Combination of searches for nonresonant Higgs boson pair production in proton–proton collisions at s = 13 TeV
Year: 2026
Type: article
Abstract: This paper presents a combination of searches for the nonresonant production of Higgs boson pairs (HH) in proton–proton collisions at a centre-of-mass energy of 13 TeV. The dataset was collected by the CMS experiment at the LHC from 2016 to 2018 and corresponds to a total integrated luminosity of 138 fb − 1 . The observed (expected) upper limit on the inclusive HH production cross-section relative to the standard model (SM) prediction is found to be 3.5 (2.5). Assuming all other Higgs boson couplings are equal to their SM values, the Higgs boson trilinear self-coupling modifier κ λ = λ 3 / λ 3 SM is constrained in the range − 1.35 ⩽ κ λ ⩽ 6.37 at 95% confidence level (CL). Similarly, for the coupling modifier κ 2 V , which governs the interactions between two vector bosons and two Higgs bosons, we have excluded κ 2 V = 0 at more than five standard deviations for all values of κ λ . At 95% CL, assuming that the other couplings are equal to their SM values, κ 2 V is constrained in the range 0.64 ⩽ κ 2 V ⩽ 1.40 . This work also investigates HH production in several new physics scenarios, using the Higgs effective field theory (HEFT) framework. The HEFT framework is further exploited to study various ultraviolet complete models with an extended Higgs sector and set constraints on specific parameters. An extrapolation of the results in the expected integrated luminosity following the high-luminosity upgrade of the LHC is also reported.
Author: The CMS Collaboration
Institution: European Organization for Nuclear Research
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,325
Funders: Helsinki Institute of Physics, Ministerio de Ciencia, Tecnología e Innovación, National Science Foundation, U.S. Department of Energy, Alfred P. Sloan Foundation, Welch Foundation, Alexander von Humboldt-Stiftung, Nvidia, National Research Centre, Türkiye Atom Enerjisi Kurumu, Weston Havens Foundation, CERN, Kanton Zürich, Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu, European Commission, Department of Science and Technology, Ministry of Science and Technology, India, Council of Scientific and Industrial Research, India, Department of Atomic Energy, Government of India, Science Foundation Ireland, Deutsche Forschungsgemeinschaft, Fundação de Amparo à Pesquisa do Estado de São Paulo, National Natural Science Foundation of China, Ministerstvo Školství, Mládeže a Tělovýchovy, Eesti Teadusagentuur, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Academy of Finland, Bundesministerium für Bildung und Forschung, Chinese Academy of Sciences, Austrian Science Fund, Fonds De La Recherche Scientifique - FNRS, Eidgenössische Technische Hochschule Zürich, Fonds Wetenschappelijk Onderzoek, Ministerio de Economía y Competitividad, Bulgarian National Science Fund, General Secretariat for Research and Technology, Ministry of Business, Innovation and Employment, Conselho Nacional de Desenvolvimento Científico e Tecnológico, National Research Foundation of Korea, Joint Institute for Nuclear Research, Magyar Tudományos Akadémia, A.G. Leventis Foundation, National Science and Technology Development Agency, Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul, Secretaría de Educación Superior, Ciencia, Tecnología e Innovación, Universiti Malaya, Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, Narodowym Centrum Nauki, Hrvatska Zaklada za Znanost, Lietuvos Mokslo Taryba, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, National Academy of Sciences of Ukraine, Centre National de la Recherche Scientifique, Shota Rustaveli National Science Foundation, Universidad Autónoma de San Luis Potosí, Latvijas Zinātnes Padome, Benemérita Universidad Autónoma de Puebla, Pakistan Atomic Energy Commission, Ministry of Science,Technology and Research, University of Science and Technology of China, Beijing Municipal Science and Technology Commission, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Istituto Nazionale di Fisica Nucleare, Hellenic Foundation for Research and Innovation, Bundesministerium für Bildung, Wissenschaft und Forschung, Ministry of Science and ICT, South Korea, Narodowa Agencja Wymiany Akademickiej, Ministry of Higher Education, Science, Research and Innovation, Thailand, Research and Innovation Foundation, Board of the Swiss Federal Institutes of Technology, Qatar National Research Fund, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia, Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture, European Regional Development Fund, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Agencia Estatal de Investigación, Fundamental Research Funds for the Central Universities, Institut National de Physique Nucléaire et de Physique des Particules, H2020 European Research Council, NextGenerationEU
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OpenAlex ID: W7170292481