English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We present a measurement of the top quark pair production cross section inppbar collisions at \sqrt{s}=1.96 TeV using approximately 1 fb^{-1} of datacollected with the D0 detector. We consider decay channels containing two highpt charged leptons where one lepton is identified as an electron or a muonwhile the other lepton can be an electron, a muon or a hadronically decayingtau lepton. For a mass of the top quark of 170 GeV, the measured cross sectionis 7.5 +1.0-1.0 (stat) +0.7-0.6 (syst) +0.6-0.5 (lumi) pb. Using lepton+tauevents only, we measure: \sigma_ttbar \times B(ttbar to ltau bbbar) = 0.13+0.09-0.08 (stat) +0.06-0.06 (syst) +0.02-0.02 (lumi) pb. Comparing themeasured cross section as a function of the mass of the top quark with apartial next-to-next-to leading order Quantum Chromodynamics theoreticalprediction, we extract a mass of the top quark of 171.5 +9.9-8.8 GeV, inagreement with direct measurements.

Measurement of the ttbar production cross section and top quark mass extraction using dilepton events in ppbar collisions