@misc{10481/77894,
year = {2022},
month = {9},
url = {https://hdl.handle.net/10481/77894},
abstract = {Searches are performed for nonresonant and resonant di-Higgs boson production in the b¯bγγ final state. The dataset used corresponds to an integrated luminosity of 139  fb−1 of proton–proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No excess above the expected background is found and upper limits on the di-Higgs boson production cross sections are set. A 95% confidence-level upper limit of 4.2 times the cross section predicted by the Standard Model is set on pp→HH nonresonant production, where the expected limit is 5.7 times the Standard Model predicted value. The expected constraints are obtained for a background hypothesis excluding pp→HH production. The observed (expected) constraints on the Higgs boson trilinear coupling modifier κλ are determined to be [−1.5,6.7] ([−2.4,7.7]) at 95% confidence level, where the expected constraints on κλ are obtained excluding pp→HH production from the background hypothesis. For resonant production of a new hypothetical scalar particle X (X→HH→b¯bγγ), limits on the cross section for pp→X→HH are presented in the narrow-width approximation as a function of mX in the range 251  GeV≤mX≤1000  GeV. The observed (expected) limits on the cross section for pp→X→HH range from 640 fb to 44 fb (391 fb to 46 fb) over the considered mass range.},
organization = {CEA-DRF},
organization = {Cantons of Bern and Geneva},
organization = {DNSRC	IN2P3-CNRS},
organization = {EU-ESF},
organization = {GIF, Israel},
organization = {GenT Programmes Generalitat Valenciana, Spain},
organization = {IRFU},
organization = {La Caixa Banking Foundation},
organization = {MES of Russia},
organization = {MIZŠ},
organization = {Norwegian Financial Mechanism	2014-2021},
organization = {PROMETEO},
organization = {RGC},
organization = {Wallenberg Foundation},
organization = {National Science Foundation},
organization = {U.S. Department of Energy},
organization = {Alexander von Humboldt-Stiftung},
organization = {Canarie},
organization = {H2020 Marie Skłodowska-Curie Actions},
organization = {Multiple Sclerosis Scientific Research Foundation},
organization = {CERN},
organization = {Compute Canada},
organization = {Göran Gustafssons Stiftelser},
organization = {Azərbaycan Milli Elmlər Akademiyası},
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 = {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 Sciences},
organization = {Austrian Science Fund},
organization = {Generalitat de Catalunya},
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 = {Joint Institute for Nuclear Research},
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 = {Ministry of Science and Technology, Taiwan},
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 = {Council on grants of the President of the Russian Federation},
organization = {National Research Center "Kurchatov Institute"},
organization = {Narodowa Agencja Wymiany Akademickiej},
organization = {Agencia Nacional de Investigación y Desarrollo},
organization = {Royal Society of South Australia},
publisher = {American Physical Society},
title = {Search for Higgs boson pair production in the two bottom quarks plus two photons final state in pp collisions at √s=13  TeV with the ATLAS detector},
doi = {10.1103/PhysRevD.106.052001},
author = {Aad, G. and Aguilar Saavedra, Juan Antonio and Rodríguez Chala, Mikael and Atlas Collaboration},
}