Observation of s-channel production of single top quarks at the Tevatron

. 2014 Jun 13 ; 112 (23) : 231803. [epub] 20140609

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

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid24972197

We report the first observation of single-top-quark production in the s channel through the combination of the CDF and D0 measurements of the cross section in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7 fb(-1) per experiment. The measured cross section is σ(s) = 1.29(-0.24)(+0.26) pb. The probability of observing a statistical fluctuation of the background to a cross section of the observed size or larger is 1.8 × 10(-10), corresponding to a significance of 6.3 standard deviations for the presence of an s-channel contribution to the production of single-top quarks.

2 Physikalisches Institut Georg August Universität Göttingen Göttingen Germany

3 Physikalisches Institut A RWTH Aachen University 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 Irfu SPP Saclay 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

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

Centro de Investigaciones Energeticas Medioambientales y Tecnologicas E 28040 Madrid Spain

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

CINVESTAV Mexico City Mexico

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

CPPM Aix Marseille Université CNRS IN2P3 Marseille France

Czech Technical University Prague Prague Czech Republic

Czech Technical University Prague Prague Czech Republic and CEA Irfu SPP Saclay France

Delhi University Delhi 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

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA and Istituto Nazionale di Fisica Nucleare Pisa 1 56127 Pisa Italy

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA and University of Rochester Rochester New York 14627 USA

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA and University of Virginia Charlottesville Virginia 22906 USA

Florida State University Tallahassee Florida 32306 USA

Glasgow University Glasgow G12 8QQ United Kingdom

Harvard University Cambridge Massachusetts 02138 USA

Imperial College London London SW7 2AZ United Kingdom

Indiana University Bloomington Indiana 47405 USA

Institució Catalana de Recerca i Estudis Avançats Barcelona 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 Mainz Germany

Institute for High Energy Physics Protvino Russia

Institute of Physics Academia Sinica Taipei Taiwan 11529 Republic of China

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

Institution for Theoretical and Experimental Physics ITEP Moscow 117259 Russia

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 Strasbourg France

IPNL Université Lyon 1 CNRS IN2P3 Villeurbanne France and Université de Lyon Lyon France

Istituto Nazionale di Fisica Nucleare Bologna 1 40127 Bologna Italy

Istituto Nazionale di Fisica Nucleare Bologna 1 40127 Bologna Italy and University of Bologna 1 40127 Bologna Italy

Istituto Nazionale di Fisica Nucleare Pisa 1 56127 Pisa Italy

Istituto Nazionale di Fisica Nucleare Pisa 1 56127 Pisa Italy and INFN Pavia 1 27100 Pavia Italy and University of Pavia 1 27100 Pavia Italy

Istituto Nazionale di Fisica Nucleare Pisa 1 56127 Pisa Italy and Scuola Normale Superiore 1 56127 Pisa Italy

Istituto Nazionale di Fisica Nucleare Pisa 1 56127 Pisa Italy and University of Pisa 1 56127 Pisa Italy

Istituto Nazionale di Fisica Nucleare Pisa 1 56127 Pisa Italy and University of Siena 1 56127 Pisa Italy

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

Istituto Nazionale di Fisica Nucleare Sezione di Padova 1 35131 Padova Italy and University of Padova 1 35131 Padova Italy

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

Istituto Nazionale di Fisica Nucleare Sezione di Roma 1 1 00185 Roma Italy and Sapienza Università di Roma 1 00185 Roma Italy

Istituto Nazionale di Fisica Nucleare Trieste 1 33100 Udine Italy

Istituto Nazionale di Fisica Nucleare Trieste 1 33100 Udine Italy and Gruppo Collegato di Udine 1 33100 Udine Italy and University of Udine 1 33100 Udine Italy

Istituto Nazionale di Fisica Nucleare Trieste 1 33100 Udine Italy and University of Trieste 1 34127 Trieste Italy

Joint Institute for Nuclear Research RU 141980 Dubna Russia

Korea Detector Laboratory Korea University Seoul Korea

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

LAFEX Centro Brasileiro de Pesquisas Físicas Rio de Janeiro Brazil

LAL Université Paris Sud CNRS IN2P3 Orsay France

Lancaster University Lancaster LA1 4YB United Kingdom

Langston University Langston Oklahoma 73050 USA

Louisiana Tech University Ruston Louisiana 71272 USA

LPC Université Blaise Pascal CNRS IN2P3 Clermont France

LPNHE Universités Paris 6 and 7 CNRS IN2P3 Paris France

LPSC Université Joseph Fourier Grenoble 1 CNRS IN2P3 Institut National Polytechnique de Grenoble Grenoble France

Ludwig Maximilians Universität München München Germany

Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA

Michigan State University East Lansing Michigan 48824 USA

Michigan State University East Lansing Michigan 48824 USA and CPPM Aix Marseille Université CNRS IN2P3 Marseille France

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

Moscow State University Moscow Russia

Nikhef Science Park Amsterdam The Netherlands

Nikhef Science Park Amsterdam The Netherlands and Radboud University Nijmegen Nijmegen The Netherlands

Northeastern University Boston Massachusetts 02115 USA

Northern Illinois University DeKalb Illinois 60115 USA

Northwestern University Evanston Illinois 60208 USA

Okayama University Okayama 700 8530 Japan

Oklahoma State University Stillwater Oklahoma 74078 USA

Osaka City University Osaka 558 8585 Japan

Panjab University Chandigarh India

Petersburg Nuclear Physics Institute St Petersburg Russia

Physikalisches Institut Universität Freiburg Freiburg Germany

Princeton University Princeton New Jersey 08544 USA

Purdue University Calumet Hammond Indiana 46323 USA

Purdue University West Lafayette Indiana 47907 USA

Rice University Houston Texas 77005 USA

Rutgers University Piscataway New Jersey 08855 USA

Southern Methodist University Dallas Texas 75275 USA

State University of New York Buffalo New York 14260 USA

State University of New York Stony Brook New York 11794 USA

Taras Shevchenko National University of Kyiv Kiev Ukraine

Tata Institute of Fundamental Research Mumbai India

The Johns Hopkins University Baltimore Maryland 21218 USA

The Ohio State University Columbus Ohio 43210 USA

The Rockefeller University New York New York 10065 USA

The University of Manchester Manchester M13 9PL United Kingdom

Tufts University Medford Massachusetts 02155 USA

Universidad de los Andes Bogotá Colombia

Universidad San Francisco de Quito Quito Ecuador

Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil

Universidade Federal do ABC Santo André Brazil

University College Dublin Dublin 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 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

University of Liverpool Liverpool L69 7ZE United Kingdom

University of Michigan Ann Arbor Michigan 48109 USA

University of Mississippi University Mississippi 38677 USA

University of Nebraska Lincoln Nebraska 68588 USA

University of New Mexico Albuquerque New Mexico 87131 USA

University of Notre Dame Notre Dame Indiana 46556 USA

University of Oklahoma Norman Oklahoma 73019 USA

University of Oxford Oxford OX1 3RH United Kingdom

University of Pennsylvania Philadelphia Pennsylvania 19104 USA

University of Pittsburgh Pittsburgh Pennsylvania 15260 USA

University of Rochester Rochester New York 14627 USA

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

University of Texas Arlington Texas 76019 USA

University of Tsukuba Tsukuba Ibaraki 305 Japan

University of Virginia Charlottesville Virginia 22906 USA

University of Washington Seattle Washington 98195 USA

University of Wisconsin Madison Wisconsin 53706 USA

Uppsala University Uppsala Sweden

Waseda University Tokyo 169 Japan

Wayne State University Detroit Michigan 48201 USA

Yale University New Haven Connecticut 06520 USA

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