Measurement of the top quark pair cross section with ATLAS in pp collisions at using final states with an electron or a muon and a hadronically decaying ¦Ó lepton
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- 作者：ATLAS Collaboration ; G. Aad ; B. Abbott ; J. Abdallah ; S. Abdel Khalek ; A.A. Abdelalim ; O. Abdinov ; B. Abi ; M. Abolins ; O.S. AbouZeid ; H. Abramowicz ; H. Abreu ; E. Acerbi ; B.S. Acharya ; L. Adamczyk ; D.L. Adams ; T.N. Addy ; J. Adelman ; S. Adomeit ; P. Adragna ; et al.
- 关键词：Top quark physics ; Cross section ; Lepton+¦Ó
- 刊名：Physics Letters B
- 出版年：2012
- 出版时间：22 October, 2012
- 年：2012
- 卷：717
- 期：1-3
- 页码：89-108
- 全文大小：1139 K
文摘
A measurement of the cross section of top quark pair production in proton-proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb?1. Events with an isolated electron or muon and a ¦Ó lepton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as originating from a b quark. The measured cross section, , is in good agreement with the Standard Model prediction.