Search for squarks and gluinos in events with jets and missing transverse energy using 2.1 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV

TL;DR

This study used 2.1 fb-1 of data from the Fermilab Tevatron to search for squarks and gluinos in events with jets and missing energy, setting new lower mass limits.

Contribution

First search for squarks and gluinos at Tevatron with this dataset, improving previous mass limits within a specific supersymmetry framework.

Findings

No evidence of squark or gluino production was observed.

Lower mass limits of 379 GeV for squarks and 308 GeV for gluinos were established.

Limits improved by 54 GeV and 67 GeV over previous results.

Abstract

A data sample corresponding to an integrated luminosity of 2.1 fb-1 collected by the D0 detector at the Fermilab Tevatron Collider was analyzed to search for squarks and gluinos produced in ppbar collisions at a center-of-mass energy of 1.96 TeV. No evidence for the production of such particles was observed in topologies involving jets and missing transverse energy, and 95% C.L. lower limits of 379 GeV and 308 GeV were set on the squark and gluino masses, respectively, within the framework of minimal supergravity with tan(beta)=3, A0=0, and mu<0. The corresponding previous limits are improved by 54 GeV and 67 GeV.