A search for narrow resonances in the dijet mass spectrum is performed using data corresponding to an integrated luminosity of $2.9{\mathrm{pb}}^{-1}$ collected by the CMS experiment at the Large Hadron Collider. Upper limits at the 95% confidence level are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately for decays into quark-quark, quark-gluon, or gluon-gluon pairs. The data exclude new particles predicted in the following models at the 95% confidence level: string resonances, with mass less than 2.50 TeV, excited quarks, with mass less than 1.58 TeV, and axigluons, colorons, and $E_6$ diquarks, in specific mass intervals. This extends previously published limits on these models.

• Received 1 October 2010
• Publisher error corrected 6 January 2011

DOI:https://doi.org/10.1103/PhysRevLett.105.211801

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© 2010 CERN, for the CMS Collaboration