Search for Pair Production of Strongly Interacting Particles Decaying to Pairs of Jets in $p\overline{p}$ Collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$

Search for Pair Production of Strongly Interacting Particles Decaying to Pairs of Jets in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$

T. Aaltonen et al. (CDF Collaboration)

Phys. Rev. Lett. 111, 031802 – Published 18 July 2013

Abstract

We present a search for the pair production of a narrow nonstandard-model strongly interacting particle that decays to a pair of quarks or gluons, leading to a final state with four hadronic jets. We consider both nonresonant production via an intermediate gluon as well as resonant production via a distinct nonstandard-model intermediate strongly interacting particle. We use data collected by the CDF experiment in proton-antiproton collisions at $\sqrt{s} = 1.96 TeV$ corresponding to an integrated luminosity of $6.6 {fb}^{- 1}$ . We find the data to be consistent with nonresonant production. We report limits on $σ (p \bar{p} \to j j j j)$ as a function of the masses of the hypothetical intermediate particles. Upper limits on the production cross sections for nonstandard-model particles in several resonant and nonresonant processes are also derived.