A search for tt resonances with the ATLAS detector in 2.05 fb −1 of proton-proton collisions at √ s =7 TeV

The ATLAS Collaboration

研究成果: Article査読

26 被引用数 (Scopus)

抄録

A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb−1, which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to tt for narrow and wide resonances. For narrow Z′ bosons, the observed 95 % Bayesian credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of mZ′ = 500 GeV to mZ ′= 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z′ boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is mZ < 880 GeV (mgKK < 1130 GeV).

本文言語English
論文番号2083
ジャーナルEuropean Physical Journal C
72
7
DOI
出版ステータスPublished - 2012 7月 26
外部発表はい

ASJC Scopus subject areas

  • 工学(その他)
  • 物理学および天文学(その他)

フィンガープリント

「A search for tt resonances with the ATLAS detector in 2.05 fb −1 of proton-proton collisions at √ s =7 TeV」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル