Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in √s =7 TeV proton–proton collisions

The ATLAS collaboration

doi:10.1140/epjc/s10052-012-2237-1

Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in √s =7 TeV proton–proton collisions

The ATLAS collaboration

European Organization for Nuclear Research
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Rutherford Appleton Laboratory
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Boston University
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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
Joint Institute for Nuclear Research, Dubna
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Technical University of Athens
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and Physics University of Udine
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University of Pennsylvania School of Arts and Sciences
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Universidade de Lisboa
Columbia University
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University of Chicago
Technical University Dresden
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
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University of Athens
National Research Nuclear University MEPhI
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Nagoya University
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Duke University
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University of Michigan, Ann Arbor
Universidad Autónoma de Madrid
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Dipartimento di Fisica
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University of Cambridge
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Tufts University
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Gaziantep University
Technion - Israel Institute of Technology
University of Iowa
McGill University
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Novosibirsk State University
Université Hassan II Aïn Chock - Casablanca et LASAARE
University of Illinois
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
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University of Salento
Georg-August-Universität Göttingen
Istanbul Technical University
Université Paris-Sud
Niels Bohr Institutet
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Institute of Physics of the Czech Academy of Sciences
The University of Sheffield
University of Belgrade
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University 'Politehnica' of Bucharest
Simon Fraser University
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Louisiana Tech University
Pontificia Universidad Católica de Chile
Southern Methodist University
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KTH Royal Institute of Technology
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Manhattan College
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Hiroshima Institute of Technology
Okayama University
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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
National Centre for Particle and High Energy Physics
Gazi University

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

45 Citations (Scopus)

Résumé

A search is presented for the pair production of light scalar top quarks in √s = 7 TeV proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider. This analysis uses the full data sample collected during 2011 running that corresponds to a total integrated luminosity of 4.7 fb⁻¹. Light scalar top quarks are searched for in events with two opposite-sign leptons (e, μ), large missing transverse momentum and at least one jet in the final state. No excess over Standard Model expectations is found, and the results are interpreted under the assumption that the light scalar top decays to a b-quark in addition to an on-shell chargino whose decay occurs through a virtual W boson. If the chargino mass is 106 GeV, light scalar top-quark masses up to 130 GeV are excluded for neutralino masses below 70 GeV.

langue originale	Anglais
Numéro d'article	2237
journal	European Physical Journal C
Volume	72
Numéro de publication	11
Les DOIs	https://doi.org/10.1140/epjc/s10052-012-2237-1
état	Publié - 30 nov. 2012
Modification externe	Oui

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10.1140/epjc/s10052-012-2237-1

Contient cette citation

@article{c6c264fbe0c1467580549b664532d4d9,

title = "Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in √s =7 TeV proton–proton collisions",

abstract = "A search is presented for the pair production of light scalar top quarks in √s = 7 TeV proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider. This analysis uses the full data sample collected during 2011 running that corresponds to a total integrated luminosity of 4.7 fb−1. Light scalar top quarks are searched for in events with two opposite-sign leptons (e, μ), large missing transverse momentum and at least one jet in the final state. No excess over Standard Model expectations is found, and the results are interpreted under the assumption that the light scalar top decays to a b-quark in addition to an on-shell chargino whose decay occurs through a virtual W boson. If the chargino mass is 106 GeV, light scalar top-quark masses up to 130 GeV are excluded for neutralino masses below 70 GeV.",

author = "\{The ATLAS collaboration\} and G. Aad and T. Abajyan and B. Abbott and J. Abdallah and Khalek, \{S. Abdel\} 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 E. Acerbi 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 O. Davignon and \{De La Taille\}, C. and Sauvan, \{J. B.\} and O. Simard",

note = "Publisher Copyright: {\textcopyright} 2012, CERN for the benefit of the ATLAS collaboration.",

year = "2012",

month = nov,

day = "30",

doi = "10.1140/epjc/s10052-012-2237-1",

language = "English",

volume = "72",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "11",

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TY - JOUR

T1 - Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in √s =7 TeV proton–proton collisions

AU - The ATLAS collaboration

AU - Aad, G.

AU - Abajyan, T.

AU - Abbott, B.

AU - Abdallah, J.

AU - Khalek, S. Abdel

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 - Acerbi, E.

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 - Davignon, O.

AU - De La Taille, C.

AU - Sauvan, J. B.

AU - Simard, O.

PY - 2012/11/30

Y1 - 2012/11/30

N2 - A search is presented for the pair production of light scalar top quarks in √s = 7 TeV proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider. This analysis uses the full data sample collected during 2011 running that corresponds to a total integrated luminosity of 4.7 fb−1. Light scalar top quarks are searched for in events with two opposite-sign leptons (e, μ), large missing transverse momentum and at least one jet in the final state. No excess over Standard Model expectations is found, and the results are interpreted under the assumption that the light scalar top decays to a b-quark in addition to an on-shell chargino whose decay occurs through a virtual W boson. If the chargino mass is 106 GeV, light scalar top-quark masses up to 130 GeV are excluded for neutralino masses below 70 GeV.

AB - A search is presented for the pair production of light scalar top quarks in √s = 7 TeV proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider. This analysis uses the full data sample collected during 2011 running that corresponds to a total integrated luminosity of 4.7 fb−1. Light scalar top quarks are searched for in events with two opposite-sign leptons (e, μ), large missing transverse momentum and at least one jet in the final state. No excess over Standard Model expectations is found, and the results are interpreted under the assumption that the light scalar top decays to a b-quark in addition to an on-shell chargino whose decay occurs through a virtual W boson. If the chargino mass is 106 GeV, light scalar top-quark masses up to 130 GeV are excluded for neutralino masses below 70 GeV.

U2 - 10.1140/epjc/s10052-012-2237-1

DO - 10.1140/epjc/s10052-012-2237-1

M3 - Article

AN - SCOPUS:84871215269

SN - 1434-6044

VL - 72

JO - European Physical Journal C

JF - European Physical Journal C

IS - 11

M1 - 2237

ER -

Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in √s =7 TeV proton–proton collisions

Résumé

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