Top quark mass measurement from dilepton events at CDF II with the matrix-element method Academic Article uri icon


  • We describe a measurement of the top quark mass using events with two charged leptons collected by the CDF II detector from pp̄ collisions with s=1.96TeV at the Fermilab Tevatron. The likelihood in top quark mass is calculated for each event by convoluting the leading order matrix element describing qq̄→tt̄→blνlb̄l′νl′ with detector resolution functions. The presence of background events in the data sample is modeled using similar calculations involving the matrix elements for major background processes. In a data sample with integrated luminosity of 340pb-1, we observe 33 candidate events and measure Mtop=165.2±6.1(stat.) ±3.4(syst.)GeV/c2. This measurement represents the first application of this method to events with two charged leptons and is the most precise single measurement of the top quark mass in this channel. © 2006 The American Physical Society.

author list (cited authors)

  • Abulencia, A., Acosta, D., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., ... Zucchelli, S.

citation count

  • 24

publication date

  • August 2006