A search for \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ t\overline t $\end{document} resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \sqrt {s} = 7 $\end{document} TeV with the ATLAS detector

被引：0
作者：
G. Aad
T. Abajyan
B. Abbott
J. Abdallah
S. Abdel Khalek
A. A. Abdelalim
O. Abdinov
R. Aben
B. Abi
M. Abolins
O. S. AbouZeid
H. Abramowicz
H. Abreu
E. Acerbi
B. S. Acharya
L. Adamczyk
D. L. Adams
T. N. Addy
J. Adelman
S. Adomeit
P. Adragna
T. Adye
S. Aefsky
J. A. Aguilar-Saavedra
M. Agustoni
M. Aharrouche
S. P. Ahlen
F. Ahles
A. Ahmad
M. Ahsan
G. Aielli
T. Akdogan
T. P. A. Åkesson
G. Akimoto
A. V. Akimov
M. S. Alam
M. A. Alam
J. Albert
S. Albrand
M. Aleksa
I. N. Aleksandrov
F. Alessandria
C. Alexa
G. Alexander
G. Alexandre
T. Alexopoulos
M. Alhroob
M. Aliev
G. Alimonti
J. Alison
机构：
[1] SUNY Albany,Physics Department
[2] University of Alberta,Department of Physics
[3] Ankara University,Department of Physics
[4] Dumlupinar University,Department of Physics
[5] Gazi University,Department of Physics
[6] TOBB University of Economics and Technology,Division of Physics
[7] Turkish Atomic Energy Authority,Department of Physics
[8] LAPP,Department of Physics
[9] CNRS/IN2P3 and Université de Savoie,Physics Department
[10] High Energy Physics Division,Physics Department
[11] Argonne National Laboratory,Institute of Physics
[12] University of Arizona,Vinca Institute of Nuclear Sciences
[13] The University of Texas at Arlington,Department for Physics and Technology
[14] University of Athens,Department of Physics
[15] National Technical University of Athens,Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics
[16] Institute of Physics,School of Physics and Astronomy
[17] Azerbaijan Academy of Sciences,Department of Physics
[18] Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA,Division of Physics
[19] University of Belgrade,Department of Physics Engineering
[20] University of Belgrade,Department of Physics
[21] University of Bergen,Dipartimento di Fisica
[22] Physics Division,Physikalisches Institut
[23] Lawrence Berkeley National Laboratory and University of California,Department of Physics
[24] Humboldt University,Department of Physics
[25] University of Bern,Instituto de Fisica
[26] University of Birmingham,Physics Department
[27] Bogazici University,Departamento de Física
[28] Dogus University,Cavendish Laboratory
[29] Gaziantep University,Department of Physics
[30] Istanbul Technical University,Enrico Fermi Institute
[31] INFN Sezione di Bologna,Departamento de Física
[32] Università di Bologna,Departamento de Física
[33] University of Bonn,Department of Modern Physics
[34] Boston University,Department of Physics
[35] Brandeis University,School of Physics
[36] Universidade Federal do Rio De Janeiro COPPE/EE/IF,Nevis Laboratory
[37] Federal University of Juiz de Fora (UFJF),Niels Bohr Institute
[38] Federal University of Sao Joao del Rei (UFSJ),Dipartimento di Fisica
[39] Universidade de Sao Paulo,Physics Department
[40] Brookhaven National Laboratory,Physics Department
[41] National Institute of Physics and Nuclear Engineering,Institut für Kern
[42] University Politehnica Bucharest,und Teilchenphysik
[43] West University in Timisoara,Department of Physics
[44] Universidad de Buenos Aires,SUPA
[45] University of Cambridge, School of Physics and Astronomy
[46] Carleton University,Section de Physique
[47] CERN,Dipartimento di Fisica
[48] University of Chicago,E. Andronikashvili Institute of Physics
[49] Pontificia Universidad Católica de Chile,High Energy Physics Institute
[50] Universidad Técnica Federico Santa María,SUPA
来源：
Journal of High Energy Physics | / 2012卷 / 9期
关键词：
Hadron-Hadron Scattering;
D O I：
10.1007/JHEP09(2012)041
中图分类号：
学科分类号：
摘要：
A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb−1 of proton-proton collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \sqrt {s} = 7 $\end{document} TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ t\overline t $\end{document} invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ t\overline t $\end{document} production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded.
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