Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at √s = 13 TeV and constraints on anomalous quartic couplings
dc.contributor.author | Sirunyan, A. M. | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2020-08-04T03:38:32Z | pt_BR |
dc.date.issued | 2020 | pt_BR |
dc.identifier.issn | 1029-8479 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/212568 | pt_BR |
dc.description.abstract | A measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Zγjj) in proton-proton collisions. The Z boson candidates are selected through their decay into a pair of electrons or muons. The process of interest, electroweak Zγjj production, is isolated by selecting events with a large dijet mass and a large pseudorapidity gap between the two jets. The measurement is based on data collected at the CMS experiment at √ s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1 . The observed significance of the signal is 3.9 standard deviations, where a significance of 5.2 standard deviations is expected in the standard model. These results are combined with published results by CMS at √ s = 8 TeV, which leads to observed and expected respective significances of 4.7 and 5.5 standard deviations. From the 13 TeV data, a value is obtained for the signal strength of electroweak Zγjj production and bounds are given on quartic vector boson interactions in the framework of dimension-eight effective field theory operators. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | The journal of high energy physics. Trieste. No. 6 (June 2020), 76, 41 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Electroweak interaction | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.subject | Hadron-Hadron scattering (experiments) | en |
dc.subject | Bosons Z | pt_BR |
dc.title | Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at √s = 13 TeV and constraints on anomalous quartic couplings | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001115876 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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