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EnglishThis 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.
| Titolo: | 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: | ||
| Data di pubblicazione: | 2017 | |
| Stato di pubblicazione: | Pubblicato | |
| Rivista: | ||
| 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. | |
| Handle: | http://hdl.handle.net/11368/2893470 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/JHEP01(2017)076 | |
| URL: | http://link.springer.com/article/10.1007%2FJHEP01%282017%29076 | |
| Appare nelle tipologie: | 1.1 Articolo in Rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| art_10.1007_JHEP01(2017)076.pdf | Documento in Versione Editoriale |  | Open Access Visualizza/Apri |
http://hdl.handle.net/11368/2893470
