Search for a Narrow, Spin-2 Resonance Decaying to a Pair of Z Bosons in the q[bar over q]ℓ[superscript +]ℓ[superscript −] Final State

Search for a Narrow, Spin-2 Resonance Decaying to a Pair of Z Bosons in the q[bar over q]ℓ[superscript +]ℓ[superscript −] 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[superscript +]e[superscript −] or μ[superscript +]μ[superscript −]) and the other into jets. An example of such a resonance is the Kaluza–Klein graviton, G[s...

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Bibliographic Details
Main Authors: Apyan, Aram, Bendavid, Joshua L., Busza, Wit, Butz, Erik M., Cali, Ivan Amos, Chan, M., Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Hahn, Kristian Allan, Kim, Y., Klute, Markus, Krajczar, Krisztian F., Li, W., Ma, Teng, Nahn, Steven, Paus, Christoph M. E., Ralph, Duncan Kelley, Rudolph, Matthew Scott, Stephans, George S. F., Sung, Kevin Kai Hong, Velicanu, Dragos Alexandru, Wenger, Edward Allen, Wyslouch, Boleslaw, Yilmaz, Yetkin, Yoon, A. S., Zanetti, Marco, Luckey Jr, P David, Roland, Christof E, Roland, Gunther M, Stoeckli, Fabian, Sumorok, Konstanty C, Wolf, Roger, Yang, Mingming, Bauer, Gerry P, Dutta, Valentina
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: Elsevier 2014
Online Access:http://hdl.handle.net/1721.1/91905
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0001-6332-5839
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0002-0869-5631
Description
Summary: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[superscript +]e[superscript −] or μ[superscript +]μ[superscript −]) and the other into jets. An example of such a resonance is the Kaluza–Klein graviton, G[subscript KK], predicted in Randall–Sundrum models. The analysis is based on a 4.9 fb[superscript −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.

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