Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV

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doi:10.1140/epjc/s10052-011-1577-6

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Multitudinario:3078 "Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV" (2011) European Physical Journal C. 71(3)

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Abstract:

A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb –1 , 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations. © CERN for the benefit of the ATLAS collaboration 2011.

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Documento:	Artículo
Título:	Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV
Autor:	Multitudinario:3078
Filiación:	University at Albany, 1400 Washington Ave, Albany, NY 12222, United States University of Alberta, Department of Physics, Centre for Particle Physics, Edmonton, AB T6G 2G7, Canada LAPP, Université de Savoie, CNRS/IN2P3, Annecy-le-Vieux, France Argonne National Laboratory, High Energy Physics Division, 9700 S. Cass Avenue, Argonne, IL 60439, United States University of Arizona, Department of Physics, Tucson, AZ 85721, United States The University of Texas at Arlington, Department of Physics, Box 19059, Arlington, TX 76019, United States University of Athens, Nuclear & Particle Physics, Department of Physics, Panepistimiopouli, Zografou, Athens GR 15771, Greece National Technical University of Athens, Physics Department, 9-Iroon Polytechniou, Zografou, GR-15780, Greece Institute of Physics, Azerbaijan Academy of Sciences, H. Javid Avenue 33, Baku, AZ-143, Azerbaijan Institut de Física d’Altes Energies, IFAE, Edifici Cn, Universitat Autònoma de Barcelona, Bellaterra, ES - 08193, Spain University of Bergen, Department for Physics and Technology, Allegaten 55, Bergen, NO - 5007, Norway Lawrence Berkeley National Laboratory and University of California, Physics Division, MS50B-6227, 1 Cyclotron Road, Berkeley, CA 94720, United States Humboldt University, Institute of Physics, Berlin, Newtonstr. 15, Berlin, D-12489, Germany University of Bern, Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics, Sidlerstrasse 5, Bern, CH - 3012, Switzerland University of Birmingham, School of Physics and Astronomy, Edgbaston, Birmingham, B15 2TT, United Kingdom University of Bonn, Physikalisches Institut, Nussallee 12, Bonn, D - 53115, Germany Boston University, Department of Physics, 590 Commonwealth Avenue, Boston, MA 02215, United States Brandeis University, Department of Physics, 415 South Street, Waltham, MA MS057, United States Brookhaven National Laboratory, Physics Department, Bldg. 510A, Upton, NY 11973, United States Universidad de Buenos Aires, FCEyN, Dto. Fisica, Pab I - C. Universitaria, Buenos Aires, 1428, Argentina University of Cambridge, Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, United Kingdom Carleton University, Department of Physics, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada CERN, Geneva 23, CH - 1211, Switzerland University of Chicago, Enrico Fermi Institute, 5640 S. Ellis Avenue, Chicago, IL 60637, United States Laboratoire de Physique Corpusculaire, Clermont Université, Université Blaise Pascal, CNRS/IN2P3, Aubiere Cedex, FR - 63177, France Columbia University, Nevis Laboratory, 136 So. Broadway, Irvington, NY 10533, United States University of Copenhagen, Niels Bohr Institute, Blegdamsvej 17, Kobenhavn, DK - 2100, Denmark Faculty of Physics and Applied Computer Science of the AGH-University of Science and Technology, (FPACS, AGH-UST), Al. Mickiewicza 30, Cracow, PL-30059, Poland The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Ul. Radzikowskiego 152, Krakow, PL - 31342, Poland Southern Methodist University, Physics Department, 106 Fondren Science Building, Dallas, TX 75275-0175, United States University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080-3021, United States DESY, Notkestr. 85, D-22603 Hamburg and Platanenallee 6, Zeuthen, D-15738, Germany TU Dortmund, Experimentelle Physik IV, Dortmund, DE - 44221, Germany Technical University Dresden, Institut für Kern- und Teilchenphysik, Zellescher Weg 19, Dresden, D-01069, Germany Duke University, Department of Physics, Durham, NC 27708, United States University of Edinburgh, School of Physics and Astronomy, James Clerk Maxwell Building, The Kings Buildings, Mayfield Road, Edinburgh, EH9 3JZ, United Kingdom Fachhochschule Wiener Neustadt, Johannes Gutenbergstrasse 3, Wiener Neustadt, AT - 2700, Austria INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati, IT-00044, Italy Albert-Ludwigs-Universität, Fakultät für Mathematik und Physik, Hermann-Herder Str. 3, Freiburg i.Br, D - 79104, Germany Université de Genève, Section de Physique, 24 rue Ernest Ansermet, Geneve 4, CH - 1211, Switzerland Justus-Liebig-Universität Giessen, II Physikalisches Institut, Heinrich-Buff Ring 16, Giessen, D-35392, Germany University of Glasgow, Department of Physics and Astronomy, Glasgow, G12 8QQ, United Kingdom Georg-August-Universität, II. Physikalisches Institut, Friedrich-Hund Platz 1, Göttingen, D-37077, Germany LPSC, CNRS/IN2P3 and Univ. Joseph Fourier Grenoble, 53 avenue des Martyrs, Grenoble Cedex, FR-38026, France Hampton University, Department of Physics, Hampton, VA 23668, United States Harvard University, Laboratory for Particle Physics and Cosmology, 18 Hammond Street, Cambridge, MA 02138, United States Hiroshima University, Faculty of Science, 1-3-1 Kagamiyama, Higashihiroshima-shi, Hiroshima JP - 739-8526, Japan Hiroshima Institute of Technology, Faculty of Applied Information Science, 2-1-1 Miyake Saeki-ku, Higashihiroshima-shi, Hiroshima JP - 731-5193, Japan Indiana University, Department of Physics, Swain Hall West 117, Bloomington, IN 47405-7105, United States Institut für Astro- und Teilchenphysik, Technikerstrasse 25, Innsbruck, A - 6020, Austria University of Iowa, 203 Van Allen Hall, Iowa City, IA 52242-1479, United States Iowa State University, Department of Physics and Astronomy, Ames High Energy Physics Group, Ames, IA 50011-3160, United States Joint Institute for Nuclear Research, JINR, Dubna, Moscow Region, RU-141980, Russian Federation KEK, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba-shi, Ibaraki-ken 305-0801, Japan Kobe University, Graduate School of Science, 1-1 Rokkodai-cho, Nada-ku, Kobe, JP 657-8501, Japan Kyoto University, Faculty of Science, Oiwake-cho, Kitashirakawa, Sakyou-ku, Kyoto-shi, Kyoto JP - 606-8502, Japan Kyoto University of Education, 1 Fukakusa, Fujimori, Fushimi-ku, Kyoto-shi, Kyoto JP - 612-8522, Japan Universidad Nacional de La Plata, FCE, Departamento de Física, IFLP (CONICET-UNLP), C.C. 67, La Plata, 1900, Argentina Lancaster University, Physics Department, Lancaster, LA1 4YB, United Kingdom University of Liverpool, Oliver Lodge Laboratory, P.O. 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Mohamed VI, Oujda, 60000, Morocco Université Mohammed V, Faculté des Sciences, 4 Avenue Ibn Battouta, Rabat, 10000, Morocco Comenius University, Faculty of Mathematics, Physics and Informatics, Mlynska dolina F2, Bratislava, SK - 84248, Slovakia Institute of Experimental Physics of the Slovak Academy of Sciences, Dept. of Subnuclear Physics, Watsonova 47, Kosice, SK - 04353, Slovakia School of Physics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa Stockholm University, Department of Physics, AlbaNova, Stockholm, SE-106 91, Sweden The Oskar Klein Centre, AlbaNova, Stockholm, SE - 106 91, Sweden TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C. V6T 2A3, Canada York University, Department of Physics and Astronomy, 4700 Keele St, Toronto, ON M3J 1P3, Canada INFN Gruppo Collegato di Udine, Via delle Scienze 208, Udine, IT - 33100, Italy ICTP, Strada Costiera 11, via delle Scienze 208, Udine, IT - 33100, Italy Università di Udine, Dipartimento di Fisica, Via delle Scienze 208, Udine, IT - 33100, Italy LIP, Portugal Faculdade de Ciencias, Universidade de Lisboa, Lisboa, Portugal CPPM, Marseille, France TRIUMF, Vancouver, Canada FPACS, AGH-UST, Cracow, Poland Department of Physics, University of Coimbra, Coimbra, Portugal Università di Napoli Parthenope, Napoli, Italy Institute of Particle Physics (IPP), Canada Louisiana Tech University, Ruston, United States Universidade de Lisboa, Lisboa, Portugal California State University, Fresno, United States Faculdade de Ciencias, Universidade de Lisboa and at Centro de Fisica Nuclear da Universidade de Lisboa, Lisboa, Portugal California Institute of Technology, Pasadena, United States University of Montreal, Montreal, Canada Baku Institute of Physics, Baku, Azerbaijan Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany Manhattan College, New York, United States School of Physics and Engineering, Sun Yat-sen University, Guangzhou, China Taiwan Tier-1, ASGC, Academia Sinica, Taipei, Taiwan School of Physics, Shandong University, Jinan, China Rutherford Appleton Laboratory, Didcot, United Kingdom Departamento de Fisica, Universidade de Minho, Braga, Portugal Department of Physics and Astronomy, University of South Carolina, Columbia, United States KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary Institute of Physics, Jagiellonian University, Cracow, Poland Centro de Fisica Nuclear da Universidade de Lisboa, Lisboa, Portugal Department of Physics, Oxford University, Oxford, United Kingdom CEA, Gif-sur-Yvette, France LPNHE, Paris, France Nanjing University, Nanjing, Jiangsu, China
Año:	2011
Volumen:	71
Número:	3
DOI:	http://dx.doi.org/10.1140/epjc/s10052-011-1577-6
Título revista:	European Physical Journal C
Título revista abreviado:	Eur. Phys. J. C
ISSN:	14346044
Registro:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v71_n3_p_Multitudinario

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Citas:

---------- APA ----------

(2011) . Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV. European Physical Journal C, 71(3).
http://dx.doi.org/10.1140/epjc/s10052-011-1577-6

---------- CHICAGO ----------

Multitudinario:3078. "Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV" . European Physical Journal C 71, no. 3 (2011).
http://dx.doi.org/10.1140/epjc/s10052-011-1577-6

---------- MLA ----------

Multitudinario:3078. "Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV" . European Physical Journal C, vol. 71, no. 3, 2011.
http://dx.doi.org/10.1140/epjc/s10052-011-1577-6

---------- VANCOUVER ----------

Multitudinario:3078. Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV. Eur. Phys. J. C. 2011;71(3).
http://dx.doi.org/10.1140/epjc/s10052-011-1577-6