کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8190669 1528857 2012 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel
چکیده انگلیسی
A measurement of the production cross-section for top quark pairs (tt¯) in pp collisions at s=7TeV 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−1, 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 σtt¯=187±11(stat.)−17+18(syst.)±6(lumi.)pb and σtt¯=173±17(stat.)−16+18(syst.)±6(lumi.)pb 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 711, Issues 3–4, 15 May 2012, Pages 244-263
نویسندگان
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