Search for Gluinos and Squarks Using Like-Sign Dileptons in pp̅ Collisions at √s= 1.8 TeV

Authors

T. Affolder, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

12-17-2001

Comments

Published by American Physical Society. Phys. Rev. Lett. 87, 251803 (2001). http://prl.aps.org. Copyright © 2001 American Physical Society. Permission to use.

Abstract

We present results of the first search for like-sign dilepton (e^±e^{±, e± μ±, μ± μ±) events associated with multijets and large missing energy using 106 pb-1 of data in pp̅ collisions at √s= 1.8 TeV collected during 1992–1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos (g̃) and squarks (q̃) in a constrained framework of the minimal supersymmetric standard model. At tanβ =2 and μ = -800 GeV/c2, we set 95% confidence level limits of M_g̃ > 221 GeV/c2 for M_g̃ –̴ M_q̃, and M_g̃ . 168 GeV/c2for M_q̃>>M_g̃ >, both with small variation as a function of μ.}