Artículos de revistas
Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at s=8 TeV
Fecha
2015-05-22Registro en:
Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 91, n. 9, 2015.
1550-2368
1550-7998
10.1103/PhysRevD.91.092005
2-s2.0-84930684140
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)
Universidade Federal do ABC (UFABC)
Institute for Nuclear Research and Nuclear Energy
University of Sofia
Institute of High Energy Physics
Peking University
Universidad de Los Andes
Mechanical Engineering and Naval Architecture
Faculty of Science
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
CNRS/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
NCSR Demokritos
University of Athens
University of Ioánnina
Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
National Institute of Science Education and Research
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research
Institute for Research in Fundamental Sciences (IPM)
University College Dublin
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Institución
Resumen
A search for new physics in proton-proton collisions having final states with an electron or muon and missing transverse energy is presented. The analysis uses data collected in 2012 with the CMS detector, at an LHC center-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of 19.7 fb-1. No significant deviation of the transverse mass distribution of the charged lepton-neutrino system from the standard model prediction is found. Mass exclusion limits of up to 3.28 TeV at 95% confidence level for a W'-boson with the same couplings as that of the standard model W-boson are determined. Results are also derived in the framework of split universal extra dimensions, and exclusion limits on Kaluza-Klein WKK(2) states are found. The final state with large missing transverse energy also enables a search for dark matter production with a recoiling W-boson, with limits set on the mass and the production cross section of potential candidates. Finally, limits are established for a model including interference between a left-handed W'-boson and the standard model W-boson and for a compositeness model.