Search for the Scalar Top Quark in pp̅ Collisions at √s = 1.8 TeV

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Gregory R. Snow, University of Nebraska-LincolnFollow
DO Collaboration

Date of this Version

4-29-2002

Comments

Published by American Physical Society. Phys. Rev. Lett. VOLUME 88, NUMBER 17 (2002). http://prl.aps.org. Copyright © 2002 American Physical Society. Used by permission.

Abstract

We have performed a search for scalar top quark (stop) pair production in the inclusive electronmuon- missing transverse energy final state, using a sample of pp̅ events corresponding to 108.3 pb^-1 of data collected with the D0 detector at Fermilab. The search is done in the framework of the minimal supersymmetric standard model assuming that the sneutrino is the lightest supersymmetric particle. For the dominant decays of the lightest stop, t̅→ b χ₁⁺ and t̅→bℓν, no evidence for signal is found. We derive cross-section limits as a function of stop (t̅), chargino (χ₁⁺), and sneutrino (ν) masses.