Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69340
Título: | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Palavras-chave: | Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
Data: | 2020 |
Editora: | Springer |
Revista: | Journal of High Energy Physics |
Citação: | Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., . . . Collaboration, A. (2020). Search for t(t)over-bar resonances in fully hadronic final states in pp collisions at root s=13 TeV with the ATLAS detector. Journal of High Energy Physics(10). doi: 10.1007/jhep10(2020)061 |
Resumo(s): | This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/69340 |
DOI: | 10.1007/jhep10(2020)061 |
ISSN: | 1126-6708 |
e-ISSN: | 1029-8479 |
Versão da editora: | https://link.springer.com/article/10.1007%2FJHEP10%282020%29061 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Aad2020_Article_SearchForTtTOverlineTResonance.pdf | 1,74 MB | Adobe PDF | Ver/Abrir |