title: Top Quark Mass Calibration for Monte Carlo Event Generators.
abstract: The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator m_{t}^{MC}. Because of hadronization and parton-shower dynamics, relating m_{t}^{MC} to a field theory mass is difficult. We present a calibration procedure to determine this relation using hadron level QCD predictions for observables with kinematic mass sensitivity. Fitting e^{+}e^{-} 2-jettiness calculations at next-to-leading-logarithmic and next-to-next-to-leading-logarithmic order to pythia 8.205, m_{t}^{MC} differs from the pole mass by 900 and 600 MeV, respectively, and agrees with the MSR mass within uncertainties, m_{t}^{MC}≃m_{t,1  GeV}^{MSR}.
authors.affiliation: II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany.
authors.forename: Mathias
authors.initials: M
authors.lastname: Butenschoen
authors.affiliation: University of Vienna, Faculty of Physics, Boltzmanngasse 5, A-1090 Wien, Austria.
authors.forename: Bahman
authors.initials: B
authors.lastname: Dehnadi
authors.affiliation: University of Vienna, Faculty of Physics, Boltzmanngasse 5, A-1090 Wien, Austria.|Erwin Schrödinger International Institute for Mathematical Physics, University of Vienna, Boltzmanngasse 9, A-1090 Wien, Austria.
authors.forename: André H
authors.initials: AH
authors.lastname: Hoang
authors.affiliation: Departamento de Física Teórica and Instituto de Física Teórica, IFT-UAM/CSIC, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Vicent
authors.initials: V
authors.lastname: Mateu
authors.affiliation: University of Vienna, Faculty of Physics, Boltzmanngasse 5, A-1090 Wien, Austria.
authors.forename: Moritz
authors.initials: M
authors.lastname: Preisser
authors.affiliation: Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Iain W
authors.initials: IW
authors.lastname: Stewart