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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; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; ... mehr

Abstract (englisch): 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.

Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1007/JHEP01(2017)076
ISSN: 1029-8479, 1126-6708
URN: urn:nbn:de:swb:90-657410
KITopen ID: 1000065741
Erschienen in Journal of high energy physics
Band 2017
Heft 1
Seiten 76
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Lizenz: Dieses Werk ist lizenziert unter CC BY 4.0 International
Schlagworte Beyond Standard Model; Hadron-Hadron scattering (experiments)
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