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

Aad, G.; Aguilar Saavedra, Juan Antonio; Rodríguez Chala, Mikael; Atlas Collaboration

doi:10.1016/j.physletb.2022.137066

1-s2.0-S0370269322002003-main.pdf (2.022Mo)

Identificadores

URI: http://hdl.handle.net/10481/75008

DOI: 10.1016/j.physletb.2022.137066

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Editorial

Elsevier

Date

2022-04-04

Referencia bibliográfica

Aad, G... [et al.]. Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates at s=13 TeV with the ATLAS detector, Physics Letters B, Volume 829, 2022, 137066, ISSN 0370-2693, [https://doi.org/10.1016/j.physletb.2022.137066]

Patrocinador

ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; ANID, Chile; CAS, MOST and NSFC, China; Min-ciencias, Colombia; MEYS CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Geor-gia; BMBF, HGF and MPG, Germany; GSRI, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; JINR; MES of Russia and NRC KI, Russian Federation; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DSI/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Canton of Bernand Canton of Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America; BCKDF, Canarie, Compute Canada and CRC, Canada; COST, ERC, ERDF, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex, In-vestissements d’Avenir Idex and ANR, France; DFG and AvH Foun-dation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Pro-gramme Generalitat de Catalunya and PROMETEO and GenT Pro-grammes Generalitat Valenciana, Spain; Göran Gustafssons Stif-telse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom

Résumé

A search for invisible decays of the Higgs boson as well as searches for dark matter candidates, produced together with a leptonically decaying Zboson, are presented. The analysis is performed using proton−proton collisions at a centre-of-mass energy of 13TeV, delivered by the LHC, corresponding to an integrated luminosity of 139fb−1and recorded by the ATLAS experiment. Assuming Standard Model cross-sections for ZHproduction, 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.

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