Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel
- 作者：ATLAS Collaboration鈰?/sup>
- 关键词：High-energy collider experiment ; Cross-section ; Top physics
- 刊名：Physics Letters B
- 出版年：2012
- 期刊代码：58_03702693
- 类别：ph
- 出版时间：15 May, 2012
- 卷：711
- 期：3-4
- 页码：244-263
- 文件大小：1417 K
摘要
A measurement of the production cross-section for top quark pairs () in pp collisions at is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in the single lepton topology by requiring an electron or muon, large missing transverse momentum and at least three jets. With a data sample of 35 pb鈭?, two different multivariate methods, one of which uses b-quark jet identification while the other does not, use kinematic variables to obtain cross-section measurements of and respectively. The two measurements are in agreement with each other and with QCD calculations. The first measurement has a better a priori sensitivity and constitutes the main result of this Letter.