Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/57549
Título: | Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Data: | 2018 |
Editora: | Elsevier B.V. |
Revista: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Citação: | Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., . . . Zwalinski, L. (2018). Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector. [Article]. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 784, 173-191. doi: 10.1016/j.physletb.2018.07.035 |
Resumo(s): | The observation of Higgs boson production in association with a top quark pair (), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated luminosities of up to 79.8 fb−1, and considering Higgs boson decays into , ⁎, , γγ, and ⁎, the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the searches using a dataset corresponding to integrated luminosities of 4.5 fb−1 at 7 TeV and 20.3 fb−1 at 8 TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total production cross section at 13 TeV is measured to be 670 ± 90 (stat.) (syst.) fb, in agreement with the Standard Model prediction. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/57549 |
DOI: | 10.1016/j.physletb.2018.07.035 |
ISSN: | 0370-2693 |
e-ISSN: | 1873-2445 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
1-s2.0-S0370269318305732-main.pdf | 1,43 MB | Adobe PDF | Ver/Abrir |