@misc{10481/85500,
year = {2023},
month = {10},
url = {https://hdl.handle.net/10481/85500},
abstract = {This Letter reports on a search for off-shell production of the Higgs boson using 139 fb−1of ppcollision data at √s=13TeV collected by the ATLAS detector at the Large Hadron Collider. The signature is a pair of Zbosons, with contributions from both the production and subsequent decay of a virtual Higgs boson and the interference of that process with other processes. The two observable final states are ZZ→4 and ZZ→2 2νwith   =eor μ. In the ZZ→4 final state, a dense Neural Network is used to enhance analysis sensitivity with respect to matrix element-based discrimination. The background-only hypothesis is rejected with an observed (expected) significance of 3.3 (2.2) standard deviations, representing experimental evidence for off-shell Higgs boson production. Assuming that no new particles enter the production of the virtual Higgs boson, its total width can be deduced from the measurement of its off-shell production cross-section. The measured total width of the Higgs boson is 4.5+3.3−2.5MeV, and the observed (expected) upper limit on the total width is found to be 10.5 (10.9)MeV at 95% confidence level.},
organization = {BSF-NSF},
organization = {CEA-DRF},
organization = {Canton of Bern and Geneva},
organization = {DNSRC},
organization = {EU-ESF},
organization = {GenT Programmes Generalitat Valenciana, Spain},
organization = {GridKA},
organization = {INFN-CNAF},
organization = {La Caixa Banking Foundation},
organization = {MIZŠ},
organization = {MNE},
organization = {NDGF

CC-IN2P3},
organization = {Norwegian Financial Mechanism

2014-2021},
organization = {PROMETEO},
organization = {RGC},
organization = {UNCE

SCI/013},
organization = {Wallenberg Foundation},
organization = {U.S. Department of Energy},
organization = {Alexander von Humboldt-Stiftung},
organization = {Alabama Space Grant Consortium},
organization = {Brookhaven National Laboratory},
organization = {CRC Health Group

	21/SCI/017	CRC},
organization = {Canarie},
organization = {Karlsruhe Institute of Technology},
organization = {H2020 Marie Skłodowska-Curie Actions},
organization = {Multiple Sclerosis Scientific Research Foundation},
organization = {CERN},
organization = {Compute Canada},
organization = {Göran Gustafssons Stiftelser},
organization = {Natural Sciences and Engineering Research Council of Canada},
organization = {National Research Council Canada},
organization = {Canada Foundation for Innovation},
organization = {Science and Technology Facilities Council},
organization = {Leverhulme Trust},
organization = {European Research Council},
organization = {European Cooperation in Science and Technology},
organization = {Australian Research Council},
organization = {National Stroke Foundation},
organization = {Neurosurgical Research Foundation},
organization = {Helmholtz-Gemeinschaft},
organization = {Minerva Foundation},
organization = {Deutsche Forschungsgemeinschaft},
organization = {Agence Nationale de la Recherche},
organization = {Japan Society for the Promotion of Science},
organization = {Ministry of Education, Culture, Sports, Science and Technology},
organization = {Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung},
organization = {Danmarks Grundforskningsfond},
organization = {Fundação de Amparo à Pesquisa do Estado de São Paulo},
organization = {National Natural Science Foundation of China},
organization = {Ministerstvo Školství, Mládeže a Tělovýchovy},
organization = {Fundação para a Ciência e a Tecnologia},
organization = {Bundesministerium für Bildung und Forschung},
organization = {Chinese Academy of Science},
organization = {Austrian Science Fund},
organization = {Generalitat de Catalunya},
organization = {Ministry of Science and Technology of the People's Republic of China},
organization = {Agencia Nacional de Promoción Científica y Tecnológica},
organization = {Nederlandse Organisatie voor Wetenschappelijk Onderzoek},
organization = {Bundesministerium für Wissenschaft, Forschung und Wirtschaft},
organization = {Conselho Nacional de Desenvolvimento Científico e Tecnológico},
organization = {Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science},
organization = {Israel Science Foundation},
organization = {Instituto Nazionale di Fisica Nucleare},
organization = {Narodowe Centrum Nauki},
organization = {Javna Agencija za Raziskovalno Dejavnost RS},
organization = {Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja},
organization = {Ministerio de Ciencia e Innovación},
organization = {Centre National pour la Recherche Scientifique et Technique},
organization = {Staatssekretariat für Bildung, Forschung und Innovation},
organization = {Horizon 2020},
organization = {British Columbia Knowledge Development Fund},
organization = {European Regional Development Fund},
organization = {Defence Science Institute},
organization = {Narodowa Agencja Wymiany Akademickiej},
organization = {Institutul de Fizică Atomică},
organization = {Agencia Nacional de Investigación y Desarrollo},
organization = {Royal Society of South Australia},
publisher = {Elsevier},
title = {Evidence of off-shell Higgs boson production from ZZleptonic decay channels and constraints on its total width with the ATLAS detector},
doi = {10.1016/j.physletb.2023.138223},
author = {Atlas Collaboration},
}