Constraint on the Higgs boson width in the diphoton final state using signal-background interference in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Year: 2026
Type: preprint
Abstract: The standard model Higgs boson, with a mass of 125 GeV, has a predicted decay width, $Γ_\mathrm{H}$, of 4.1 MeV. This Letter presents the first constraint on $Γ_\mathrm{H}$ obtained through the interference between the resonant H $\to$ $γγ$ process and the continuum $γγ$ production, both produced via gluon-gluon fusion. The analysis is performed using proton-proton collision data at $\sqrt{s}$ = 13 TeV, collected by the CMS experiment between 2016 and 2018, corresponding to an integrated luminosity of 138 fb$^{-1}$. The observed (expected) limit on the Higgs boson width is $Γ_\mathrm{H}$ $\lt$ 92 (138) MeV at 95% confidence level. This is the most stringent constraint on $Γ_\mathrm{H}$ from on-shell Higgs boson measurements to date.
Source: arXiv (Cornell University)
Author: CMS Collaboration
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Ministerio de Ciencia, Tecnología e Innovación, National Science Foundation, U.S. Department of Energy, CERN, Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu, Department of Science and Technology, Ministry of Science and Technology, India, Science Foundation Ireland, Deutsche Forschungsgemeinschaft, Fundação de Amparo à Pesquisa do Estado de São Paulo, National Natural Science Foundation of China, National Science Council, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Austrian Science Fund, Fonds De La Recherche Scientifique - FNRS, Fonds Wetenschappelijk Onderzoek, Ministerio de Economía y Competitividad, Bulgarian National Science Fund, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul, Secretaría de Educación Superior, Ciencia, Tecnología e Innovación, Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, Ministry of Education, India, 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, Benemérita Universidad Autónoma de Puebla, Pakistan Atomic Energy Commission, Ministry of Science,Technology and Research, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Ministry of Science and ICT, South Korea, Narodowa Agencja Wymiany Akademickiej, Ministry of Higher Education, Science, Research and Innovation, Thailand, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Agencia Estatal de Investigación, Institut National de Physique Nucléaire et de Physique des Particules
Awards: G196419191, G6649312515
OpenAlex ID: W7206204921