Search for a heavy resonance decaying into a Z+jet final state in p-pbar collisions at sqrt(s) = 1.96 TeV using the D0 detector

TL;DR

This paper reports a search for heavy resonances decaying into Z+jet final states in proton-antiproton collisions at 1.96 TeV, setting upper limits on production cross sections without observing a signal.

Contribution

First search for heavy Z+jet resonances at Tevatron energies, providing constraints within excited quark production models.

Findings

No resonance signal observed in data.

Upper limits set on cross section times branching fraction.

Results constrain models of excited quark production.

Abstract

We have searched for a heavy resonance decaying into a Z+jet final state in p-pbar collisions at a center of mass energy of 1.96 TeV at the Fermilab Tevatron collider using the D0 detector. No indication for such a resonance was found in a data sample corresponding to an integrated luminosity of 370/pb. We set upper limits on the cross section times branching fraction for heavy resonance production at the 95% C.L. as a function of the resonance mass and width. The limits are interpreted within the framework of a specific model of excited quark production.