Search for high-mass Zγ resonances in e+eγ and μ + μ γ final states in proton-proton collisions at √s=8 and 13 TeV

The 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.[Figure not available: see fulltext.]

Original languageEnglish
Article number76
JournalJournal of High Energy Physics
Volume2017
Issue number1
DOIs
Publication statusPublished - 1 Jan 2017

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Keywords

  • Beyond Standard Model
  • Hadron-Hadron scattering (experiments)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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