Search for R-parity Violating Supersymmetry using Like-Sign Dielectrons in \ppbar Collisions at $\sqrt{s} = 1.8$ TeV

TL;DR

This paper searches for signs of R-parity violating supersymmetry in like-sign dielectron events in proton-antiproton collisions, setting new limits on particle masses due to the absence of observed signals.

Contribution

First search for R-parity violating SUSY using like-sign dielectron events at Tevatron energies, establishing new mass limits based on null results.

Findings

No like-sign dielectron events observed.

Set lower mass limits on gluino, stop, and squark.

Provided cross section limits for SUSY processes.

Abstract

We present a search for like-sign dielectron plus multijet events using 107 pb-1 of data in \ppbar collisions at $\sqrt{s} = 1.8$ TeV collected in 1992-95 by the CDF experiment. Finding no events that pass our selection, we set $\sigma\cdot Br$ limits on two SUSY processes that can produce this experimental signature: gluino-gluino or squark-antisquark production with R-parity violating decays of the charm squark or lightest neutralino via a non-zero lambda'_121 coupling. We compare our results to NLO calculations for gluino and squark production cross sections and set lower limits on M(gluino), M(stop1), and M(squark).