Naslov
Search for high-mass Z-gamma resonances in e+e-gamma and mu+mu-gamma final states in proton-proton collisions at sqrt(s) = 8 and 13 TeV

Autori
Khachatryan, Vardan ; ... ; Morović, Srećko ; Luetić, Jelena ; Đurić, Senka ; Godinović, Nikola ; Lelas, Damir ; Puljak, Ivica ; Ribeiro Cipriano, Pedro Miguel ; Šćulac, Toni ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Ferenček, Dinko ; Kadija, Krešo ; Mićanović, Saša ; Sudić, Lucija ; Šuša, Tatjana ; ... ; Woods, Nate

Kolaboracija
CMS Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 2017 (2017), 1; 076, 33

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
High energy physics, Experimental particle physics, LHC, CMS, Standard Model

Sažetak
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 inverse femtobarns, 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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