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

ATLAS Collaboration ; García Pascual, Juan Antonio (Universidad de Zaragoza)

Resumen: 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 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.

Idioma: Inglés

DOI: 10.1016/j.physletb.2022.137066

Año: 2022

Publicado en: Physics Letters B 829 (2022), 137066 [25 pp.]
ISSN: 0370-2693

Factor impacto JCR: 4.3 (2022)

Categ. JCR: PHYSICS, NUCLEAR rank: 3 / 19 = 0.158 (2022) - Q1 - T1
Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 9 / 29 = 0.31 (2022) - Q2 - T1
Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 18 / 69 = 0.261 (2022) - Q2 - T1

Factor impacto CITESCORE: 9.8 - Physics and Astronomy (Q1)

Factor impacto SCIMAGO: 1.704 - Nuclear and High Energy Physics (Q1)

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)