Artigo
Search for new physics in events with opposite-sign leptons, jets, and missing transverse energy in pp collisions at s=7 TeV
Fecha
2013-01-08Registro en:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 718, n. 3, p. 815-840, 2013.
0370-2693
10.1016/j.physletb.2012.11.036
WOS:000314259500013
2-s2.0-84871596234
2-s2.0-84871596234.pdf
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 Físicas (CBPF)
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
Charles University
Egyptian Network of High Energy Physics
National Institute of Chemical Physics and Biophysics
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
CEA/Saclay
IN2P3-CNRS
Université de Haute Alsace Mulhouse, CNRS/IN2P3
Centre de Calcul de l'Institut National de Physique Nucleaire et de Physique des Particules (IN2P3)
Institut de Physique Nucléaire de Lyon
Tbilisi State University
I. Physikalisches Institut
III. Physikalisches Institut A
III. 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
Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research - EHEP
Tata Institute of Fundamental Research - HECR
Institute for Research in Fundamental Sciences (IPM)
INFN Sezione di Bari
Università di Bari
Politecnico di Bari
INFN Sezione di Bologna
Università di Bologna
INFN Sezione di Catania
Università di Catania
INFN Sezione di Firenze
Università di Firenze
INFN Laboratori Nazionali di Frascati
INFN Sezione di Genova
INFN Sezione di Milano-Bicocca
Università di Milano-Bicocca
INFN Sezione di Napoli
Università di Napoli Federico II
INFN Sezione di Padova
Università di Padova
Università di Trento (Trento)
INFN Sezione di Pavia
Università di Pavia
INFN Sezione di Perugia
Università di Perugia
INFN Sezione di Pisa
Università di Pisa
Scuola Normale Superiore di Pisa
INFN Sezione di Roma
Università di Roma La Sapienza
INFN Sezione di Torino
Università di Torino
Università del Piemonte Orientale (Novara)
INFN Sezione di Trieste
Università di Trieste
Kangwon National University
Kyungpook National University
Institute for Universe and Elementary Particles
Konkuk University
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 (LIP)
Joint Institute for Nuclear Research
Petersburg Nuclear Physics Institute
Institute for Nuclear Research
Institute for Theoretical and Experimental Physics (ITEP)
Moscow State University
P.N. Lebedev Physical Institute
Institute for High Energy Physics
Faculty of Physics and Vinca Institute of Nuclear Sciences
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
Universidad de Oviedo
CSIC-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
Istanbul Technical University
Kharkov Institute of Physics and Technology
University of Bristol
Rutherford Appleton Laboratory
Imperial College
Brunel University
Baylor University
The University of Alabama
Boston University
Brown University
University of California, Davis
University of California, Los Angeles
University of California, Riverside (UCR)
University of California
University of California, Santa Barbara
California Institute of Technology
Carnegie Mellon University
University of Colorado at Boulder
Cornell University
Fairfield University
Fermi National Accelerator Laboratory
University of Florida
Florida International University
Florida State University
Florida Institute of Technology
University of Illinois at Chicago (UIC)
The University of Iowa
Johns Hopkins University
University of Kansas (KU)
Kansas State University
Lawrence Livermore National Laboratory
University of Maryland
Massachusetts Institute of Technology (MIT)
University of Minnesota
University
University of Nebraska-Lincoln
State University of New York at Buffalo
Northeastern University
Northwestern University (NU)
University of Notre Dame
The Ohio State University
Princeton University
University of Puerto Rico
Purdue University
Purdue University Calumet
Rice University
University of Rochester
The Rockefeller University
Rutgers, the State University of New Jersey
University of Tennessee
Texas A and M University
Texas Tech University
Vanderbilt University
University of Virginia (UVA)
Wayne State University
University of Wisconsin
Resumen
A search is presented for physics beyond the standard model (BSM) in final states with a pair of opposite-sign isolated leptons accompanied by jets and missing transverse energy. The search uses LHC data recorded at a center-of-mass energy s=7 TeV with the CMS detector, corresponding to an integrated luminosity of approximately 5 fb-1. Two complementary search strategies are employed. The first probes models with a specific dilepton production mechanism that leads to a characteristic kinematic edge in the dilepton mass distribution. The second strategy probes models of dilepton production with heavy, colored objects that decay to final states including invisible particles, leading to very large hadronic activity and missing transverse energy. No evidence for an event yield in excess of the standard model expectations is found. Upper limits on the BSM contributions to the signal regions are deduced from the results, which are used to exclude a region of the parameter space of the constrained minimal supersymmetric extension of the standard model. Additional information related to detector efficiencies and response is provided to allow testing specific models of BSM physics not considered in this Letter. © 2012 CERN.