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Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the q q-bar l+l- final state (CROSBI ID 201154)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Chatrchyan, S. ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko et al. Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the q q-bar l+l- final state // Physics letters. B, 718 (2013), 4/5; 1208-1228. doi: 10.1016/j.physletb.2012.11.063

Podaci o odgovornosti

Chatrchyan, S. ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Đurić, Senka ; Kadija, Krešo ; Luetić, Jelena ; Morović, Srećko ; ... ; Mekterović, Darko ; ... ; Swanson, J.

engleski

Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the q q-bar l+l- final state

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 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.

CMS; physics; Kaluza–Klein; graviton

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

718 (4/5)

2013.

1208-1228

objavljeno

0370-2693

10.1016/j.physletb.2012.11.063

Povezanost rada

Fizika

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