Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/87783
Título: | Observation of electroweak production of two jets and a Z-boson pair |
Autor(es): | Castro, Nuno Filipe Onofre, A. ATLAS Collaboration |
Data: | 2023 |
Editora: | Nature Research |
Revista: | Nature Physics |
Citação: | ATLAS Collaboration, Aad, G., Abbott, B., Abbott, D. C., Abed Abud, A., Abeling, K., … Zwalinski, L. (2023, February 9). Observation of electroweak production of two jets and a Z-boson pair. Nature Physics. Springer Science and Business Media LLC. http://doi.org/10.1038/s41567-022-01757-y |
Resumo(s): | Electroweak symmetry breaking explains the origin of the masses of elementary particles through their interactions with the Higgs field. Besides the measurements of the Higgs boson properties, the study of the scattering of massive vector bosons with spin 1 allows the nature of electroweak symmetry breaking to be probed. Among all processes related to vector-boson scattering, the electroweak production of two jets and a Z-boson pair is a rare and important one. Here we report the observation of this process from proton–proton collision data corresponding to an integrated luminosity of 139 fb−1 recorded at a centre-of-mass energy of 13 TeV with the ATLAS detector at the Large Hadron Collider. We consider two different final states originating from the decays of the Z-boson pair: one containing four charged leptons and another containing two charged leptons and two neutrinos. The hypothesis of no electroweak production is rejected with a statistical significance of 5.7σ, and the measured cross-section for electroweak production is consistent with the Standard Model prediction. In addition, we report cross-sections for inclusive production of a Z-boson pair and two jets for the two final states. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/87783 |
DOI: | 10.1038/s41567-022-01757-y |
ISSN: | 1745-2473 |
e-ISSN: | 1745-2481 |
Versão da editora: | https://www.nature.com/articles/s41567-022-01757-y |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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s41567-022-01757-y.pdf | 2,09 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons