2010/01/31 by V. M. Abazov, The D0 Collaboration, B. Abbott +99
Mathematics · Physics and Astronomy · #Algorithm #Bar (unit) #Event (particle physics) #Galaxy #Gauge (firearms) #High-Energy Particle Collisions Research #Lepton #Luminosity #Mathematics #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Perturbative QCD #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Standard Model (mathematical formulation) #hep-ex
paper · pdf · doi:10.1016/j.physletb.2010.09.011
published as Phys.Lett.B693:515-521, 2010 · 8 pages, 6 figures, 4 tables, updated to reflect the published version
openalex publication_date 2010/09/17 · arxiv created 2010/10/04 · arxiv updated 2014/11/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 (ℓ), a large imbalance in pT, four or more jets with at least one candidate for a b jet, and correspond to 1 fb−1 of integrated luminosity recorded with the D0 detector. Objects in the event are associated through a constrained kinematic fit to the tt¯→WbWb¯→ℓνbqq¯′b¯ 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.