| Texto completo | |
| Autor(es): |
Alves, Alexandre
;
Camargo, Daniel A.
;
Dias, Alex G.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 94, n. 1, p. 18-pg., 2016-07-22. |
| Resumo | |
Motivated by a solution to the strong CP problem, we propose a model where a new heavy neutral CP-even Higgs boson couples to vectorlike quarks enhancing its production cross section whose dominant decays are into weak bosons. The masses of the vectorlike quarks are generated through interactions with a singlet scalar field charged under a broken global U(1) symmetry, providing a solution to the strong CP problem by means of the Peccei-Quinn mechanism. The diboson excess observed by the ATLAS Collaboration is discussed as the new heavy Higgs boson is a candidate to explain a possible signal in this channel. We also show that the 14 TeV LHC is capable of discovering this heavy Higgs with masses up to 1 TeV in the H -> ZZ -> l(+)l(-)l'(+)l'(-) search channel using boosted decision trees to better discriminate between signals and backgrounds and to tame systematic uncertainties in the background rates. (AU) | |
| Processo FAPESP: | 13/22079-8 - Física de partículas e campos: modelo padrão e suas extensões |
| Beneficiário: | Adriano Antonio Natale |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |