Journal
PHYSICAL REVIEW D
Volume 90, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.90.072011
Keywords
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Funding
- Department of Energy and National Science Foundation (United States of America)
- Alternative Energies and Atomic Energy Commission
- National Center for Scientific Research/National Institute of Nuclear and Particle Physics (France)
- Ministry of Education and Science of the Russian Federation
- National Research Center Kurchatov Institute of the Russian Federation
- Russian Foundation for Basic Research (Russia)
- National Council for the Development of Science and Technology
- Carlos Chagas Filho Foundation for the Support of Research in the State of Rio de Janeiro (Brazil)
- Department of Atomic Energy and Department of Science and Technology (India)
- Administrative Department of Science, Technology and Innovation (Colombia)
- National Council of Science and Technology (Mexico)
- National Research Foundation of Korea (Korea)
- Foundation for Fundamental Research on Matter (The Netherlands)
- Science and Technology Facilities Council
- Royal Society (United Kingdom)
- Ministry of Education, Youth and Sports (Czech Republic)
- Bundesministerium fur Bildung und Forschung (Federal Ministry of Education and Research) (Germany)
- Deutsche Forschungsgemeinschaft (German Research Foundation) (Germany)
- Science Foundation Ireland (Ireland)
- Swedish Research Council (Sweden)
- China Academy of Sciences
- National Natural Science Foundation of China (China)
- Ministry of Education and Science of Ukraine (Ukraine)
- ICREA Funding Source: Custom
- Direct For Mathematical & Physical Scien
- Division Of Physics [1306040] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1206092, 1205960, 1306951] Funding Source: National Science Foundation
- Science and Technology Facilities Council [PP/D004284/1, ST/K001418/1, ST/M001474/1, ST/H001069/2] Funding Source: researchfish
- STFC [ST/H001069/2, PP/D004284/1] Funding Source: UKRI
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We present a measurement of the forward-backward asymmetry in top quark-antiquark production using the full Tevatron Run II data set collected by the D0 experiment at Fermilab. The measurement is performed in lepton + jets final states using a new kinematic fitting algorithm for events with four or more jets and a new partial reconstruction algorithm for events with only three jets. Corrected for detector acceptance and resolution effects, the asymmetry is evaluated to be A(FB) = (10.6 +/- 3.0)%. Results are consistent with the standard model predictions which range from 5.0% to 8.8%. We also present the dependence of the asymmetry on the invariant mass of the top quark-antiquark system and the difference in rapidities of the top quark and antiquark.
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