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Measurement of the Wγ and Zγ< Inclusive Cross Sections in pp Collisions at √s = 7 TeV and Limits on Anomalous Triple Gauge Boson Couplings

Author(s)
Apyan, Aram; Busza, Wit; Cali, Ivan Amos; Chan, M.; Di Matteo, Leonardo; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Gulhan, Doga Can; Kim, Y.; Klute, Markus; Lai, Yue Shi; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Velicanu, Dragos Alexandru; Wyslouch, Boleslaw; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Roland, Christof E; Roland, Gunther M; Stoeckli, Fabian; Sumorok, Konstanty C; Wolf, Roger; Yang, Mingming; Wyslouch, Victoria; Bauer, Gerry P; Dutta, Valentina; Levin, Andrew Michael; Luckey Jr, P David; ... Show more Show less
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Abstract
Measurements of Wγ and Zγ production in proton-proton collisions at √s = 7  TeV are used to extract limits on anomalous triple gauge couplings. The results are based on data recorded by the CMS experiment at the LHC that correspond to an integrated luminosity of 5.0  fb[superscript −1]. The cross sections are measured for photon transverse momenta p[γ over T] > 15  GeV, and for separations between photons and final-state charged leptons in the pseudorapidity-azimuthal plane of ΔR(ℓ,γ) > 0.7 in ℓνγ and ℓℓγ final states, where ℓ refers either to an electron or a muon. A dilepton invariant mass requirement of mℓℓ > 50  GeV is imposed for the Zγ process. No deviations are observed relative to predictions from the standard model, and limits are set on anomalous WWγ, ZZγ, and Zγγ triple gauge couplings.
Date issued
2014-05
URI
http://hdl.handle.net/1721.1/89049
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Measurement of the Wγ and Zγ Inclusive Cross Sections in pp Collisions at √s = 7 TeV and Limits on Anomalous Triple Gauge Boson Couplings.” Phys. Rev. D 89, no. 9 (May 2014). © 2014 CERN, for the CMS Collaboration
Version: Final published version
ISSN
1550-7998
1550-2368

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