Compact Muon Solenoid
LHC, CERN
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| CMS-EXO-11-102 ; CERN-PH-EP-2012-232 | ||
| Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the $ \mathrm{ q \bar{q} } \ell^+ \ell^- $ final state | ||
| CMS Collaboration | ||
| 17 September 2012 | ||
| Phys. Lett. B 718 (2013) 1208 | ||
| Abstract: 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 inverse femtobarn 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 as a novel feature of the analysis, 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. | ||
| Links: e-print arXiv:1209.3807 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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