Artículos de revistas
Search for pair production of second-generation scalar leptoquarks in pp collisions at √s=7TeV
Fecha
2011-05-17Registro en:
Physical Review Letters, v. 106, n. 20, 2011.
0031-9007
1079-7114
10.1103/PhysRevLett.106.201803
2-s2.0-84874813685
Autor
Yerevan Physics Institute
Institut für Hochenergiephysik der OeAW
National Centre for Particle and High Energy Physics
Universiteit Antwerpen
Vrije Universiteit Brussel
Université Libre de Bruxelles
Ghent University
Université Catholique de Louvain
Université de Mons
Centro Brasileiro de Pesquisas Fisicas
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (UNESP)
Institute for Nuclear Research and Nuclear Energy
University of Sofia
Institute of High Energy Physics
Peking University
Universidad de Los Andes
Technical University of Split
University of Split
Institute Rudjer Boskovic
University of Cyprus
Egyptian Network of High Energy Physics
National Institute of Chemical Physics and Biophysics
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
CNRS
Saclay
IN2P3-CNRS
Université de Haute Alsace Mulhouse
L'Institut National de Physique Nucleaire et de Physique des Particules (IN2P3)
Institut de Physique Nucléaire de Lyon
Academy of Science
Tbilisi State University
I. Physikalisches Institut
Physikalisches Institut A
Physikalisches Institut B
Deutsches Elektronen-Synchrotron
University of Hamburg
Institut für Experimentelle Kernphysik
Institute of Nuclear Physics Demokritos
University of Athens
University of Ioánnina
KFKI Research Institute for Particle and Nuclear Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
Panjab University
University of Delhi
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research - EHEP
HECR
Institute for Research and Fundamental Sciences (IPM)
Politecnico di Bari
INFN Sezione di Bari
Università di Bari
Università di Bologna
INFN Sezione di Bologna
Università di Catania
INFN Sezione di Catania
Università di Firenze
INFN Sezione di Firenze
INFN Laboratori Nazionali di Frascati
INFN Sezione di Genova
Università di Milano-Bicocca
INFN Sezione di Milano-Biccoca
Università di Napoli Federico II
INFN Sezione di Napoli
Università di Trento (Trento)
INFN Sezione di Padova
Università di Padova
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Scuola Normale Superiore di Pisa
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INFN Sezione di Roma
Università del Piemonte Orientale (Novara)
INFN Sezione di Torino
Università di Torino
Università di Trieste
INFN Sezione di Trieste
Kangwon National University
Kyungpook National University
Institute for Universe and Elementary Particles
Korea University
University of Seoul
Sungkyunkwan University
Vilnius University
Centro de Investigacion y de Estudios Avanzados del IPN
Universidad Iberoamericana
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosí
University of Auckland
University of Canterbury
Quaid-I-Azam University
University of Warsaw
Soltan Institute for Nuclear Studies
Laboratório de Instrumentação e Física Experimental de Partículas
Joint Institute for Nuclear Research
Petersburg Nuclear Physics Institute
Institute for Nuclear Research
Institute for Theoretical and Experimental Physics
Moscow State University
P.N. Lebedev Physical Institute
Institute for High Energy Physics
Vinca Institute of Nuclear Sciences
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
Universidad de Oviedo
Universidad de Cantabria
European Organization for Nuclear Research
Paul Scherrer Institut
ETH Zurich
Universität Zürich
National Central University
National Taiwan University (NTU)
Cukurova University
Physics Department
Bogazici University
Kharkov Institute of Physics and Technology
University of Bristol
Rutherford Appleton Laboratory
Imperial College
Brunel University
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Facoltà Ingegneria Università di Roma La Sapienza
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Faculty of Physics of University of Belgrade
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Gaziosmanpasa University
Adiyaman University
Mersin University
Izmir Institute of Technology
Kafkas University
Suleyman Demirel University
Ege University
University of Southampton
Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH)
Institución
Resumen
A search for pair production of second-generation scalar leptoquarks in the final state with two muons and two jets is performed using proton-proton collision data at √s=7TeV collected by the CMS detector at the LHC. The data sample used corresponds to an integrated luminosity of 34pb-1. The number of observed events is in good agreement with the predictions from the standard model processes. An upper limit is set on the second-generation leptoquark cross section times β2 as a function of the leptoquark mass, and leptoquarks with masses below 394 GeV are excluded at a 95% confidence level for β=1, where β is the leptoquark branching fraction into a muon and a quark. These limits are the most stringent to date.© 2011 American Physical Society.