کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10724080 | 1033911 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dependence of the tt¯ production cross section on the transverse momentum of the top quark
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present a measurement of the differential cross section for tt¯ events produced in pp¯ collisions at s=1.96 TeV as a function of the transverse momentum (pT) of the top quark. The selected events contain a high-pT lepton (â), a large imbalance in pT, four or more jets with at least one candidate for a b jet, and correspond to 1 fbâ1 of integrated luminosity recorded with the D0 detector. Objects in the event are associated through a constrained kinematic fit to the tt¯âWbWb¯ââνbqq¯â²b¯ process. Results from next and next-to-next-to-leading-order perturbative QCD calculations agree with the measured differential cross section. Comparisons are also provided to predictions from Monte Carlo event generators using QCD calculations at different levels of precision.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 693, Issue 5, 18 October 2010, Pages 515-521
Journal: Physics Letters B - Volume 693, Issue 5, 18 October 2010, Pages 515-521
نویسندگان
D0 Collaboration D0 Collaboration, V.M. Abazov, B. Abbott, M. Abolins, B.S. Acharya, M. Adams, T. Adams, E. Aguilo, G.D. Alexeev, G. Alkhazov, A. Alton, G. Alverson, G.A. Alves, L.S. Ancu, M. Aoki, Y. Arnoud, M. Arov, A. Askew, E.G. Zverev,