Eur. Phys. J. C (2026) 86: 137
https://doi.org/10.1140/epjc/s10052-025-15176-9

Regular Article - Experimental Physics

Search for resonances decaying to an anomalous jet and a Higgs boson in proton–proton collisions at $\sqrt{s}=13\text{Te}\text{V}$

¹ Yerevan Physics Institute, Yerevan, Armenia
² Institut für Hochenergiephysik, Vienna, Austria
³ Universiteit Antwerpen, Antwerp, Belgium
⁴ Vrije Universiteit Brussel, Brussels, Belgium
⁵ Université Libre de Bruxelles, Brussels, Belgium
⁶ Ghent University, Ghent, Belgium
⁷ Université Catholique de Louvain, Louvain-la-Neuve, Belgium
⁸ Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
⁹ Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
¹⁰ Universidade Estadual Paulista, Universidade Federal do ABC, São Paulo, Brazil
¹¹ Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
¹² University of Sofia, Sofia, Bulgaria
¹³ Instituto De Alta Investigación, Universidad de Tarapacá, Casilla 7 D, Arica, Chile
¹⁴ Universidad Tecnica Federico Santa Maria, Valparaiso, Chile
¹⁵ Beihang University, Beijing, China
¹⁶ Department of Physics, Tsinghua University, Beijing, China
¹⁷ Institute of High Energy Physics, Beijing, China
¹⁸ State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
¹⁹ State Key Laboratory of Nuclear Physics and Technology, Institute of Quantum Matter, South China Normal University, Guangzhou, China
²⁰ Sun Yat-Sen University, Guangzhou, China
²¹ University of Science and Technology of China, Hefei, China
²² Nanjing Normal University, Nanjing, China
²³ Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Fudan University, Shanghai, China
²⁴ Zhejiang University, Hangzhou, Zhejiang, China
²⁵ Universidad de Los Andes, Bogotá, Colombia
²⁶ Universidad de Antioquia, Medellín, Colombia
²⁷ Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Split, Croatia
²⁸ Faculty of Science, University of Split, Split, Croatia
²⁹ Institute Rudjer Boskovic, Zagreb, Croatia
³⁰ University of Cyprus, Nicosia, Cyprus
³¹ Charles University, Prague, Czech Republic
³² Escuela Politecnica Nacional, Quito, Ecuador
³³ Universidad San Francisco de Quito, Quito, Ecuador
³⁴ Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt
³⁵ Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt
³⁶ National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
³⁷ Department of Physics, University of Helsinki, Helsinki, Finland
³⁸ Helsinki Institute of Physics, Helsinki, Finland
³⁹ Lappeenranta-Lahti University of Technology, Lappeenranta, Finland
⁴⁰ IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
⁴¹ Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
⁴² Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
⁴³ Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules, CNRS/IN2P3, Villeurbanne, France
⁴⁴ Institut de Physique des 2 Infinis de Lyon (IP2I), Villeurbanne, France
⁴⁵ Georgian Technical University, Tbilisi, Georgia
⁴⁶ I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany
⁴⁷ III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
⁴⁸ III. Physikalisches Institut B, RWTH Aachen University, Aachen, Germany
⁴⁹ Deutsches Elektronen-Synchrotron, Hamburg, Germany
⁵⁰ University of Hamburg, Hamburg, Germany
⁵¹ Karlsruher Institut für Technologie, Karlsruhe, Germany
⁵² Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece
⁵³ National and Kapodistrian University of Athens, Athens, Greece
⁵⁴ National Technical University of Athens, Athens, Greece
⁵⁵ University of Ioánnina, Ioannina, Greece
⁵⁶ HUN-REN Wigner Research Centre for Physics, Budapest, Hungary
⁵⁷ MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary
⁵⁸ Faculty of Informatics, University of Debrecen, Debrecen, Hungary
⁵⁹ HUN-REN ATOMKI-Institute of Nuclear Research, Debrecen, Hungary
⁶⁰ Karoly Robert Campus, MATE Institute of Technology, Gyongyos, Hungary
⁶¹ Panjab University, Chandigarh, India
⁶² University of Delhi, Delhi, India
⁶³ University of Hyderabad, Hyderabad, India
⁶⁴ Indian Institute of Technology Kanpur, Kanpur, India
⁶⁵ Saha Institute of Nuclear Physics, HBNI, Kolkata, India
⁶⁶ Indian Institute of Technology Madras, Madras, India
⁶⁷ IISER Mohali, Mohali, India
⁶⁸ Tata Institute of Fundamental Research-A, Mumbai, India
⁶⁹ Tata Institute of Fundamental Research-B, Mumbai, India
⁷⁰ National Institute of Science Education and Research, An OCC of Homi Bhabha National Institute, Bhubaneswar, Odisha, India
⁷¹ Indian Institute of Science Education and Research (IISER), Pune, India
⁷² Indian Institute of Technology Hyderabad, Hyderabad, Telangana, India
⁷³ Isfahan University of Technology, Isfahan, Iran
⁷⁴ Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
⁷⁵ University College Dublin, Dublin, Ireland
⁷⁶ INFN Sezione di Bari, Università di Bari, Politecnico di Bari, Bari, Italy
⁷⁷ INFN Sezione di Bologna, Università di Bologna, Bologna, Italy
⁷⁸ INFN Sezione di Catania, Università di Catania, Catania, Italy
⁷⁹ INFN Sezione di Firenze, Università di Firenze, Florence, Italy
⁸⁰ INFN Laboratori Nazionali di Frascati, Frascati, Italy
⁸¹ INFN Sezione di Genova, Università di Genova, Genoa, Italy
⁸² INFN Sezione di Milano-Bicocca, Università di Milano-Bicocca, Milan, Italy
⁸³ INFN Sezione di Napoli, Università di Napoli ‘Federico II’, Naples, Italy; Università della Basilicata, Potenza, Italy, Scuola Superiore Meridionale (SSM), Naples, Italy
⁸⁴ INFN Sezione di Padova, Università di Padova, Padua, Italy, Universita degli Studi di Cagliari, Cagliari, Italy
⁸⁵ INFN Sezione di Pavia, Università di Pavia, Pavia, Italy
⁸⁶ INFN Sezione di Perugia, Università di Perugia, Perugia, Italy
⁸⁷ INFN Sezione di Pisa, Università di Pisa, Scuola Normale Superiore di Pisa, Pisa, Italy, Università di Siena, Siena, Italy
⁸⁸ INFN Sezione di Roma, Sapienza Università di Roma, Rome, Italy
⁸⁹ INFN Sezione di Torino, Università di Torino, Turin, Italy, Università del Piemonte Orientale, Novara, Italy
⁹⁰ INFN Sezione di Trieste, Università di Trieste, Trieste, Italy
⁹¹ Kyungpook National University, Daegu, Korea
⁹² Department of Mathematics and Physics-GWNU, Gangneung, Korea
⁹³ Institute for Universe and Elementary Particles, Chonnam National University, Kwangju, Korea
⁹⁴ Hanyang University, Seoul, Korea
⁹⁵ Korea University, Seoul, Korea
⁹⁶ Department of Physics, Kyung Hee University, Seoul, Korea
⁹⁷ Sejong University, Seoul, Korea
⁹⁸ Seoul National University, Seoul, Korea
⁹⁹ University of Seoul, Seoul, Korea
¹⁰⁰ Department of Physics, Yonsei University, Seoul, Korea
¹⁰¹ Sungkyunkwan University, Suwon, Korea
¹⁰² College of Engineering and Technology, American University of the Middle East (AUM), Dasman, Kuwait
¹⁰³ Department of Physics, College of Science, Kuwait University, Safat, Kuwait
¹⁰⁴ Riga Technical University, Riga, Latvia
¹⁰⁵ University of Latvia (LU), Riga, Latvia
¹⁰⁶ Vilnius University, Vilnius, Lithuania
¹⁰⁷ National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
¹⁰⁸ Universidad de Sonora (UNISON), Hermosillo, Mexico
¹⁰⁹ Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
¹¹⁰ Universidad Iberoamericana, Mexico City, Mexico
¹¹¹ Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
¹¹² University of Montenegro, Podgorica, Montenegro
¹¹³ University of Canterbury, Christchurch, New Zealand
¹¹⁴ National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
¹¹⁵ AGH University of Krakow, Kraków, Poland
¹¹⁶ National Centre for Nuclear Research, Swierk, Poland
¹¹⁷ Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
¹¹⁸ Warsaw University of Technology, Warsaw, Poland
¹¹⁹ Laboratório de Instrumentação e Física Experimental de Partículas, Lisbon, Portugal
¹²⁰ Faculty of Physics, University of Belgrade, Belgrade, Serbia
¹²¹ VINCA Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
¹²² Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
¹²³ Universidad Autónoma de Madrid, Madrid, Spain
¹²⁴ Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Universidad de Oviedo, Oviedo, Spain
¹²⁵ Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
¹²⁶ University of Colombo, Colombo, Sri Lanka
¹²⁷ Department of Physics, University of Ruhuna, Matara, Sri Lanka
¹²⁸ CERN, European Organization for Nuclear Research, Geneva, Switzerland
¹²⁹ PSI Center for Neutron and Muon Sciences, Villigen, Switzerland
¹³⁰ ETH Zurich-Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
¹³¹ Universität Zürich, Zurich, Switzerland
¹³² National Central University, Chung-Li, Taiwan
¹³³ National Taiwan University (NTU), Taipei, Taiwan
¹³⁴ High Energy Physics Research Unit, Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
¹³⁵ Tunis El Manar University, Tunis, Tunisia
¹³⁶ Physics Department, Science and Art Faculty, Çukurova University, Adana, Turkey
¹³⁷ Physics Department, Middle East Technical University, Ankara, Turkey
¹³⁸ Bogazici University, Istanbul, Turkey
¹³⁹ Istanbul Technical University, Istanbul, Turkey
¹⁴⁰ Istanbul University, Istanbul, Turkey
¹⁴¹ Yildiz Technical University, Istanbul, Turkey
¹⁴² Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkiv, Ukraine
¹⁴³ National Science Centre, Kharkiv Institute of Physics and Technology, Kharkiv, Ukraine
¹⁴⁴ University of Bristol, Bristol, UK
¹⁴⁵ Rutherford Appleton Laboratory, Didcot, UK
¹⁴⁶ Imperial College, London, UK
¹⁴⁷ Brunel University, Uxbridge, UK
¹⁴⁸ Baylor University, Waco, TX, USA
¹⁴⁹ Bethel University, St. Paul, MN, USA
¹⁵⁰ Catholic University of America, Washington, DC, USA
¹⁵¹ The University of Alabama, Tuscaloosa, AL, USA
¹⁵² Boston University, Boston, MA, USA
¹⁵³ Brown University, Providence, RI, USA
¹⁵⁴ University of California, Davis, Davis, CA, USA
¹⁵⁵ University of California, Los Angeles, CA, USA
¹⁵⁶ University of California, Riverside, Riverside, CA, USA
¹⁵⁷ University of California, San Diego, La Jolla, California, USA
¹⁵⁸ Department of Physics, University of California, Santa Barbara, Santa Barbara, CA, USA
¹⁵⁹ California Institute of Technology, Pasadena, CA, USA
¹⁶⁰ Carnegie Mellon University, Pittsburgh, PA, USA
¹⁶¹ University of Colorado Boulder, Boulder, CO, USA
¹⁶² Cornell University, Ithaca, NY, USA
¹⁶³ Fermi National Accelerator Laboratory, Batavia, IL, USA
¹⁶⁴ University of Florida, Gainesville, FL, USA
¹⁶⁵ Florida State University, Tallahassee, FL, USA
¹⁶⁶ Florida Institute of Technology, Melbourne, FL, USA
¹⁶⁷ University of Illinois Chicago, Chicago, IL, USA
¹⁶⁸ The University of Iowa, Iowa City, IA, USA
¹⁶⁹ Johns Hopkins University, Baltimore, MD, USA
¹⁷⁰ The University of Kansas, Lawrence, KS, USA
¹⁷¹ Kansas State University, Manhattan, KS, USA
¹⁷² University of Maryland, College Park, MD, USA
¹⁷³ Massachusetts Institute of Technology, Cambridge, MA, USA
¹⁷⁴ University of Minnesota, Minneapolis, MN, USA
¹⁷⁵ University of Nebraska-Lincoln, Lincoln, NE, USA
¹⁷⁶ State University of New York at Buffalo, Buffalo, NY, USA
¹⁷⁷ Northeastern University, Boston, MA, USA
¹⁷⁸ Northwestern University, Evanston, IL, USA
¹⁷⁹ University of Notre Dame, Notre Dame, IN, USA
¹⁸⁰ The Ohio State University, Columbus, OH, USA
¹⁸¹ Princeton University, Princeton, NJ, USA
¹⁸² University of Puerto Rico, Mayagüez, PR, USA
¹⁸³ Purdue University, West Lafayette, IN, USA
¹⁸⁴ Purdue University Northwest, Hammond, IN, USA
¹⁸⁵ Rice University, Houston, TX, USA
¹⁸⁶ University of Rochester, Rochester, NY, USA
¹⁸⁷ Rutgers, The State University of New Jersey, Piscataway, NJ, USA
¹⁸⁸ University of Tennessee, Knoxville, TN, USA
¹⁸⁹ Texas A&M University, College Station, TX, USA
¹⁹⁰ Texas Tech University, Lubbock, TX, USA
¹⁹¹ Vanderbilt University, Nashville, TN, USA
¹⁹² University of Virginia, Charlottesville, VA, USA
¹⁹³ Wayne State University, Detroit, MI, USA
¹⁹⁴ University of Wisconsin-Madison, Madison, WI, USA
¹⁹⁵ Authors Affiliated with an International Laboratory Covered by a Cooperation Agreement with CERN, Geneva, Switzerland
¹⁹⁶ Authors Affiliated with an Institute Formerly Covered by a Cooperation Agreement with CERN, Geneva, Switzerland
¹⁹⁷ Yerevan State University, Yerevan, Armenia
¹⁹⁸ TU Wien, Vienna, Austria
¹⁹⁹ Ghent University, Ghent, Belgium
²⁰⁰ Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
²⁰¹ FACAMP-Faculdades de Campinas, São Paulo, Brazil
²⁰² Universidade Estadual de Campinas, Campinas, Brazil
²⁰³ Federal University of Rio Grande do Sul, Porto Alegre, Brazil
²⁰⁴ The University of the State of Amazonas, Manaus, Brazil
²⁰⁵ University of Chinese Academy of Sciences, Beijing, China
²⁰⁶ China Center of Advanced Science and Technology, Beijing, China
²⁰⁷ University of Chinese Academy of Sciences, Beijing, China
²⁰⁸ School of Physics, Zhengzhou University, Zhengzhou, China
²⁰⁹ Henan Normal University, Xinxiang, China
²¹⁰ University of Shanghai for Science and Technology, Shanghai, China
²¹¹ The University of Iowa, Iowa City, IA, USA
²¹² Center for High Energy Physics, Peking University, Beijing, China
²¹³ Helwan University, Cairo, Egypt
²¹⁴ Zewail City of Science and Technology, Zewail, Egypt
²¹⁵ British University in Egypt, Cairo, Egypt
²¹⁶ Purdue University, West Lafayette, IN, USA
²¹⁷ Université de Haute Alsace, Mulhouse, France
²¹⁸ Ilia State University, Tbilisi, Georgia
²¹⁹ an Institute Formerly Covered by a Cooperation Agreement with CERN, Geneva, Switzerland
²²⁰ University of Hamburg, Hamburg, Germany
²²¹ III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
²²² Bergische University Wuppertal (BUW), Wuppertal, Germany
²²³ Brandenburg University of Technology, Cottbus, Germany
²²⁴ Forschungszentrum Jülich, Jülich, Germany
²²⁵ CERN, European Organization for Nuclear Research, Geneva, Switzerland
²²⁶ HUN-REN ATOMKI-Institute of Nuclear Research, Debrecen, Hungary
²²⁷ Universitatea Babes-Bolyai-Facultatea de Fizica, Cluj-Napoca, Romania
²²⁸ MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary
²²⁹ HUN-REN Wigner Research Centre for Physics, Budapest, Hungary
²³⁰ Physics Department, Faculty of Science, Assiut University, Asyût, Egypt
²³¹ The University of Kansas, Lawrence, KS, USA
²³² Punjab Agricultural University, Ludhiana, India
²³³ University of Hyderabad, Hyderabad, India
²³⁴ Indian Institute of Science (IISc), Bangalore, India
²³⁵ University of Visva-Bharati, Santiniketan, India
²³⁶ IIT Bhubaneswar, Bhubaneswar, India
²³⁷ Institute of Physics, Bhubaneswar, India
²³⁸ Deutsches Elektronen-Synchrotron, Hamburg, Germany
²³⁹ Isfahan University of Technology, Isfahan, Iran
²⁴⁰ Sharif University of Technology, Tehran, Iran
²⁴¹ Department of Physics, University of Science and Technology of Mazandaran, Behshahr, Iran
²⁴² Department of Physics, Faculty of Science, Arak University, Arak, Iran
²⁴³ Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna, Italy
²⁴⁴ Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy
²⁴⁵ Università degli Studi Guglielmo Marconi, Rome, Italy
²⁴⁶ Scuola Superiore Meridionale, Università di Napoli ‘Federico II’, Naples, Italy
²⁴⁷ Fermi National Accelerator Laboratory, Batavia, IL, USA
²⁴⁸ Lulea University of Technology, Luleå, Sweden
²⁴⁹ Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali, Perugia, Italy
²⁵⁰ UPES-University of Petroleum and Energy Studies, Dehra Dun, India
²⁵¹ Institut de Physique des 2 Infinis de Lyon (IP2I ), Villeurbanne, France
²⁵² Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
²⁵³ Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka
²⁵⁴ Saegis Campus, Nugegoda, Sri Lanka
²⁵⁵ National and Kapodistrian University of Athens, Athens, Greece
²⁵⁶ Ecole Polytechnique Fédérale Lausanne, Lausanne, Switzerland
²⁵⁷ Universität Zürich, Zurich, Switzerland
²⁵⁸ Stefan Meyer Institute for Subatomic Physics, Vienna, Austria
²⁵⁹ Research Center of Experimental Health Science, Near East University, Mersin, Turkey
²⁶⁰ Konya Technical University, Konya, Turkey
²⁶¹ Izmir Bakircay University, Izmir, Turkey
²⁶² Adiyaman University, Adiyaman, Turkey
²⁶³ Bozok Universitetesi Rektörlügü, Yozgat, Turkey
²⁶⁴ Istanbul Sabahattin Zaim University, Istanbul, Turkey
²⁶⁵ Marmara University, Istanbul, Turkey
²⁶⁶ Milli Savunma University, Istanbul, Turkey
²⁶⁷ Informatics and Information Security Research Center, Gebze/Kocaeli, Turkey
²⁶⁸ Kafkas University, Kars, Turkey
²⁶⁹ Istanbul Okan University, Istanbul, Turkey
²⁷⁰ Hacettepe University, Ankara, Turkey
²⁷¹ Erzincan Binali Yildirim University, Erzincan, Turkey
²⁷² Faculty of Engineering, Istanbul University-Cerrahpasa, Istanbul, Turkey
²⁷³ Yildiz Technical University, Istanbul, Turkey
²⁷⁴ Istinye University, Istanbul, Turkey
²⁷⁵ School of Physics and Astronomy, University of Southampton, Southampton, UK
²⁷⁶ Faculty of Science, Monash University, Clayton, Australia
²⁷⁷ Bethel University, St. Paul, MN, USA
²⁷⁸ Università di Torino, Turin, Italy
²⁷⁹ Karamanoğlu Mehmetbey University, Karaman, Turkey
²⁸⁰ California Lutheran University, Thousand Oaks, CA, USA
²⁸¹ California Institute of Technology, Pasadena, CA, USA
²⁸² United States Naval Academy, Annapolis, MD, USA
²⁸³ Bingol University, Bingol, Turkey
²⁸⁴ Georgian Technical University, Tbilisi, Georgia
²⁸⁵ Sinop University, Sinop, Turkey
²⁸⁶ Erciyes University, Kayseri, Turkey
²⁸⁷ Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania
²⁸⁸ Another Institute Formerly Covered by a Cooperation Agreement with CERN, Geneva, Switzerland
²⁸⁹ Hamad Bin Khalifa University (HBKU), Doha, Qatar
²⁹⁰ Another Institute Formerly Covered by a Cooperation Agreement with CERN, Geneva, Switzerland
²⁹¹ Yerevan Physics Institute, Yerevan, Armenia
²⁹² Imperial College, London, UK
²⁹³ Institute of Nuclear Physics of the Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
²⁹⁴ CERN, Geneva, Switzerland

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Received: 16 September 2025
Accepted: 5 December 2025
Published online: 10 February 2026

Abstract

This paper presents a search for new physics through the process where a massive particle, X, decays into a Higgs boson and a second particle, Y. The Higgs boson subsequently decays into a bottom quark–antiquark pair, which is reconstructed as a single large-radius jet. The decay products of Yare also assumed to produce a single large-radius jet. The identification of the Yparticle is enhanced by computing the anomaly score of its candidate jet using an autoencoder, which measures deviations from typical quark- or gluon-induced jets. This allows a simultaneous search for multiple Ydecay scenarios within a single analysis. In the main benchmark process, Yis a scalar particle that decays into a Wboson pair. Two other scalar Ydecay processes are also considered as benchmarks: decays to a light quark–antiquark pair, and decays to a top quark–antiquark pair. A fourth benchmark process considers Yas a hadronically decaying top quark, arising from the decay of a vector-like quark into a top quark and a Higgs boson. Data recorded by the CMS experiment at a center-of-mass energy of 13$\text{Te}\text{V}$ in 2016–2018, corresponding to an integrated luminosity of 138${\text{fb}}^{-1}$, are analyzed. The search covers Xmasses between 1.4 and 3.0$\text{Te}\text{V}$ and Ymasses between 90 and 400$\text{Ge}\text{V}$, with all simulated signals produced in the narrow-width approximation. No significant excess above the standard model background expectation is observed. The most stringent upper limits to date are placed on benchmark signal cross sections for various masses of X and Y particles