Search for pair-produced dijet resonances in four-jet final states in pp collisions at sqrt(s) = 7 TeV

TL;DR

This paper reports a search for pair-produced dijet resonances in four-jet events at 7 TeV proton-proton collisions, setting limits on production cross sections and excluding certain coloron masses.

Contribution

It introduces a novel search strategy for pair-produced dijet resonances and provides the first limits in this specific mass range using CMS data.

Findings

No resonances observed in the dijet mass spectrum.

Upper limits on cross sections range from 0.22 to 0.005 pb.

Colorons with masses between 250 and 740 GeV are excluded.

Abstract

A search for the pair production of a heavy, narrow resonance decaying into two jets has been performed using events collected in sqrt(s) = 7 TeV pp collisions with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 inverse femtobarns. Events are selected with at least four jets and two dijet combinations with similar dijet mass. No resonances are found in the dijet mass spectrum. The upper limit at 95% confidence level on the product of the resonance pair production cross section, the branching fractions into dijets, and the acceptance varies from 0.22 to 0.005 pb, for resonance masses between 250 and 1200 GeV. Pair-produced colorons decaying into q q' are excluded for coloron masses between 250 and 740 GeV.