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

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 - Jan 1 2017

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collisions
protons
muons
bosons
scalars
particle production
center of mass
confidence
electrons
luminosity
deviation
detectors
cross sections
photons
products
predictions
energy

Keywords

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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

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.

In: Journal of High Energy Physics, Vol. 2017, No. 1, 76, 01.01.2017.

Research output: Contribution to journalArticle

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AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Asilar, E.

AU - Bergauer, T.

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AU - Schieck, J.

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AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Van Spilbeeck, A.

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AU - D’Hondt, J.

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AB - 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.]

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