Measurement of the properties of Higgs boson production at $\sqrt{s}$ = 13 TeV in the <em>H → γγ</em> channel using 139 fb<sup>-1</sup> of <em>pp</em> collision data with the ATLAS experiment

Measurements of Higgs boson production cross-sections are carried out in the diphoton decay channel using 139 fb<sup>-1</sup> of pp collision data at $\sqrt{s}$ = 13 TeV collected by the ATLAS experiment at the LHC. The analysis is based on the definition of 101 distinct signal regions using machine-learning techniques. The inclusive Higgs boson signal strength in the diphoton channel is measured to be $1.04^{+0.10}_{-0.09}$. Cross-sections for gluon-gluon fusion, vector-boson fusion, associated production with a W or Z boson, and top associated production processes are reported. An upper limit of 10 times the Standard Model prediction is set for the associated production process of a Higgs boson with a single top quark, which has a unique sensitivity to the sign of the top quark Yukawa coupling. Higgs boson production is further characterized through measurements of Simplified Template Cross-Sections (STXS). In total, cross-sections of 28 STXS regions are measured. The measured STXS cross-sections are compatible with their Standard Model predictions, with a p-value of 93%. The measurements are also used to set constraints on Higgs boson coupling strengths, as well as on new interactions beyond the Standard Model in an effective field theory approach. No significant deviations from the Standard Model predictions are observed in these measurements, which provide significant sensitivity improvements compared to the previous ATLAS results.

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OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
Published
2024-12-10
DOI
https://doi.org/10.1007/jhep07%282023%29088
Citations
19
Primary Topic
Particle physics theoretical and experimental studies
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article

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article

Measurement of the properties of Higgs boson production at $\sqrt{s}$ = 13 TeV in the H → γγ channel using 139 fb-1 of pp collision data with the ATLAS experiment

G. Aad
19 citations
OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
Particle physics theoretical and experimental studies
article

Measurement of the properties of Higgs boson production at $\sqrt{s}$ = 13 TeV in the H → γγ channel using 139 fb-1 of pp collision data with the ATLAS experiment

G. Aad
article en
19 citations

Abstract

Measurements of Higgs boson production cross-sections are carried out in the diphoton decay channel using 139 fb<sup>-1</sup> of pp collision data at $\sqrt{s}$ = 13 TeV collected by the ATLAS experiment at the LHC. The analysis is based on the definition of 101 distinct signal regions using machine-learning techniques. The inclusive Higgs boson signal strength in the diphoton channel is measured to be $1.04^{+0.10}_{-0.09}$. Cross-sections for gluon-gluon fusion, vector-boson fusion, associated production with a W or Z boson, and top associated production processes are reported. An upper limit of 10 times the Standard Model prediction is set for the associated production process of a Higgs boson with a single top quark, which has a unique sensitivity to the sign of the top quark Yukawa coupling. Higgs boson production is further characterized through measurements of Simplified Template Cross-Sections (STXS). In total, cross-sections of 28 STXS regions are measured. The measured STXS cross-sections are compatible with their Standard Model predictions, with a p-value of 93%. The measurements are also used to set constraints on Higgs boson coupling strengths, as well as on new interactions beyond the Standard Model in an effective field theory approach. No significant deviations from the Standard Model predictions are observed in these measurements, which provide significant sensitivity improvements compared to the previous ATLAS results.

OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
Centre National de la Recherche Scientifique (FR), Aix-Marseille Université (FR)
National Science Foundation, U.S. Department of Energy, Alexander von Humboldt-Stiftung, University of Pennsylvania, Ohio State University, Northern Illinois University, Oklahoma State University, Univerzita Karlova v Praze, Aix-Marseille Université, České Vysoké Učení Technické v Praze, Michigan State University, University of Washington, University of Pittsburgh, University of Oklahoma, Canarie, McGill University, Universidad Técnica Federico Santa María, Queen Mary University of London, University of Oregon, New York University Abu Dhabi, TRIUMF, CERN, Compute Canada, Centres de Recerca de Catalunya, Institut "Jožef Stefan", Universität Siegen, Louisiana Tech University, Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu, York University, Leverhulme Trust, Royal Society, University College London, University of Oxford, European Commission, University of Sussex, Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche, Ministry of Education, Culture, Sports, Science and Technology, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Danmarks Grundforskningsfond, Fundação de Amparo à Pesquisa do Estado de São Paulo, National Natural Science Foundation of China, Ministerstvo Školství, Mládeže a Tělovýchovy, Universiteit van Amsterdam, Radboud Universiteit, Academia Sinica, Bundesministerium für Bildung und Forschung, Austrian Science Fund, Generalitat de Catalunya, Consejo Nacional de Investigaciones Científicas y Técnicas, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Lunds Universitet, Generalitat Valenciana, Bundesministerium für Wissenschaft, Forschung und Wirtschaft, University of Toronto, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidad Nacional de La Plata, Israel Science Foundation, Max-Planck-Gesellschaft, Akademie Věd České Republiky, Kungliga Tekniska Högskolan, Simon Fraser University, Javna Agencija za Raziskovalno Dejavnost RS, Tel Aviv University, Universidad Autónoma de Madrid, Centre National de la Recherche Scientifique, Ministerio de Ciencia e Innovación, Universitetet i Oslo, Universidade de São Paulo, Ludwig-Maximilians-Universität München, Universidade de Coimbra, Universidade de Lisboa, United Arab Emirates University, Technion-Israel Institute of Technology, Centre National pour la Recherche Scientifique et Technique, Universidad de Granada, Aristotle University of Thessaloniki, University of Tsukuba, High Energy Accelerator Research Organization, Universidade do Estado do Rio de Janeiro, Univerzita Palackého v Olomouci, Université Paris-Saclay, Universidad de Tarapacá, Univerza v Ljubljani, Akademia Górniczo-Hutnicza im. Stanislawa Staszica, Universidade Federal do Rio de Janeiro, Universidade do Minho, Pontificia Universidad Católica de Chile, Narodowa Agencja Wymiany Akademickiej, Sorbonne Université, Agencia Nacional de Investigación y Desarrollo, Stony Brook University, University of Illinois at Urbana-Champaign, College of Engineering, Michigan State University, University of California, Irvine, Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council, Japan Society for the Promotion of Science, Fundação para a Ciência e a Tecnologia, Agencia Nacional de Promoción Científica y Tecnológica, Department of Physics and Astronomy, University College London, Instituto Superior Técnico, British Columbia Knowledge Development Fund, European Regional Development Fund, Institut National de Physique Nucléaire et de Physique des Particules, Royal Holloway, University of London, Division of Physics, High Energy Physics, Nuclear Physics, European Social Fund, H2020 Marie Skłodowska-Curie Actions, SLAC National Accelerator Laboratory
Particle physics theoretical and experimental studies
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