Artículos de revistas
Search for large extra dimensions in dimuon and dielectron events in pp collisions at root s=7 TeV
Date
2012-05-01Registration in:
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
Author
CERN
Yerevan Phys Inst
Inst Hochenergiephys 0eAW
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Vrije Univ Brussel
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Abstract
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.