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Title
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Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the final state
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| Results are presented from a search for a narrow, spin-2 resonance decaying into a pair of Z bosons, with one Z-boson decaying into leptons (e(+)e(-) or mu(+)mu(-)) and the other into jets. An example of such a resonance is the Kaluza-Klein graviton, G(KK), predicted in Randall-Sundrum models. The analysis is based on a 4.9 fb(-1) sample of proton-proton collisions at a center-of-mass energy of 7 TeV, collected with the CMS detector at the LHC. Kinematic and topological properties including decay angular distributions are used to discriminate between signal and background. No evidence for a resonance is observed, and upper limits on the production cross sections times branching fractions are set. In two models that predict Z-boson spin correlations in graviton decays, graviton masses are excluded lower than a value which varies between 610 and 945 GeV, depending on the model and the strength of the graviton couplings. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved. |
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Language
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English
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Source (journal)
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Physics letters : B. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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2013
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ISSN
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0370-2693
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DOI
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10.1016/J.PHYSLETB.2012.11.063
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Volume/pages
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718
:4-5
(2013)
, p. 1208-1228
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ISI
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000314554300010
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Full text (Publisher's DOI)
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Full text (open access)
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