par Chatrchyan, Serguei;Clerbaux, Barbara 
;De Lentdecker, Gilles ;Dero, Vincent ;Gay, Arnaud ;Hreus, Tomas ;Leonard, Alexandre ;Marage, Pierre ;Mohammadi, Abdollah ;Reis, Thomas ;Thomas, Laurent ;Vander Marcken, G;Vander Velde, Catherine ;Vanlaer, Pascal ;Wang, Jian ; [et al.]
Référence Physics letters. Section B, 718, 4-5, page (1208-1228)
Publication Publié, 2013
;De Lentdecker, Gilles ;Dero, Vincent ;Gay, Arnaud ;Hreus, Tomas ;Leonard, Alexandre ;Marage, Pierre ;Mohammadi, Abdollah ;Reis, Thomas ;Thomas, Laurent ;Vander Marcken, G;Vander Velde, Catherine ;Vanlaer, Pascal ;Wang, Jian ; [et al.]Référence Physics letters. Section B, 718, 4-5, page (1208-1228)
Publication Publié, 2013
Article révisé par les pairs
| Résumé : | 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 μ+μ-) and the other into jets. An example of such a resonance is the Kaluza-Klein graviton, GKK, 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. © 2012 CERN. |
