Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting

Abstract

We measure the top quark mass in dilepton final states of t (t) over bar events in p (p) over bar collisions at root s = 1.96 TeV, using data corresponding to an integrated luminosity of 9.7 fb(-1) at the Fermilab Tevatron Collider. The analysis features a comprehensive optimization of the neutrino weighting method to minimize the statistical uncertainties.

We also improve the calibration of jet energies using the calibration determined in t (t) over bar -> lepton + jets events, which reduces the otherwise limiting systematic uncertainty from the jet energy scale. The measured top quark mass is m(t) = 173.32 +/- 1.36(stat) +/- 0.85(syst) GeV. (C) 2015 The Authors.

Published by Elsevier B.V.

Keywords

• production cross-section
• model higgs-boson
• standard model
• (ms)over-bar masses
• hadron colliders
• atlas detector
• pp collisions
• identification
• pole
• tev