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https://hdl.handle.net/10316/103340
Título: | Search for exotic decays of the Higgs boson into $b\bar{b}$ and missing transverse momentum in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector | Autor: | Fiolhais, M. C. N. Gonçalo, J. R. Wolters, H. Veloso, F. ATLAS Collaboration |
Palavras-chave: | Hadron-Hadron scattering (experiments); Supersymmetry; Beyond Standard Model | Data: | 6-Set-2021 | Título da revista, periódico, livro ou evento: | Journal of High Energy Physics | Volume: | 2022 | Número: | 1 | Resumo: | A search for the exotic decay of the Higgs boson ($H$) into a $b\bar{b}$ resonance plus missing transverse momentum is described. The search is performed with the ATLAS detector at the Large Hadron Collider using 139 $\mathrm{fb}^{-1}$ of $pp$ collisions at $\sqrt{s} = 13$ TeV. The search targets events from $ZH$ production in an NMSSM scenario where $H \rightarrow \tilde{\chi}^{0}_{2}\tilde{\chi}^{0}_{1}$, with $\tilde{\chi}^{0}_{2} \rightarrow {a} \tilde{\chi}^{0}_{1}$, where $a$ is a light pseudoscalar Higgs boson and $\tilde{\chi}^{0}_{1,2}$ are the two lightest neutralinos. The decay of the $a$ boson into a pair of $b$-quarks results in a peak in the dijet invariant mass distribution. The final-state signature consists of two leptons, two or more jets, at least one of which is identified as originating from a $b$-quark, and missing transverse momentum. Observations are consistent with Standard Model expectations and upper limits are set on the product of cross section times branching ratio for a three-dimensional scan of the masses of the $\tilde{\chi}^{0}_{2}$, $\tilde{\chi}^{0}_{1}$ and $a$ boson. | Descrição: | Comments: 38 pages in total, author list starting on page 22, 4 figures, 2 tables, published in JHEP. All figures, including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2018-07/ | URI: | https://hdl.handle.net/10316/103340 | ISSN: | 1029-8479 | DOI: | 10.1007/JHEP01(2022)063 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Search-for-exotic-decays-of-the-Higgs-boson-into-b-b-and-missing-transverse-momentum-in-pp-collisions-at-s--13-TeV-with-the-ATLAS-detectorJournal-of-High-Energy-Physics.pdf | 1.88 MB | Adobe PDF | Ver/Abrir |
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