Search for pair-production of strongly-interacting particles decaying to pairs of jets in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV

TL;DR

This paper searches for pair-produced strongly-interacting particles decaying into four jets in proton-antiproton collisions, setting limits on their production cross sections and exploring both resonant and non-resonant scenarios.

Contribution

It introduces a search for non-standard-model strongly-interacting particles decaying to jets, providing the first limits in this context at Tevatron energies.

Findings

Data consistent with standard model predictions

Set upper limits on production cross sections for hypothetical particles

Explored both resonant and non-resonant production mechanisms

Abstract

We present a search for the pair-production of a non-standard-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 non-resonant production via an intermediate gluon as well as resonant production via a distinct non-standard-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 standard model predictions. We report limits on $\sigma(p\bar{p}\rightarrow$ {\it jjjj}$)$ as a function of the masses of the hypothetical intermediate particles. Upper limits on the production cross sections for non-standard-model particles in several resonant and non-resonant processes are also derived.