KIT | KIT-Bibliothek | Impressum | Datenschutz

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.; Krätschmer, I.; ... mehr

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.

Open Access Logo


Volltext §
DOI: 10.5445/IR/1000065741
Originalveröffentlichung
DOI: 10.1007/JHEP01(2017)076
Scopus
Zitationen: 11
Web of Science
Zitationen: 3
Coverbild
Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 1029-8479, 1126-6708
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
Schlagworte Beyond Standard Model, Hadron-Hadron scattering (experiments)
Nachgewiesen in Web of Science
Scopus
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page