Search for Scalar Top Quark Production 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

Document Type

Article

Date of this Version

6-5-2000

Comments

Published by American Physical Society. Phys. Rev. Lett. 84, 5273 (2000). http://prl.aps.org. Copyright © 2000 American Physical Society. Permission to use.

Abstract

We have searched for direct production of scalar top quarks at the Collider Detector at Fermilab in 88 pb^-1 of pp collisions at √s =1.8 TeV. We assume the scalar top quark decays into either a bottom quark and a chargino or a bottom quark, a lepton, and a scalar neutrino. The event signature for both decay scenarios is a lepton, missing transverse energy, and at least two b-quark jets. For a chargino mass of 90 GeV/c² and scalar neutrino masses of at least 40 GeV/c², we find no evidence for scalar top production and present upper limits on the production cross section in both decay scenarios.