Search for dilepton signatures from minimal low-energy supergravity in pp̅ collisions at √s = 1.8 TeV

Authors

B. Abbott, New York University, New York, New York 10003
Gregory R. Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

4-5-2001

Comments

Published by American Physical Society. Phys. Rev. D 63, 091102~R! (2001). http://prd.aps.org. Copyright © 2001 American Physical Society. Used by permission.

Abstract

We report on a search for supersymmetry using the DØ detector. The 1994–1996 data sample of √s =1.8 TeV pp̅ collisions was analyzed for events containing two leptons (e or μ), two or more jets, and missing transverse energy. Assuming the minimal supergravity model, with A₀=0 and μ < 0, various thresholds were employed to optimize the search. No events were found beyond expectation from the background. We set a lower limit at the 95% C.L. of 255 GeV/c² for equal mass squarks and gluinos for tan β =2, and present exclusion contours in the (m₀ , m_1/2) plane for tan β =2–6.