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https://hdl.handle.net/10316/103457
Título: | Search for associated production of a $Z$ boson with an invisibly decaying Higgs boson or dark matter candidates at $\sqrt{s}=13$ TeV with the ATLAS detector | Autor: | Fiolhais, M. C. N. Gonçalo, J. R. Veloso, F. Wolters, H. ATLAS Collaboration |
Data: | 16-Nov-2021 | Editora: | Elsevier B.V. | Título da revista, periódico, livro ou evento: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Volume: | 829 | Resumo: | A search for invisible decays of the Higgs boson as well as searches for dark matter candidates, produced together with a leptonically decaying $Z$ boson, are presented. The analysis is performed using proton-proton collisions at a centre-of-mass energy of 13 TeV, delivered by the LHC, corresponding to an integrated luminosity of 139 fb$^{-1}$ and recorded by the ATLAS experiment. Assuming Standard Model cross-sections for $ZH$ production, the observed (expected) upper limit on the branching ratio of the Higgs boson to invisible particles is found to be 19% (19%) at the 95% confidence level. Exclusion limits are also set for simplified dark matter models and two-Higgs-doublet models with an additional pseudoscalar mediator. | Descrição: | 43 pages in total, author list starting page 27, 8 figures, 2 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-26/ | URI: | https://hdl.handle.net/10316/103457 | ISSN: | 03702693 | DOI: | 10.1016/j.physletb.2022.137066 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0370269322002003-main.pdf | 2.07 MB | Adobe PDF | Ver/Abrir |
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