Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69396
Título: | Combination of searches for Higgs boson pairs in pp collisions at s=13TeV with the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Data: | 2020 |
Editora: | Elsevier 1 |
Revista: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Citação: | Aad, G., Abbott, B., Abbott, D. C., Abed Abud, A., Abeling, K., Abhayasinghe, D. K., . . . Zwalinski, L. (2020). Combination of searches for Higgs boson pairs in pp collisions at s=13TeV with the ATLAS detector. [Article]. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 800. doi: 10.1016/j.physletb.2019.135103 |
Resumo(s): | This letter presents a combination of searches for Higgs boson pair production using up to 36.1 fb(-1) of proton-proton collision data at a centre-of-mass energy root s = 13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the b (b) over barb (b) over bar, b (b) over barW(+)W(-), b (b) over bar tau(+)tau(-), W+W-W+W-, b (b) over bar gamma gamma and W+W-gamma gamma final states. Results are presented for non-resonant and resonant Higgs boson pair production modes. No statistically significant excess in data above the Standard Model predictions is found. The combined observed (expected) limit at 95% confidence level on the non-resonant Higgs boson pair production cross-section is 6.9 (10) times the predicted Standard Model cross-section. Limits are also set on the ratio (kappa(lambda)) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to -5.0 < kappa(lambda) < 12.0 (-5.8 < kappa(lambda) < 12.0). In addition, limits are set on the production of narrow scalar resonances and spin-2 Kaluza-Klein Randall-Sundrum gravitons. Exclusion regions are also provided in the parameter space of the habemus Minimal Supersymmetric Standard Model and the Electroweak Singlet Model. (C) 2019 The Author(s). Published by Elsevier B.V. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/69396 |
DOI: | 10.1016/j.physletb.2019.135103 |
ISSN: | 0370-2693 |
e-ISSN: | 1873-2445 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0370269319308251 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0370269319308251-main.pdf | 1,94 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons