Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates root s=13 TeV with the ATLAS detector

doi:10.1016/j.physletb.2022.137066

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/87731

Título:	Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates root s=13 TeV with the ATLAS detector
Autor(es):	Castro, Nuno Filipe Onofre, A. ATLAS Collaboration
Data:	2022
Editora:	Elsevier 1
Revista:	Physics Letters B
Citação:	Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Collaboration, A. (2022). Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates root s=13 TeV with the ATLAS detector. PHYSICS LETTERS B, 829. doi: 10.1016/j.physletb.2022.137066
Resumo(s):	A search for invisible decays of the Higgs boson as well as searches for dark matter candidates, produced together with a leptonically decaying Z boson, are presented. The analysis is performed using proton−proton collisions at a centre-of-mass energy of 13 TeV, delivered by the LHC, corresponding to an integrated luminosity of 139-1 and recorded by the ATLAS experiment. Assuming Standard Model cross-sections for ZH production, the observed (expected) upper limit on the branching ratio of the Higgs boson to invisible particles is found to be 19% (19%) at the 95% confidence level. Exclusion limits are also set for simplified dark matter models and two-Higgs-doublet models with an additional pseudoscalar mediator.
Tipo:	Artigo
URI:	https://hdl.handle.net/1822/87731
DOI:	10.1016/j.physletb.2022.137066
ISSN:	0370-2693
e-ISSN:	1873-2445
Versão da editora:	https://www.sciencedirect.com/science/article/pii/S0370269322002003
Arbitragem científica:	yes
Acesso:	Acesso aberto
Aparece nas coleções:	LIP - Artigos/papers