Measurement of the tt̅ production cross section in pp̅ collisions at √s = 1.96 TeV using kinematic characteristics of lepton + jets events

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Gregory R. Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

11-20-2007

Comments

Published by American Physical Society. Phys. Rev. D 76, 092007 (2007). http://prd.aps.org. Copyright © 2007 American Physical Society. Used by permission.

Abstract

We present a measurement of the top quark pair production cross section in pp̅ collisions at √s = 1.96 TeV utilizing 425 pb^-1 of data collected with the D0 detector at the Fermilab Tevatron Collider. We consider the final state of the top quark pair containing one high-p_T electron or muon and at least four jets. We exploit specific kinematic features of tt̅ events to extract the cross section. For a top quark mass of 175 GeV, we measure σ _tt̅ = 6.4_-1.2^+1.3(stat) ± 0.7(syst) ± 0.4(lum) pb, in good agreement with the standard model prediction.