Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 fb.sup.−1./sup. of proton-proton data recorded by the ATLAS experiment

0562027 - FZÚ 2023 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2862 authors
Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 fb⁻¹ of proton-proton data recorded by the ATLAS experiment.
Journal of High Energy Physics. Roč. 2022, č. 8 (2022), č. článku 104. ISSN 1029-8479. E-ISSN 1029-8479
Research Infrastructure: e-INFRA CZ - 90140; CERN-CZ II - 90104
Institutional support: RVO:68378271
Keywords : Hadron-Hadron Scattering * Higgs Physics * Vector Boson Production
OECD category: Particles and field physics
Impact factor: 5.4, year: 2022
Method of publishing: Open access

A direct search for Higgs bosons produced via vector-boson fusion and subsequently decaying into invisible particles is reported. The analysis uses 139 fb−1−1 of pp collision data at a centre-of-mass energy of ss ​ = 13 TeV recorded by the ATLAS detector at the LHC. The observed numbers of events are found to be in agreement with the background expectation from Standard Model processes. For a scalar Higgs boson with a mass of 125 GeV and a Standard Model production cross section, an observed upper limit of 0.145 is placed on the branching fraction of its decay into invisible particles at 95% confidence level, with an expected limit of 0.103. These results are interpreted in the context of models where the Higgs boson acts as a portal to dark matter, and limits are set on the scattering cross section of weakly interacting massive particles and nucleons.
Permanent Link: https://hdl.handle.net/11104/0336292