new particles in the two-jet decay channel with the DØ detector

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Gregory R. Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

6-1-2004

Comments

Published by American Physical Society. Phys. Rev. D 69, 111101(R) (2004). http://prd.aps.org. Copyright © 2004 American Physical Society. Used by permission.

Abstract

We present the results of a search for the production of new particles decaying into two jets in p̅p collisions at √s =1.8 TeV, using the DØ 1992–1995 data set corresponding to 109 pb^-1. We exclude at the 95% confidence level the production of excited quarks (q^*) with masses below 775 GeV/c², the most restrictive limit to date. We also exclude standard-model-like W′ (Z′) bosons with masses between 300 and 800 GeV/c² (400 and 640 GeV/c²). A W8 boson with mass ,786 GeV/c² has been excluded by previous measurements, and our lower limit is therefore the most stringent to date.