Artigo
Search for physics beyond the standard model using multilepton signatures in pp collisions at root s=7 TeV
Fecha
2011-10-25Registro en:
Physics Letters B. Amsterdam: Elsevier B.V., v. 704, n. 5, p. 411-433, 2011.
0370-2693
10.1016/j.physletb.2011.09.047
WOS:000296549200006
Autor
Yerevan Phys Inst
Inst Hochenergiephys OeAW
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Vrije Univ Brussel
Univ Libre Brussels
Univ Ghent
Catholic Univ Louvain
Univ Mons
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (Unesp)
Bulgarian Acad Sci
Univ Sofia
Inst High Energy Phys
Peking Univ
Universidad de los Andes
Tech Univ Split
Univ Split
Rudjer Boskovic Inst
Univ Cyprus
Charles Univ Prague
Egyptian Network High Energy Phys
NICPB
Univ Helsinki
Helsinki Inst Phys
Lappeenranta Univ Technol
IN2P3 CNRS
CEA Saclay
Univ Haute Alsace Mulhouse
Inst Natl Phys Nucl & Phys Particules IN2P3
Univ Lyon 1
Tbilisi State Univ
RWTH Aachen University
DESY
Univ Hamburg
Univ Karlsruhe
Inst Nucl Phys Demokritos
Univ Athens
Univ Ioannina
KFKI Res Inst Particle & Nucl Phys
Inst Nucl Res ATOMKI
Univ Debrecen
Panjab Univ
University of Delhi
Saha Inst Nucl Phys
Bhabha Atom Res Ctr
Tata Inst Fundamental Res EHEP
Tata Inst Fundamental Res HECR
Inst Res & Fundamental Sci IPM
INFN Sez Bari
Univ Bari
Politecn Bari
INFN Sez Bologna
Univ Bologna
INFN Sez Catania
Univ Catania
INFN Sez Firenze
Univ Florence
INFN Lab Nazl Frascati
INFN Sez Genova
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Univ Milano Bicocca
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Univ Naples Federico II
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Univ Padua
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Univ Pavia
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Univ Roma La Sapienza
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Moscow MV Lomonosov State Univ
PN Lebedev Phys Inst
University of Belgrade
Vinca Inst Nucl Sci
Ctr Invest Energet Medioambientales & Tecnol CIEM
Univ Autonoma Madrid
Univ Oviedo
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CERN
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ETH
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Resumen
A search for physics beyond the standard model in events with at least three leptons and any number of jets is presented. The data sample corresponds to 35 pb(-1) of integrated luminosity in pp collisions at root s = 7 TeV collected by the CMS experiment at the LHC. A number of exclusive multileptonic channels are investigated and standard model backgrounds are suppressed by requiring sufficient missing transverse energy, invariant mass inconsistent with that of the Z boson, or high jet activity. Control samples in data are used to ascertain the robustness of background evaluation techniques and to minimise the reliance on simulation. The observations are consistent with background expectations. These results constrain previously unexplored regions of supersymmetric parameter space. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.