Measurement of the t t̅ production cross section in p p̅ collisions at sqrt(s)=1.96 TeV using lepton plus jets events with semileptonic B decays to muons

Authors

• Darin Acosta, University of FloridaFollow
• Kenneth A. Bloom, University of Nebraska-LincolnFollow
• Collider Detector at Fermilab Collaboration

Document Type

Article

Date of this Version

8-9-2005

Comments

Published by American Physical Society. Copyright © 2005 American Physical Society. Permission to use. Phys. Rev. D 72, 032002 (2005). http://prd.aps.org/.

Abstract

We present a measurement of the t[overline t] production cross section using 194 pb^-1 of CDF II data using events with a high transverse momentum electron or muon, three or more jets, and missing transverse energy. The measurement assumes 100% t→Wb branching fraction. Events consistent with tt̅ decay are found by identifying jets containing heavy-flavor semileptonic decays to muons. The dominant backgrounds are evaluated directly from the data. Based on 20 candidate events and an expected background of 9.5±1.1 events, we measure a production cross section of 5.3±3.3_-1.0^+1.3 pb, in agreement with the standard model.