Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron

. 2018 Jan 26 ; 120 (4) : 042001.

Status PubMed-not-MEDLINE Jazyk angličtina Země Spojené státy americké Médium print

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid29437406

The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of sqrt[s]=1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is A_{FB}^{tt[over ¯]}=0.128±0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.

2 Physikalisches Institut Georg August Universität Göttingen 37073 Göttingen Germany

3 Physikalisches Institut A RWTH Aachen University 52056 Aachen Germany

Argonne National Laboratory Argonne Illinois 60439 USA

Baylor University Waco Texas 76798 USA

Brookhaven National Laboratory Upton New York 11973 USA

Brown University Providence Rhode Island 02912 USA

Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA

CEA Saclay Irfu SPP F 91191 Gif Sur Yvette Cedex France

Center for High Energy Physics Kyungpook National University Daegu 702 701 Korea; Seoul National University Seoul 151 742 Korea; Sungkyunkwan University Suwon 440 746 Korea; Korea Institute of Science and Technology Information Daejeon 305 806 Korea; Chonnam National University Gwangju 500 757 Korea; Chonbuk National University Jeonju 561 756 Korea; Ewha Womans University Seoul 120 750 Korea

Centro de Investigaciones Energeticas Medioambientales y Tecnologicas E 28040 Madrid Spain

CINVESTAV Mexico City 07360 Mexico

Comenius University 842 48 Bratislava Slovakia; Institute of Experimental Physics 040 01 Kosice Slovakia

CPPM Aix Marseille Université CNRS IN2P3 F 13288 Marseille Cedex 09 France

Czech Technical University Prague 116 36 Prague 6 Czech Republic

Delhi University Delhi 110 007 India

Division of High Energy Physics Department of Physics University of Helsinki FIN 00014 Helsinki Finland; Helsinki Institute of Physics FIN 00014 Helsinki Finland

Duke University Durham North Carolina 27708 USA

Enrico Fermi Institute University of Chicago Chicago Illinois 60637 USA

Ernest Orlando Lawrence Berkeley National Laboratory Berkeley California 94720 USA

Faculty of Mathematics and Physics Center for Particle Physics Charles University 116 36 Prague 1 Czech Republic

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA

Florida State University Tallahassee Florida 32306 USA

Glasgow University Glasgow G12 8QQ United Kingdom

Gruppo Collegato di Udine 1 33100 Udine Italy

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Institució Catalana de Recerca i Estudis Avançats Spain

Institut de Fisica d'Altes Energies ICREA Universitat Autonoma de Barcelona E 08193 Bellaterra Spain

Institut für Experimentelle Kernphysik Karlsruhe Institute of Technology D 76131 Karlsruhe Germany

Institut für Physik Universität Mainz 55099 Mainz Germany

Institute for High Energy Physics Protvino Moscow region 142281 Russia

Institute for Theoretical and Experimental Physics ITEP Moscow 117259 Russia

Institute of Physics Academia Sinica Taipei Taiwan 11529 Republic of China

Institute of Physics Academy of Sciences of the Czech Republic 182 21 Prague Czech Republic

Instituto de Fisica de Cantabria CSIC University of Cantabria 39005 Santander Spain

Iowa State University Ames Iowa 50011 USA

IPHC Université de Strasbourg CNRS IN2P3 F 67037 Strasbourg France

IPNL Université Lyon 1 CNRS IN2P3 F 69622 Villeurbanne Cedex France and Université de Lyon F 69361 Lyon CEDEX 07 France

Istituto Nazionale di Fisica Nucleare Bologna 1 40127 Bologna Italy

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Istituto Nazionale di Fisica Nucleare Sezione di Padova 1 35131 Padova Italy

Istituto Nazionale di Fisica Nucleare Sezione di Roma 1 1 00185 Roma Italy

Istituto Nazionale di Fisica Nucleare Trieste 1 33100 Udine Italy

Joint Institute for Nuclear Research RU 141980 Dubna Russia

Korea Detector Laboratory Korea University Seoul 02841 Korea

Laboratori Nazionali di Frascati Istituto Nazionale di Fisica Nucleare 1 00044 Frascati Italy

LAFEX Centro Brasileiro de Pesquisas Físicas Rio de Janeiro RJ 22290 Brazil

LAL Université Paris Sud CNRS IN2P3 Université Paris Saclay F 91898 Orsay Cedex France

Lancaster University Lancaster LA1 4YB United Kingdom

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Ludwig Maximilians Universität München 80539 München Germany

Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA

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Mitchell Institute for Fundamental Physics and Astronomy Texas A and M University College Station Texas 77843 USA

Moscow State University Moscow 119991 Russia

Nikhef Science Park 1098 XG Amsterdam The Netherlands

Northeastern University Boston Massachusetts 02115 USA

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Petersburg Nuclear Physics Institute St Petersburg 188300 Russia

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Scuola Normale Superiore 1 56127 Pisa Italy

Southern Methodist University Dallas Texas 75275 USA

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Tata Institute of Fundamental Research Mumbai 400 005 India

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The University of Manchester Manchester M13 9PL United Kingdom

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Universidad de los Andes Bogotá 111711 Colombia

Universidad San Francisco de Quito Quito 170157 Ecuador

Universidade do Estado do Rio de Janeiro Rio de Janeiro RJ 20550 Brazil

Universidade Federal do ABC Santo André São Paulo SP 09210 Brazil

University College Dublin Dublin 4 Ireland

University College London London WC1E 6BT United Kingdom

University of Arizona Tucson Arizona 85721 USA

University of Athens 157 71 Athens Greece

University of Bologna 1 40127 Bologna Italy

University of California Davis Davis California 95616 USA

University of California Los Angeles Los Angeles California 90024 USA

University of California Riverside Riverside California 92521 USA

University of Florida Gainesville Florida 32611 USA

University of Geneva CH 1211 Geneva 4 Switzerland

University of Illinois at Chicago Chicago Illinois 60607 USA

University of Illinois Urbana Illinois 61801 USA

University of Kansas Lawrence Kansas 66045 USA

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University of Padova 1 35131 Padova Italy

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University of Rochester Rochester New York 14627 USA

University of Science and Technology of China Hefei 230026 People's Republic of China

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University of Tsukuba Tsukuba Ibaraki 305 Japan

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