Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC

The ATLAS collaboration

doi:10.1007/JHEP11(2012)094

Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC

The ATLAS collaboration

University of Freiburg
University Bonn
University of Oklahoma
The Barcelona Institute of Science and Technology
Laboratoire de l'Accélérateur Linéaire
University of Geneva
Azerbaijan Academy of Sciences
University of Amsterdam
Oklahoma State University
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Brookhaven National Laboratory Physics Department
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Yale University
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Queen Mary University of London
Rutherford Appleton Laboratory
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Johannes Gutenberg University
Boston University
Stony Brook University
University of Texas
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Bogazici University
Lund University
University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
State University of New York Albany
Royal Holloway University of London
University of Victoria
Laboratoire de Physique Subatomique et de Cosmologie de Grenoble
European Organization for Nuclear Research
Joint Institute for Nuclear Research, Dubna
Sezione INFN di Milano
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Technical University of Athens
and Physics University of Udine
Humboldt-Universität zu Berlin
Universités Paris VI and VII
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University of Birmingham
University of Liverpool
University of Glasgow
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University of Heidelberg
University of Chicago
University of Milano
Technical University Dresden
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
LNF-INFN
University of Athens
National Research Nuclear University MEPhI
Institute of Experimental Physics Slovak Academy of Sciences
Nagoya University
Aix-Marseille Université
Laboratoire de Physique des Particules
University of Oxford
Stanford Linear Accelerator Center
Duke University
Ernest Orlando Lawrence Berkeley National Laboratory
University of Michigan, Ann Arbor
Universidad Autónoma de Madrid
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Dipartimento di Fisica
University of Wisconsin-Madison
University of Cambridge
Stockholm University
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University of Illinois
Czech Technical University in Prague
University of Johannesburg
Long Beach VA and University of California
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Universite de Montreal
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University of Alberta
Institute of High Energy Physics, Chinese Academy of Sciences
University College London
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Max-Planck-Institut für Physik
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Harvard University
Lancaster University
University of Sussex
Comenius University
California State University, Fresno
Tufts University
University of Washington
Gaziantep University
Technion - Israel Institute of Technology
University of Iowa
McGill University
INFN Sezione di Bologna
Novosibirsk State University
Université Hassan II
York University
University of Regina
c/o DESY
University of Bologna
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
University of Pisa
Radboud University
University of Edinburgh
Sezione di Lecce
University of Salento
Georg-August-Universität Göttingen
Istanbul Technical University
Physique des Particules Physique Nucléaire de Lyon
Niels Bohr Institutet
B. I. Stepanov Institute of Physics
Institute of Physics of the Czech Academy of Sciences
University of Belgrade
University of Pittsburgh
Clermont-Auvergne University
University of Belgrade
University of Texas at Arlington
Tokyo Metropolitan University
UMass Amherst
University of Oregon
Uppsala University
Universidad Técnica Federico Santa María
Indiana University Bloomington
University of Bergen
Universität Siegen
New York University
University of Oslo
University of Dortmund
University of Valencia
Ankara University
Dumlupinar University
Northern Illinois University
Instituto de Biofisica da UFRJ
Fermi National Accelerator Laboratory
University of Calabria
University of Coimbra
Universidad Autónoma de San Luis Potosi
Federal University of Juiz de Fora (UFJF)
Dogus University
Charles University
Iowa State University
Nanjing University
Faculté des Sciences Rabat
University of Arizona
Academy of Science
University of California at Santa Cruz
Academia Sinica, Institute Of Physics
Department of Biochemistry and Molecular and Structural Biology
INFN Sezione di Pavia
University of Pavia
Università di Napoli Parthenope
Institute of Particle Physics
The University of Sheffield
University 'Politehnica' of Bucharest
West University in Timisoara
Simon Fraser University
Middle East Technical University (METU)
Université Mohamed Premier
Louisiana Tech University
Pontificia Universidad Católica de Chile
Southern Methodist University
Tbilisi State University
Federal University of Sao Joao del Rei (UFSJ)
Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa
University of São Paulo
Justus-Liebig-Universität Giessen
Cadi Ayyad University
University of Innsbruck
University of Warwick
Petersburg Nuclear Physics Institute (PNPI)
Shandong University
The Ohio State University
University of Würzburg
Centre National de l'Energie des Sciences Techniques Nucleaires
Carleton University
Moscow State University
Universidad de Buenos Aires
University of New Mexico
Yerevan Physics Institute
Palacky University Olomouc
University of the Witwatersrand, Johannesburg
University of Cape Town
University of Science and Technology of China
Osaka University
University of Tsukuba
Shinshu University
Kobe University
Aristotle University of Thessaloniki
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Tokyo Institute of Technology
University of Adelaide
KTH Royal Institute of Technology
Kyushu University
Waseda University
Universität Hamburg
Manhattan College
Sun Yat-Sen University
Universidad Antonio Narino
Hiroshima Institute of Technology
Okayama University
Universidade de Minho
University of South Carolina
Wigner Research Centre for Physics
California Institute of Technology
Jagiellonian University
Nagasaki Institute of Applied Science
TOBB University of Economics and Technology
Kyoto University of Education
Ritsumeikan University Biwako-Kusatsu Campus
Massachusetts Institute of Technology
Turkish Atomic Energy Authority
University of KwaZulu-Natal
National Centre for Particle and High Energy Physics
Gazi University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

The results of a search for direct pair production of heavy top-quark partners in 4.7 fb^–1 of integrated luminosity from pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95% confidence level.

langue originale	Anglais
Numéro d'article	94
journal	Journal of High Energy Physics
Volume	2012
Numéro de publication	11
Les DOIs	https://doi.org/10.1007/JHEP11(2012)094
état	Publié - 1 nov. 2012
Modification externe	Oui

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10.1007/JHEP11(2012)094

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@article{c1647fadd05b4113bb54ab3fbcc9a2c4,

title = "Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC",

abstract = "The results of a search for direct pair production of heavy top-quark partners in 4.7 fb–1 of integrated luminosity from pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95\% confidence level.",

keywords = "Hadron-Hadron scattering",

author = "\{The ATLAS collaboration\} and G. Aad and T. Abajyan and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and Abdelalim, \{A. A.\} and O. Abdinov and R. Aben and B. Abi and M. Abolins and Abouzeid, \{O. S.\} and H. Abramowicz and H. Abreu and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and Addy, \{T. N.\} and J. Adelman and S. Adomeit and P. Adragna and T. Adye and S. Aefsky and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and M. Aharrouche and Ahlen, \{S. P.\} and F. Ahles and A. Ahmad and M. Ahsan and G. Aielli and T. Akdogan and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alam, \{M. S.\} and Alam, \{M. A.\} and J. Albert and S. Albrand and M. Aleksa and Aleksandrov, \{I. N.\} and F. Alessandria and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and M. Aliev and O. Davignon and Sauvan, \{J. B.\} and O. Simard",

note = "Publisher Copyright: {\textcopyright} CERN.",

year = "2012",

month = nov,

day = "1",

doi = "10.1007/JHEP11(2012)094",

language = "English",

volume = "2012",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

number = "11",

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T1 - Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC

AU - The ATLAS collaboration

AU - Aad, G.

AU - Abajyan, T.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdelalim, A. A.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - Abouzeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Addy, T. N.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adragna, P.

AU - Adye, T.

AU - Aefsky, S.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Aharrouche, M.

AU - Ahlen, S. P.

AU - Ahles, F.

AU - Ahmad, A.

AU - Ahsan, M.

AU - Aielli, G.

AU - Akdogan, T.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alam, M. S.

AU - Alam, M. A.

AU - Albert, J.

AU - Albrand, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alessandria, F.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Aliev, M.

AU - Davignon, O.

AU - Sauvan, J. B.

AU - Simard, O.

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N2 - The results of a search for direct pair production of heavy top-quark partners in 4.7 fb–1 of integrated luminosity from pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95% confidence level.

AB - The results of a search for direct pair production of heavy top-quark partners in 4.7 fb–1 of integrated luminosity from pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95% confidence level.

KW - Hadron-Hadron scattering

UR - https://www.scopus.com/pages/publications/84870325111

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DO - 10.1007/JHEP11(2012)094

M3 - Article

AN - SCOPUS:84870325111

SN - 1126-6708

VL - 2012

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

M1 - 94

ER -

Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC

Résumé

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