Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/87864
Título: | Search for a light charged Higgs boson in t → H<SUP>±</SUP>b decays, with H<SUP>±</SUP> → cb, in the lepton plus jets final state in proton-proton collisions at √s=13 TeV with the ATLAS detector |
Autor(es): | Castro, Nuno Filipe Onofre, A. ATLAS Collaboration |
Data: | 2023 |
Editora: | Springer |
Revista: | Journal of High Energy Physics |
Citação: | Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Collaboration, A. (2023). Search for a light charged Higgs boson in t → H<SUP>±</SUP>b decays, with H<SUP>±</SUP> → cb, in the lepton plus jets final state in proton-proton collisions at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics(9). doi: 10.1007/jhep09(2023)004 |
Resumo(s): | A search for a charged Higgs boson, H±, produced in top-quark decays, t → H±b, is presented. The search targets H± decays into a bottom and a charm quark, H± → cb. The analysis focuses on a selection enriched in top-quark pair production, where one top quark decays into a leptonically decaying W boson and a bottom quark, and the other top quark decays into a charged Higgs boson and a bottom quark. This topology leads to a lepton-plus-jets final state, characterised by an isolated electron or muon and at least four jets. The search exploits the high multiplicity of jets containing b-hadrons, and deploys a neural network classifier that uses the kinematic differences between the signal and the background. The search uses a dataset of proton-proton collisions collected at a centre-of-mass energy √ s = 13 TeV between 2015 and 2018 with the ATLAS detector at CERN’s Large Hadron Collider, amounting to an integrated luminosity of 139 fb−1. Observed (expected) 95% confidence-level upper limits between 0.15% (0.09%) and 0.42% (0.25%) are derived for the product of branching fractions B(t → H±b) × B(H± → cb) for charged Higgs boson masses between 60 and 160 GeV, assuming the SM production of the top-quark pairs. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/87864 |
DOI: | 10.1007/jhep09(2023)004 |
ISSN: | 1126-6708 |
e-ISSN: | 1029-8479 |
Versão da editora: | https://link.springer.com/article/10.1007/JHEP09(2023)004 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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JHEP09(2023)004.pdf | 1,8 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons