Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/31760
Título: | Search for a multi-Higgs-boson cascade in W+W−bb¯ events with the ATLAS detector in pp collisions at s√=8 TeV |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Data: | 2014 |
Editora: | American Physical Society |
Revista: | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Citação: | 27. Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Abdinov, O., . . . Collaboration, A. (2014). Search for a multi-Higgs-boson cascade in W(+)W(-)b(b)over-bar events with the ATLAS detector in pp collisions at root s=8 TeV. Physical Review D, 89(3). doi: 10.1103/PhysRevD.89.032002 |
Resumo(s): | A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H0), an intermediate charged Higgs-boson pair (H±), and a light Higgs boson (h0). The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom–antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom–antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3 fb−1, collected by the ATLAS detector in proton-proton collisions at s√=8 TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence-level upper limits are set on the product of cross section and branching ratio. These limits range from 0.065 to 43 pb as a function of H0 and H± masses, with mh0 fixed at 125 GeV. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/31760 |
DOI: | 10.1103/PhysRevD.89.032002 |
ISSN: | 1550-7998 |
e-ISSN: | 1550-2368 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1312.1956.pdf | 990,11 kB | Adobe PDF | Ver/Abrir |