Artículos de revistas
Search for large extra dimensions in dimuon and dielectron events in pp collisions at root s=7 TeV
Fecha
2012-05-01Registro en:
Physics Letters B. Amsterdam: Elsevier B.V., v. 711, n. 1, p. 15-34, 2012.
0370-2693
10.1016/j.physletb.2012.03.029
WOS:000303306700004
Autor
CERN
Yerevan Phys Inst
Inst Hochenergiephys 0eAW
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)
Inst Nucl Energy Res
Univ Sofia
Inst High Energy Phys
Peking Univ
Universidad de los Andes
Tech Univ Split
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Institución
Resumen
Results are presented from a search for large, extra spatial dimensions in events with either two isolated muons or two isolated electrons. The data are from proton-proton interactions at root s = 7 TeV collected with the CMS detector at the LHC. The size of the data sample corresponds to an integrated luminosity of approximately 2 fb(-1). The observed dimuon and dielectron mass spectra are found to be consistent with standard-model expectations. Depending on the number of extra dimensions, the 95% confidence level limits from the combined mu mu and ee channels range from M-s > 2.4 TeV to M-s > 3.8 TeV, where M-s characterizes the scale for the onset of quantum gravity. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.