Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV

The ATLAS collaboration

研究成果: Contribution to journalArticle査読

171 被引用数 (Scopus)

抄録

A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.

本文言語英語
論文番号1577
ジャーナルEuropean Physical Journal C
71
3
DOI
出版ステータス出版済み - 1 1 2011

All Science Journal Classification (ASJC) codes

  • 工学(その他)
  • 物理学および天文学(その他)

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