Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into bbτ+τ− using pp collisions at √s=13 TeV with the ATLAS detector

This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, H aa, where one pseudoscalar decays into a b-quark pair and the other decays into a -lepton pair, in the mass range 12 m a 60 GeV.The analysis uses pp collision data at ffiffi ffi s p 13 TeV collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb -1 .No significant excess above the Standard Model (SM) prediction is observed.Assuming the SM Higgs boson production cross section, the search sets upper limits at 95% confidence level on the branching ratio of Higgs bosons decaying into b, between 2.2% and 3.9% depending on the pseudoscalar mass.

Publication Details

Journal
White Rose Research Online (University of Leeds, The University of Sheffield, University of York)
Published
2024-09-30
Primary Topic
Medical Imaging Techniques and Applications
Type
article
Field-Weighted Citation Impact
0.00

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article

Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into bbτ+τ− using pp collisions at √s=13 TeV with the ATLAS detector

White Rose Research Online (University of Leeds, The University of Sheffield, University of York)
Medical Imaging Techniques and Applications
article

Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into bbτ+τ− using pp collisions at √s=13 TeV with the ATLAS detector

article en

Abstract

This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, H aa, where one pseudoscalar decays into a b-quark pair and the other decays into a -lepton pair, in the mass range 12 m a 60 GeV.The analysis uses pp collision data at ffiffi ffi s p 13 TeV collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb -1 .No significant excess above the Standard Model (SM) prediction is observed.Assuming the SM Higgs boson production cross section, the search sets upper limits at 95% confidence level on the branching ratio of Higgs bosons decaying into b, between 2.2% and 3.9% depending on the pseudoscalar mass.

White Rose Research Online (University of Leeds, The University of Sheffield, University of York)
National Science Foundation, U.S. Department of Energy, Alexander von Humboldt-Stiftung, Canarie, Baden-Württemberg Stiftung, TRIUMF, CERN, Centres de Recerca de Catalunya, Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu, Leverhulme Trust, Royal Society, European Commission, 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, Grantová Agentura České Republiky, Bundesministerium für Bildung und Forschung, Austrian Science Fund, Generalitat de Catalunya, Ministry of Science and Technology of the People's Republic of China, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Generalitat Valenciana, Bundesministerium für Wissenschaft, Forschung und Wirtschaft, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Israel Science Foundation, Knut och Alice Wallenbergs Stiftelse, Max-Planck-Gesellschaft, Javna Agencija za Raziskovalno Dejavnost RS, Vetenskapsrådet, Ministerstwo Edukacji i Nauki, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Centre National de la Recherche Scientifique, Ministerio de Ciencia e Innovación, Norges Forskningsråd, Centre National pour la Recherche Scientifique et Technique, Forskningsrådet om Hälsa, Arbetsliv och Välfärd, Istituto Nazionale di Fisica Nucleare, Narodowa Agencja Wymiany Akademickiej, Agencia Nacional de Investigación y Desarrollo, Horizon 2020 Framework Programme, 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, British Columbia Knowledge Development Fund, European Regional Development Fund, Institut National de Physique Nucléaire et de Physique des Particules, European Social Fund, H2020 European Research Council, H2020 Marie Skłodowska-Curie Actions, CHIST-ERA
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Medical Imaging Techniques and Applications
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