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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
CMS Collaboration
CMS Collaboration
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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.
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Date
2017-01
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Springer Verlag
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Keywords
Beyond Standard Model, Hadron-Hadron scattering (experiments)
Citation
The CMS collaboration, Khachatryan, V., Sirunyan, A.M. et al. J. High Energ. Phys. (2017) 2017: 76. https://doi.org/10.1007/JHEP01(2017)076