کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10722817 1033806 2012 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of the top quark pair production cross section in pp collisions at s=7TeV in dilepton final states with ATLAS
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 in pp collisions at s=7TeV in dilepton final states with ATLAS
چکیده انگلیسی
A measurement of the production cross section of top quark pairs (tt¯) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider is reported. Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. Using a data sample corresponding to an integrated luminosity of 35pb−1, a tt¯ production cross section σtt¯=177±20(stat.)±14(syst.)±7(lum.)pb is measured for an assumed top quark mass of mt=172.5GeV. A second measurement requiring at least one jet identified as coming from a b quark yields a comparable result, demonstrating that the dilepton final states are consistent with being accompanied by b-quark jets. These measurements are in good agreement with Standard Model predictions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 707, Issue 5, 7 February 2012, Pages 459-477
نویسندگان
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