Search for High-Mass Zγ Resonances in e⁺e−γ and μ⁺ μ ⁻γ Final States in Proton-Proton Collisions at √s = 8 and 13 TeV
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Khachatryan2017_Article_SearchForHigh-massZγResonances.pdf
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987.22 KB
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Author(s)
CMS Collaboration
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Apyan, Aram
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Date Issued
January 2017
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
Khachatryan, V. et al. “Search for High-Mass Zγ Resonances in e⁺e−γ and μ⁺ μ ⁻γ Final States in Proton-Proton Collisions at √s = 8 and 13 TeV.” Journal of High Energy Physics 2017, 1 (January 2017): 76 © 2017 The Author(s)
Version
Final published version
Abstract
This paper describes the search for a high-mass narrow-width scalar particle decaying into a Z boson and a photon. The analysis is performed using proton-proton collision data recorded with the CMS detector at the LHC at center-of-mass energies of 8 and 13 TeV, corresponding to integrated luminosities of 19.7 and 2.7 fb⁻¹, respectively. The Z bosons are reconstructed from opposite-sign electron or muon pairs. No statistically significant deviation from the standard model predictions has been found in the 200-2000 GeV mass range. Upper limits at 95% confidence level have been derived on the product of the scalar particle production cross section and the branching fraction of the Z decaying into electrons or muons, which range from 280 to 20 fb for resonance masses between 200 and 2000 GeV. Keywords: Beyond Standard Model; Hadron-Hadron scattering (experiments)
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/JHEP01(2017)076
