Measurement of the tt̅ production cross section in pp̅ collisions at √s=1.96 TeV using lepton + jets events with secondary vertex b -tagging

Authors

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

Date of this Version

3-30-2005

Comments

Published by American Physical Society. Phys. Rev. D 71, 052003 (2005) http://prd.aps.org/. Copyright © 2005 American Physical Society. Permission to use.

Abstract

We present a measurement of the tt̅ production cross section using events with one charged lepton and jets from pp̅ collisions at a center-of-mass energy of 1.96 TeV. In these events, heavy flavor quarks from top quark decay are identified with a secondary vertex tagging algorithm. From 162 pb^-1 of data collected by the Collider Detector at Fermilab, a total of 48 candidate events are selected, where 13.5±1.8 events are expected from background contributions. We measure a tt̅ production cross section of 5.6_-1.1^+1.2 (stat.) _-0.6^+0.9 (syst.) pb.