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Search for high-mass Z? resonances in e+e?? and ? + ? ?? final states in proton-proton collisions at ?s=8 and 13 TeV

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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Journal of High Energy Physics Vol. 2017, Iss. 01, Art. Num. 076

Editorial: Springer Verlag

 Fecha de publicación: 01/01/2017

Nº de páginas: 33

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP01(2017)076

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP01(2017)076