Search for R-Parity Violating Supersymmetry Using Like-Sign Dielectrons in pp̅ Collisions at √s = 1.8 TeV

Authors

F. Abe, National Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki 305, Japan
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

9-13-1999

Comments

Published by American Physical Society. Phys. Rev. Lett. 83, 2133 (1999). http://prl.aps.org. Copyright © 1999 American Physical Society. Permission to use.

Abstract

We present a search for like-sign dielectron plus multijet events using 107 pb^-1 of data in pp̅ collisions at √s =1.8 TeV collected in 1992–1995 by the CDF experiment. Finding no events that pass our selection, we set σ X BR limits on two supersymmetric 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 nonzero λ′₁₂₁ coupling. We compare our results to the next-to-leading order calculations for gluino and squark production cross sections and set lower limits on M (g̃), M (t̃₁), and M (q̃).