Measurement of the top quark mass in the dilepton channel

Authors

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

Date of this Version

October 2007

Comments

Published in Physics Letters B 655:1–2 (October 25, 2007), pp. 7-14; doi:10.1016/j.physletb.2007.08.074 Copyright © 2007 Elsevier B.V. Used by permission. http://www.sciencedirect.com/science/journal/03702693

Abstract

We present a measurement of the top quark mass in the dilepton channel based on approximately 370 pb^-1 of data collected by the DØ experiment during Run II of the Fermilab Tevatron collider. We employ two different methods to extract the top quark mass. We show that both methods yield consistent results using ensemble tests of events generated with the DØ Monte Carlo simulation. We combine the results from the two methods to obtain a top quark mass m_t = 178.1 ± 8.2 GeV. The statistical uncertainty is 6.7 GeV and the systematic uncertainty is 4.8 GeV.