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; Journal of High Energy Physics; Vol. 2020, iss. 6
| Parent link: | Journal of High Energy Physics Vol. 2020, iss. 6.— 2020.— [76, 41 p.] |
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| Corporate Authors: | , |
| Andre forfattere: | , , , , , , , |
| Summary: | Title screen A measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Z?jj) 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 Z?jj 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 sv = 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 sv = 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 Z?jj production and bounds are given on quartic vector boson interactions in the framework of dimension-eight effective field theory operators. Режим доступа: по договору с организацией-держателем ресурса |
| Sprog: | engelsk |
| Udgivet: |
2020
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| Fag: | |
| Online adgang: | https://doi.org/10.1007/JHEP06(2020)076 |
| Format: | MixedMaterials Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662245 |