Search for mSUGRA in single-electron events with jets and large missing transverse energy in ppbar collisions at center of mass energy of 1.8 TeV

TL;DR

This paper reports a search for minimal supergravity (mSUGRA) signatures in proton-antiproton collision data, focusing on single-electron events with jets and missing energy, finding no evidence of new physics and setting new parameter limits.

Contribution

First search for mSUGRA in this specific final state using Tevatron data, establishing new constraints on model parameters.

Findings

No excess events observed over background expectations.

Set new limits on mSUGRA model parameters.

Analyzed 92.7 pb^(-1) of data from Fermilab Tevatron.

Abstract

We describe a search for evidence of minimal supergravity (mSUGRA) in 92.7 pb^(-1) of data collected with the D{\O}detector at the Fermilab Tevatron ppbar collider at center of mass energy of 1.8 TeV. Events with a single electron, four or more jets, and large missing transverse energy were used in this search. The major backgrounds are from W+jets, misidentified multijet, ttbar, and WW production. We observe no excess above the expected number of background events in our data. A new limit in terms of mSUGRA model parameters is obtained.