Top Quark Mass Measurement from Dilepton Events at CDF II with the Matrix-Element Method

Abstract

We describe a measurement of the top quark mass using events with two charged leptons collected by the CDF II detector from $p\bar{p}$ collisions with $\sqrt{s}=1.96$ TeV at the Fermilab Tevatron. The likelihood in top mass is calculated for each event by convoluting the leading order matrix element describing $q\bar{q}\to t\bar{t}\to b\ell {\nu }_{\ell }\bar{b}{\ell }^{\prime }{\nu }_{{\ell }^{\prime }}$ 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 340 pb${}^{-1}$, we observe 33 candidate events and measure $M_{top}=165.2\pm 6.1(\text{stat.})\pm 3.4(\text{syst.})\mathrm{GeV}/c^2.$ 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.

21 pages, 14 figures

References in corpus (3)

• Top Quark Mass Measurement Using the Template Method in the Lepton + Jets Channel at CDF II
• Top Quark Mass Measurement from Dilepton Events at CDF II
• Precision Top Quark Mass Measurement in the Lepton + Jets Topology in ppbar Collisions at sqrt(s) = 1.96 TeV

Cited by in corpus (27)

• Evidence for production of single top quarks
• Measurement of the top quark mass with dilepton events selected using neuroevolution at CDF
• A Double Take on New Physics in Double Higgs Production
• The Matrix Element Method and QCD Radiation
• Unravelling $t\bar{t}h$ via the matrix element method
• Measurement of the top quark mass in the lepton+jets final state with the matrix element method
• Extending the Matrix Element Method beyond the Born approximation: Calculating event weights at next-to-leading order accuracy
• Improving the sensitivity of Higgs boson searches in the golden channel
• Precision measurement of the top quark mass from dilepton events at CDF II
• Measurement of Cross Sections for $b$ Jet Production in Events with a $Z$ Boson in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
• Measurement of the top quark mass in the lepton+jets channel using the Ideogram Method
• Two Invertible Networks for the Matrix Element Method
• Measurement of the Top-Quark Mass in All-Hadronic Decays in p pbar Collisions at CDF II
• Measurement of the p anti-p to t anti-t Production Cross Section and the Top Quark Mass at sqrt{s}=1.96 TeV in the All-Hadronic Decay Mode
• Review of Top Quark Physics Results
• The Matrix Element Method at next-to-leading order QCD for hadronic collisions: Single top-quark production at the LHC as an example application
• Review of Properties of the Top Quark from Measurements at the Tevatron
• Precision-Machine Learning for the Matrix Element Method
• General analysis of signals with two leptons and missing energy at the Large Hadron Collider
• A Search for the Higgs Boson Produced in Association with $Z\to {\ell }^{+}{\ell }^{-}$ Using the Matrix Element Method at CDF II
• Measurement of off-shell Higgs boson production in the $H^{\ast }\to ZZ\to 4\ell$ decay channel using a neural simulation-based inference technique in 13 TeV $pp$ collisions with the ATLAS detector
• Precision measurements of the top quark mass from the Tevatron in the pre-LHC era
• A Search for the Associated Production of the Standard-Model Higgs Boson in the All-Hadronic Channel
• Properties of the Top Quark
• Searches for the Higgs boson decaying to W^{+} W^{-} -> l^{+}nu l^{-}nubar with the CDF II detector
• Electroweak-Higgs Unification in the Two Higgs Doublet Model: Masses and Couplings of the Neutral and Charged Higgs Bosons
• The Matrix Element Method at next-to-leading order accuracy