Search for Gluino-Mediated Sbottom Production in p-pbar Collisions at sqrt(s)=1.96 TeV

TL;DR

This paper reports a search for gluino-mediated sbottom production in proton-antiproton collisions at 1.96 TeV, finding no evidence and setting limits on gluino production cross sections.

Contribution

It presents the first search for gluino-mediated sbottom production at the Tevatron with 2.5 fb-1 of data, establishing new constraints on gluino masses.

Findings

No evidence for gluino decay to sbottom quarks.

Gluino-pair-production cross section constrained to less than 40 fb at 350 GeV.

Results consistent with standard model predictions.

Abstract

We report on a search for the supersymmetric partner of the bottom quark produced from gluino decays in data from 2.5 fb-1 of integrated luminosity collected by the Collider Detector at Fermilab at sqrt(s)=1.96 TeV. Candidate events are selected requiring two or more jets and large missing transverse energy. At least two of the jets are required to be tagged as originating from a b quark to enhance the sensitivity. The results are in good agreement with the prediction of the standard model processes, giving no evidence for gluino decay to sbottom quarks. This result constrains the gluino-pair-production cross section to be less than 40fb at 95% credibility level for a gluino mass of 350 GeV.