Search for second generation scalar leptoquarks in pp collisions at √s = 7 TeV with the ATLAS detector

The ATLAS Collaboration

doi:10.1140/epjc/s10052-012-2151-6

Search for second generation scalar leptoquarks in pp collisions at √s = 7 TeV with the ATLAS detector

The ATLAS Collaboration

European Organization for Nuclear Research
University of Freiburg
University of Oklahoma
The Barcelona Institute of Science and Technology
Laboratoire de l'Accélérateur Linéaire
Section de Physique
University of Geneva
University of Oxford
Azerbaijan Academy of Sciences
Oklahoma State University
Department of Physics and Astronomy
Michigan State University
University of Toronto
Tel Aviv University
Universite Paris-Saclay
Sezione INFN di Milano
University of Milano
Sezione di Roma
Abdus Salam International Centre for Theoretical Physics
Agh University of Science and Technology Faculty of Computer Science
Brookhaven National Laboratory Physics Department
Department of Physics
Hampton University
Yale University
Max-Planck-Institut für Physik
Universität München
School of Physics and Astronomy
Queen Mary University of London
Rutherford Appleton Laboratory
Department of Physics
Brandeis University
Lisboa
Departamento de Fisica Teorica y del Cosmos and CAFPE
University of Granada
Johannes Gutenberg University
Boston University
Departments of Physics & Astronomy and Chemistry
Stony Brook University
Physics Department
University of Texas
INFN Roma Tor Vergata
University of Rome “Tor Vergata”
Department of Physics
Bogazici University
Department of Physics
Lund University
International Center for Elementary Particle Physics and Department of Physics
University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Kobe University
State University of New York Albany
Department of Physics
Royal Holloway University of London
Department of Physics and Astronomy
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
Physics Department
National Technical University of Athens
Dipartimento di Chimica
and Physics University of Udine

Research output: Contribution to journal › Article › peer-review

89 Citations (Scopus)

Abstract

The results of a search for the production of second generation scalar leptoquarks are presented for final states consisting of either two muons and at least two jets or a muon plus missing transverse momentum and at least two jets. A total of 1.03 fb⁻¹ integrated luminosity of protonproton collision data produced by the Large Hadron Collider at √s = 7 TeV and recorded by the ATLAS detector is used for the search. The event yields in the signal regions are found to be consistent with the Standard Model background expectations. The production of second generation leptoquarks is excluded for a leptoquark mass m_LQ < 594 (685) GeV at 95 % confidence level, for a branching ratio of 0.5 (1.0) for leptoquark decay to a muon and a quark.

Original language	English
Article number	2151
Journal	European Physical Journal C
Volume	72
Issue number	9
DOIs	https://doi.org/10.1140/epjc/s10052-012-2151-6
Publication status	Published - 13 Sept 2012
Externally published	Yes

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10.1140/epjc/s10052-012-2151-6

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@article{37f901fa017744e7ad8acfb04697b623,

title = "Search for second generation scalar leptoquarks in pp collisions at √s = 7 TeV with the ATLAS detector",

abstract = "The results of a search for the production of second generation scalar leptoquarks are presented for final states consisting of either two muons and at least two jets or a muon plus missing transverse momentum and at least two jets. A total of 1.03 fb−1 integrated luminosity of protonproton collision data produced by the Large Hadron Collider at √s = 7 TeV and recorded by the ATLAS detector is used for the search. The event yields in the signal regions are found to be consistent with the Standard Model background expectations. The production of second generation leptoquarks is excluded for a leptoquark mass mLQ < 594 (685) GeV at 95 \% confidence level, for a branching ratio of 0.5 (1.0) for leptoquark decay to a muon and a quark.",

author = "\{The ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and Khalek, \{S. Abdel\} and Abdelalim, \{A. A.\} and A. Abdesselam and O. Abdinov and B. Abi and M. Abolins and Zeid, \{O. S.Abou\} 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 M. Aderholz and S. Adomeit and P. Adragna and T. Adye and S. Aefsky and Aguilar-Saavedra, \{J. A.\} 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 A. Akiyama 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 \{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 = sep,

day = "13",

doi = "10.1140/epjc/s10052-012-2151-6",

language = "English",

volume = "72",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "9",

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TY - JOUR

T1 - Search for second generation scalar leptoquarks in pp collisions at √s = 7 TeV with the ATLAS detector

AU - The ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Khalek, S. Abdel

AU - Abdelalim, A. A.

AU - Abdesselam, A.

AU - Abdinov, O.

AU - Abi, B.

AU - Abolins, M.

AU - Zeid, O. S.Abou

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 - Aderholz, M.

AU - Adomeit, S.

AU - Adragna, P.

AU - Adye, T.

AU - Aefsky, S.

AU - Aguilar-Saavedra, J. A.

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 - Akiyama, A.

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 - De La Taille, C.

AU - Sauvan, J. B.

AU - Simard, O.

PY - 2012/9/13

Y1 - 2012/9/13

N2 - The results of a search for the production of second generation scalar leptoquarks are presented for final states consisting of either two muons and at least two jets or a muon plus missing transverse momentum and at least two jets. A total of 1.03 fb−1 integrated luminosity of protonproton collision data produced by the Large Hadron Collider at √s = 7 TeV and recorded by the ATLAS detector is used for the search. The event yields in the signal regions are found to be consistent with the Standard Model background expectations. The production of second generation leptoquarks is excluded for a leptoquark mass mLQ < 594 (685) GeV at 95 % confidence level, for a branching ratio of 0.5 (1.0) for leptoquark decay to a muon and a quark.

AB - The results of a search for the production of second generation scalar leptoquarks are presented for final states consisting of either two muons and at least two jets or a muon plus missing transverse momentum and at least two jets. A total of 1.03 fb−1 integrated luminosity of protonproton collision data produced by the Large Hadron Collider at √s = 7 TeV and recorded by the ATLAS detector is used for the search. The event yields in the signal regions are found to be consistent with the Standard Model background expectations. The production of second generation leptoquarks is excluded for a leptoquark mass mLQ < 594 (685) GeV at 95 % confidence level, for a branching ratio of 0.5 (1.0) for leptoquark decay to a muon and a quark.

U2 - 10.1140/epjc/s10052-012-2151-6

DO - 10.1140/epjc/s10052-012-2151-6

M3 - Article

AN - SCOPUS:84867762840

SN - 1434-6044

VL - 72

JO - European Physical Journal C

JF - European Physical Journal C

IS - 9

M1 - 2151

ER -

Search for second generation scalar leptoquarks in pp collisions at √s = 7 TeV with the ATLAS detector

Abstract

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