Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV

A search is performed for dark matter produced in association with bottom quarks and a pair of electrons or muons in data collected with the CMS detector at the LHC, corresponding to 138 fb$^{-1}$ of integrated luminosity of proton-proton collisions at a center-of-mass energy of 13 TeV. For the first time at the LHC, the associated production of a bottom quark-antiquark pair and a new heavy neutral Higgs boson (H) that subsequently decays into a leptonically decaying Z boson and a pseudoscalar (a) is explored. The latter acts as a dark matter mediator in the context of the two Higgs doublet model plus a pseudoscalar (2HDM+a). Multivariate techniques that target a wide range of mass configurations for the H and a particles are used. The observations are consistent with the expectations from standard model processes. Upper limits at 95% confidence level are set on the product of cross section and branching fraction of the new particles, ranging from 10$^{-2}$ pb for an H mass of 400 GeV to 10$^{-3}$ pb for an H mass of 2000 GeV. Constraints on the parameter space of a benchmark 2HDM+a model are derived and compared with expectations in the context of cosmological predictions.

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ArXiv.org
Published
2025-01-01
DOI
https://doi.org/10.3204/pubdb-2025-04641
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Particle physics theoretical and experimental studies
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article
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article

Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV

A. Santoro, T. Reis, M. Ferrero, M. A. Ciocci et al.
ArXiv.org
Particle physics theoretical and experimental studies
article

Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV

A. Santoro, T. Reis, M. Ferrero, M. A. Ciocci, S. Polikarpov, A. Vilela Pereira, A. Vagnerini, K. Rabbertz, U. Goerlach, V. Brigljević, M. M. A. Gadallah, J. Lidrych, Ryan Mccarthy, Andrew Hart, P. Azzurri, A. Gurrola, S. Dittmer, A. Nikitenko, B. Hacışahinoğlu, Chun-Hua Jiang, Shivam Raj, V. D’Amante, Lovisa Rygaard, S. Yang, James Natoli, Justin Anguiano, B. Blumenfeld, W. L. Aldá Júnior, P. Zehetner, K. Piotrzkowski, Aashay Arora, Magdy Louka, Sabrina Giorgetti, A. Lapertosa, G. Sorrentino, Chuyuan Liu, M. Horzela, Farouk Mokhtar, K. Shchelina, S. H. Kim, M. Presilla, A. Reimers, K. Lamichhane, Daniil Rastorguev, S. Mishra, Aurora Perego, Aman Rohilla, R. Klanner, A. Grohsjean, D. Contardo, A. Dierlamm, F. De Guio, E. Butz, C. Fangmeier, David Michael Morse, Ruben Gargiulo, Bobae Kim, F. Ivone, Niramay Gogate, S. My, Cesare Cazzaniga, Alpana Alpana, C. Roland, E. Asilar, P. K. Behera, K. T. S. Kallonen, D. Vats, Vincent J Smith, G. Maron, C. Madrid, Matteo Marchegiani, W. 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Bauerdick, Jose Monroy, G. S. F. Stephans, Zheng-Gang Chen, Paul Krueper
article en

Abstract

A search is performed for dark matter produced in association with bottom quarks and a pair of electrons or muons in data collected with the CMS detector at the LHC, corresponding to 138 fb$^{-1}$ of integrated luminosity of proton-proton collisions at a center-of-mass energy of 13 TeV. For the first time at the LHC, the associated production of a bottom quark-antiquark pair and a new heavy neutral Higgs boson (H) that subsequently decays into a leptonically decaying Z boson and a pseudoscalar (a) is explored. The latter acts as a dark matter mediator in the context of the two Higgs doublet model plus a pseudoscalar (2HDM+a). Multivariate techniques that target a wide range of mass configurations for the H and a particles are used. The observations are consistent with the expectations from standard model processes. Upper limits at 95% confidence level are set on the product of cross section and branching fraction of the new particles, ranging from 10$^{-2}$ pb for an H mass of 400 GeV to 10$^{-3}$ pb for an H mass of 2000 GeV. Constraints on the parameter space of a benchmark 2HDM+a model are derived and compared with expectations in the context of cosmological predictions.

ArXiv.org
Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Laboratoire d’Annecy de Physique des Particules (FR), Université de Haute-Alsace (FR), Deutsches Elektronen-Synchrotron DESY (DE), Institut Pluridisciplinaire Hubert Curien (FR), CEA Paris-Saclay (FR), Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules (FR), Institute of Nuclear Physics of Lyon (FR), Laboratoire Leprince-Ringuet (FR), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), Institut de Physique des 2 Infinis de Lyon (FR), RWTH Aachen University (DE)
National Science Foundation, U.S. Department of Energy, Alfred P. Sloan Foundation, Welch Foundation, Kavli Foundation, Alexander von Humboldt-Stiftung, Nvidia, Weston Havens Foundation, CERN, Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu, European Commission, 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, Ministerstvo Školství, Mládeže a Tělovýchovy, Fonds National de la Recherche Luxembourg, National Science Council, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Austrian Science Fund, Fonds De La Recherche Scientifique - FNRS, Fonds Wetenschappelijk Onderzoek, Consejo Nacional de Ciencia y Tecnología, Ministerio de Economía y Competitividad, Bulgarian National Science Fund, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Magyar Tudományos Akadémia, A.G. Leventis Foundation, 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, University of Science and Technology of China, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Hellenic Foundation for Research and Innovation, Ministry of Science and ICT, South Korea, Narodowa Agencja Wymiany Akademickiej, Ministry of Higher Education, Science, Research and Innovation, Thailand, 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
Openalex Percentile: Top 85%
Particle physics theoretical and experimental studies
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